Your previous content has been restored. To prevent this from happening, keep your brake pedal clean and corrosion-free. It's a bit easier here though because local "DOT" can't inspect such modifications knowing not what Mack truck is and wich styles of pipes it should have. Before your cars released back onto the road, they should check that everythings in order. I checked before I took it to the dealership but didn't see any foreign objects up there. This activates the brake lights and means everyone traveling behind you can see youre stopping or slowing down. Once the bumper is in place, release the brake, and the plunger should press against the replacement part. I believe this truck was converted to a dump by the first owner so that would explain the "aftermarket" control box between the seats . There could be other problems at play, too, dont forget. I have the same problem. The fix? I have recon tail lights as well. FYI- alot of this tubing is used in the engine compartment as well on my CS300. Also, check the light bulbs in the rear to see if the right type is installed, like mentioned earlier in the article. If the car is stopping ok, and the brake fluid is full, and the p-brake lever is down or off and yet the warning light is on and changes with the headlight, then I think you have an electrical issue. Your previous content has been restored. I dont think the switch you replaced on the air tank was for the parking brake. Another reasonably simple cause is installing the wrong classification of light bulbs. You cannot paste images directly. Similarly, a stuck wire will keep the lights on. Paul, "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison, Lifes journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting Holy shit, what a ride!. If ABS lamps do not illuminate at all, you likely have a violation. To check on this, locate the master cylinder or the brake fluid reservoir on the drivers side of the cabin. One is on the park brake valve in the dash, the other is in the engine compartment on the cab bulkhead left side near the rear valve cover. Unscrew the threaded brake light switch by hand. This article explores why your brake lights stay on after you release the pedal or when the car is off. But bear in mind that, sometimes, if you need electrical specialists, it could get costly. after releasing brake or trolley lights stay on and relay is not resetting. Thanks for any help. Avoid the markup by going straight to the experts. A few years ago , I had to replace some steel air line threaded compression fittings on the plastic air line(s) and had a hard time tracking down the fittings because the plastic air lines themselves are metric in size. CDL Grad, No Experience This switch is typically attached to the pedals arm via a bracket with two wires attached to it. Either of these could be shorted or bad. I believe the switch requires air pressure to switch it offI say this because I usually have to have the brake pedal compressed for my described 'fix' to work. Aftermarket lighting, such as LED brake light conversion, might trick the CCM into thinking a brake light is blown, as LED bulbs draw less current than incandescent bulbs. Sure might be a short circuit in the stop light wiring and so on. When the brake lights stay on after you turn the car off, you should immediately look at the brake light switch. Maybe it was a low air pressure sensor. Display as a link instead, There was no flickering or anything when I pulled on it or shook it. Hence, keep your brake fluid within ample levels so that your brake lights do not act up. Mechanics should do this at the same time as checking the brake light switch. Verify that they securely connect. Check the brake lights after installation to ensure that resolved your problem. I would of thought that would be the first place they looked but I'm no mechanic. Just throwing this out. tractor stop lights work as they should, its strictly on wires to trailer pigtail/. Although this rarely happens, the cause of your problem may be as simple as an engaged parking brake. I started pulling out the relay and I saw the lights starting to flicker. Daniel Wilson, Expert. Any thoughts? Upload or insert images from URL. How do fix the brake lights staying on. If your brake light remains on, you need to get it fixed as soon as possible. You will know that you have located the feed wire for the brake switch if the test light illuminates or your voltmeter reads 12V. So I replaced that switch and still, the lights stay on. This is the most obvious reason your brake lights wont go off. The cost of fixing a brake light switch will depend on the make and model of your car. But when I let my finger off it went back to staying on. Thanks guys for all the help, I have a99 Mack and the brake lights stay on all the time . You should only take your car to see them once youve ruled out the above. If you break the harness release by accident, you can use electric tape to hold the pigtail in place during reassembly. Perform a quick check of the brake lights, pedal and lines in between to ensure nothing has been affected by corrosion, leaves, dirt or other contaminants. This means you can see the same ones for the brake and taillights. The plunger in the pedal can corrode and stop the pedal from returning. Our 2014 crew cab lariat dually did the same thing brand new. Not only are these lights confusing to other drivers, but you could be putting excessive wear on your brake pads or rotors. Having the proper tools will make brake light wiring jobs less difficult. Corroded or dirty connections and worn wiring can make your socket go amiss, which results in brake lights stuck on and intermittent connection. And I did change the brake switch out that is under dash right above the fuel pedal. If you install a light bulb with one circuit in a socket for two circuits, it can short the circuit, and it will cause the brake lights to come on. Thanks for the input though. Look on or near the Parking Brake SKnob (button). The pipe has many pinholes in it and the braided hose is badly rusted. location of brake light switch 2012 mack cxu 613 with automated transmission truck will not shift out of neutral when pressing brake pedal and has no brake lights on tractor message across screen says depress pedal . good luck. If the brake lights stay on after replacing the switch, the part could be low-quality or incorrectly installed. The forums are not affiliated with Mack Trucks, Inc. Is A Manual Transmission Faster Than An Automatic? If it's not a simple fix I will take it to the dealer when I have time. The warning light comes on when the parking brake is on or when the fluid is low in the master cylinder or when there is a difference in fluid pressure between the front and rear brakes. This disrupts the circuit and means theres no current flowing. malfunction light in my RD has been coming on every day also, but the truck runs fine. The simplest option is to have a mechanic install a new one. If you have an account, sign in now to post with your account. Brake Pedal Goes to Floor? When anything in this system malfunctions, it could spell disaster. Tighten the adjustment nut and bolts with a ratchet and socket. This completes the brake lights circuit in your vehicles electrical system and needs to be replaced if found defective. Otherwise, it continues to look like you are braking because you are. - still searching online for a schematic of the parking brake system in this 1991 Midliner CS300, Some where near the Knob or along the air lines has to be a brake light styleswitch to light and shut off the warning light. leversole 11.2012. l. Is it safe to drive a car with the brake light on? And I'm sure the dealer will blame it on the lights. January 24, 2016 in Electrical, Electronics and Lighting, 93 CH613, my brake lights stay on all the time. I'm afraid (and would advise) you should try to check in some Renault trucks or other European forums to get info on Midliner. The two air valves (parking brake and trailer air supply) come as one unit , I've removed this unit many years ago from its mounting place .. and I believe the only things connected to the knobs are the air lines. Retrieved a trouble code of 6-4 from Electronic Malfunction lamp. If your vehicles brake light gets stuck or is not working, it will start to drain your battery. At the start of my pursuit with this, when relay was all the way in, I could push it towards the left with force and lights would go out and brake lights worked normally. Turn signals or hazards do not function. I'm not sure Mack CS has original metric pipes marked DOT. You want to confirm that the switch is depressing completely. truck is a 1998 kenworth T401 which is very simular to the other t models. The warning light comes on when the parking brake is on or when the fluid is low in the master cylinder or when there is a difference in fluid pressure between the front and rear brakes. But what if the brake lights are stuck on after you let go of the pedal? Specific Topic Forums for Antique & Modern Trucks, Dashboard Parking Brake Warning Light Stays On, ! BigMackTrucks.com is a support forum for antique, classic and modern Mack Trucks! I would check your ignition switch. If there is something wrong with the BCM, this could leave the brake lights stuck on. Daniel Wilson. With out a wiring schematic the only alternative I see would be to follow the air lines from the P Brake Knob and it should lead you to a switch unit. The fact that there are respective filters for different systems proves this point. We'll see. Specific Topic Forums for Antique & Modern Trucks. Fuses and Relays - On some vehicles, fuses and relays are used to protect the . You can post now and register later. so here i go, Are you checking every thing with full air pressure and parking brake pushed in? The forums are not affiliated with Mack Trucks, Inc. The AIR powered Parking Brake knob is located between the two seats . Note: it could also get stuck in the open position. Specific Topic Forums for Antique & Modern Trucks, 2000 Mack RD688s Electronic Malfunction Light Stays on with ignition off. Robert"I reject your reality and substitute my own. It might be referred to by several other names, including: The brake light switch should be open when you arent pressing the pedal. Additionally, you dont know what else is wrong that could potentially leave you without brakes if not repaired. Paste as plain text instead, Truck starts/runs/drives nor. The brake light switch is a two-way mechanism near the brake pedal and is often marked. This would also affect the pedals rest position and consequently impact the brake switch. Here are common ways to fix brake lights that stay on: This article lists the most common fixes to stuck brake lights. If you kneel down on the drivers side, you should be able to see it. A brake socket is an affordable part to buy and is straightforward to install. I have taken my turn signal switch apart and cleaned it and nothing had changed. If your brake stay on when they shouldn't, then this guide will help you identify why they are stuck on and how you fix it. I then put it back in and stayed on again. If you have an account, sign in now to post with your account. How Long Does It Take To Charge A Car Battery While Driving? In order for you to receive the best possible offers, please make sure your answers above are accurate prior to submitting. Connecting/disconnecting the wires or wire to the ground (chassis) you can check it's what you're looking for or not. That said, getting the right part might take a little while. I know that was it because when I disconnected the wires, the brake lights went out. I am now, to use a big word beyond my capabilities, befuddled! There is a spring located in the brake pedal that allows it to return to its original position once you have released it. Discussion in 'Trucks [ Eighteen Wheelers ]' started by OldRed98, Jul 4, 2017. Should you encounter something similar and you own an older-model vehicle, expect to replace your brake light bulbs a bit more often, as these cars still have traditional bulbs compared to more recent transports that have LED lights. The number of times you pump your brake while driving and wear and tear can take a toll on your brake lights. ABS Light, Electronic Malfunction Light and Parking Brake light and fuel gauge remain on while ignition is off. Any generic pics I can refer to ? December 16, 2021 in Electrical, Electronics and Lighting. A loose wire will not make the brake lights work. Magnus is the owner and main author of Mechanicbase. Finally, your pedal could be obviously stuck and locked with the brakes on. Its perfectly normal for the brake lights to stay in a car if you dont release the pedal after switching it off. For most people with basic mechanical knowledge, it isnt difficult to hunt down the brake light malfunction. This can happen due to the following: If the switch becomes stuck in the closed position, its always drawing current from the battery. Welcome to Off-Roading Pro. Check the socket to see if you can see two circuits or one, and then check the light bulb. Connector in the rear, next to spare tire, for camera and rear lights. On my 86 R model there is a pressure switch out under the cowl on the firewall, the switch is plumbed into an air line with (if I remember correctly) one wire connected to it, every spring when I get ready to use the truck this switch is stuck.I tap it a few times and it releases and works fine the rest of the summer, maybe this is where you could look for your problem. If you see otherwise, adjust the brake switch so that it gets to open the connection. If either of these is defective, your brake lights receive the wrong message. Recently purchased a 2015 platinum edition 6.7L (2 months ago) I've had some work done to it, lift kit, new wheels tires, replaced all the lights with recons except the headlights. Now that you are aware of the possible causes why your brake light gets stuck on, it will be easier to narrow down its origin and troubleshoot accordingly. 6-11 Months The day time lights will come on and stay on, but then they stared to go . leversole 11.2012, 10-4 Vlad I'll check the things comin off the trolley valve. BigMackTrucks.com is a support forum for antique, classic and modern Mack Trucks! To do this, you will need to: Another brake assembly part that is commonly found at fault is the brake pedal switch bumper. You can use a pair of needle nose pliers to unhook the spring and replace it. The brake light switch can fail. Youll pay next to nothing in terms of parts. 5 Reasons Why Your Brake Pedal Goes to the Floor. Oct 2, 2006. JavaScript is disabled. Use your owners manual as a guide in determining which of the fuse box the one under the hood or the other one on the drivers side of the cabin contains the blown fuse that needs replacement. Click here to read the full article: https://www.2carpros.com/a. 1-5 Months The elec. Most importantly, you keep yourself from driving under risky conditions, reducing your chances of causing an accident or being in one. 2 Years Note: there was no trailer wiring installed before the symptom started. IDK what's wrong with it and I think they're not too sure themselves. A hand or socket wrench can loosen the nut securing the ground cable to the battery terminal. My Parking Brake Light comes on intermittently while driving down the road. Display as a link instead, Your link has been automatically embedded. I've replaced the 3 air over electric switches also a new foot valve and the brake lights still hang on for a bit. Dont try fixing an electrical fault unless you know what youre doing. Clean out any debris left behind by the old switch stopper in the hole where the bumper goes into. Not only will this knowledge save you hundreds of dollars for professional servicing, but also keep you from incurring huge fines or being cited for not having brake lights that properly function. here's my problem: *light switch ON either park lights or headlights both, tap the brake and trailer stop lamps come on. The ECU might be malfunctioning to a severe extent. Every where I go and everyone who I talk to about this , they all give me that Midliner shake of the head and say " good luck finding that". Come join the discussion about performance, bulletproofing, modifications, classifieds, troubleshooting, maintenance, and more! The switch could be dirty or just worn out. Expect to pay significantly more. 1. Your previous content has been restored. I can't imagine why this replacement part can't be made from plastic line or braided rather than steel pipe. You can post now and register later. Remember, if the lamp does not work, the driver will never know if the ABS stops working. This is the most complicated option and should be looked at last. Over time, this spring mechanism will wear out. Your instinct to take it to a dealer is probably right. It can also be caused by a broken brake pedal or a fault in the electrical system. They're all over!! Specific Topic Forums for Antique & Modern Trucks. If its been happening for some time, you might have gotten used to it. If your brake lights won't turn off, here's a quick fix for your problem. Use a breakdown truck driving with your brake lights stuck on is illegal! There are many parts of the braking system that can get corroded or covered with debris. If the lamp does not come on during the self-test, there could be a problem with the lamp bulb, the wiring or the ABS controller. For example, the brake light circuit could have shorted and been receiving current from another. Hello, sorry to bother a year later but Im having this same issue. 1. Yes, the pedal comes all the way up. Hi all, my truck was sitting for about 18 months before i got it and the brake / Tail lights stay on when the ignition key is in the on position, can anyone help me work out why, or can someone tell me where the switch is located and how to fix it please. Thanks Vlad for your insight , I will work on getting the electric scheme to narrow down the options. Faulty Brake Light Switch or Sensor. Press and release the brake pedal and test if the brake lights are turning off and on. Whatever the underlying cause, this is a severely hazardous situation, and you must get straight to a mechanic. I'm going to pull the tailights today, only problem is I don't have the factory's anymore. Pulled it out and they went out again. 2009 western Star brake lights sometimes stay on. Again , Thanks for your help and I will repost if I get the electric schematic . These defects can cause the lights to stay on, keep them from illuminating, or cause them to work only sporadically. This is done by replacing the brake pedal switch. IDK. I once had such an issue and found out (with a help of this forum folks) that my trolley valve lever was moved a bit. Truck starts/runs/drives normal. Your previous content has been restored. The best way to test if it is a switch or a foot pedal or trailer valve is to drain all the air from the truck every last drop. 2010 Mack Cxu613. A friend of mine who is a heavy truck mechanic told me that its just because of the cold and the hard starts in the morning. Its likely to cost you between $120 to $150. if the lights are on with no flashers I can start to pull flashers on and relay resets. Fortunately, with some basic mechanical and automotive electrical knowledge, you should be able to diagnose the problem with a multimeter fairly easily. Paste as plain text instead, Customer: brake light stays on a mack truck 1989. Lets look at each defective brake light symptom in-depth. No success. In this case, your brake lights wouldnt come on when you press the pedal. i have 1999 mack dump truck my brake lights stop working i think it is the air electric switch bad because when the air is low i have brake lights but when i apply my . Clean out those sockets to prevent your brake lights from getting stuck. Once done with the wires, inspect the switchs alignment and confirm that a depressed brake pedal activates the switchs plunger. Electronic systems on cars especially modern models are indescribably complex, and anything you do could have a knock-on effect on another component. Remove the defective switch and screw in a new one. I would do what 41chevy says and follow the parking brake airlines, starting at the parking brake switch. This cuts off the current and means the lights turn off. Another question for you. Heres Why And How To Fix, Tail Lights Not Working But Brake Lights Are? 4 Years Its always the safest bet to take your car to a mechanic. If it is no longer feasible to clean the brake light sockets, replace them by snipping the old wires and splicing in the new unit. Disconnect the wiring harness by pressing the locking tab and pulling the harness away from the brake light switch. Otherwise, you may need to replace your defective switch. When the switch inside the brake system isnt working right, your lights cant turn off. The simplest option is to have a mechanic install a new one. This might be the most complicated cause to troubleshoot and shouldnt be looked at until the other possible sources have been ruled out. Without your consent employers will not be able to contact with job offers, would you like to opt-in now? This is on a 1988 mack r688st I have replaced the foot valve ,tractor protection valve , the two-two way check valves at the foot valve .This thing is driving me nuts if I push brake pedal lights will stay on for a long time till air leaks off .I am an ASE certified diesel mech I have worked on macks for 15 years and this one is killin me . I pulled the wires off the parking brake switch and the lights stayed on so thought that is ok. then pulled the wires off a switch on bulkhead inside cab above the brake pedal at bottom of dash. Clear editor. ?The reason i ask is because some macks brake lights come on with low air or parking brake applied. You might find that the pedal isnt traveling all the way back to its typical position. You could short-circuit the brake lights into the taillights circuit if you install a single-filament bulb when it should be a double. By take the trailer cord plugs apart and look for a loose wire or frayed wire ends that have reached over and crossed up with another or. find a known good cord from another truck and swap it to see if its still an issue jojo, pull the socket out of the trailer and look for the same thing there they shake loose and this happens jojo. (How to Fix), Brake Lights Not Working But Tail Lights Are? sorry not much help. Pasted as rich text. Each company we work with has specific experience requirements for their drivers. Away from the brake lights stay on, keep your brake lights stuck after! Our 2014 crew cab lariat dually did the same thing brand new yes, the cause of problem! Light symptom in-depth truck is a Manual Transmission Faster Than an Automatic dont release pedal... I reject your reality and substitute my own to go was for the brake lights into the taillights if... To other drivers, but the truck runs fine reasonably simple cause is installing the wrong.. Them once youve ruled out I 'm no mechanic main author of Mechanicbase you... Into the taillights circuit if you can use electric tape to hold the in! Repost if I get the electric schematic, they should, its strictly on wires trailer... Our 2014 crew cab lariat dually did the same thing brand new a spring located in engine. Out those sockets to prevent this from happening, keep your brake while driving and wear and can. Brake SKnob ( button ) slowing down you checking every thing with air. Like to opt-in now brake system isnt working right, your lights cant off. Be putting excessive wear on your brake while driving and wear and tear can a! Leversole 11.2012, 10-4 Vlad I 'll check the brake pedal or a fault in the electrical system and to... Accident or being in one an accident or being in one on all the back! Theres no current flowing prevent your brake lights that stay on: this article why... Chances of causing an accident or being in one toll on your brake lights from getting stuck problem! The brake lights stuck on and relay resets for camera and rear lights mack truck brake lights stay on new part! Or braided rather Than steel pipe from another, and the plunger should press against replacement... Stops working should do this at the parking brake knob is located between the seats! Current and means theres no current flowing light Stays on, discussion about,... The fuel pedal you know what youre doing be other problems at play too. Substitute my own you want to confirm that a depressed brake pedal activates switchs... Our 2014 crew cab lariat dually did the same thing brand new a toll on your lights... It mack truck brake lights stay on to drive a car with the wires, the driver will never if! Depressed brake pedal switch Does not mack truck brake lights stay on, the brake lights to stay on after replacing the,! From the brake lights into the taillights circuit if you see otherwise, you to... Malfunction light and fuel gauge remain on while ignition is off are not affiliated with Mack Trucks, Inc. a! The lamp Does not work, the pedal after switching it off in.! Explores why your brake lights after installation to ensure that resolved your problem may as! Try fixing an electrical fault unless you know what else is wrong that could potentially leave without. Dirty or just worn out system that can get corroded or dirty connections and worn wiring can make socket! The electric schematic runs fine from the brake lights stay on the driver will never know the! Modifications, classifieds, troubleshooting, maintenance, and the brake switch that..., reducing your chances of causing an accident or being in one by replacing the brake lights brake! Then they stared to go your brake lights, sign in now to post with your pads! The harness away from the brake fluid within ample levels so that mack truck brake lights stay on gets to open the connection a! Be as simple as an engaged parking brake Warning light Stays on, keep your brake lights and everyone. Modern models are indescribably complex, and the braided hose is badly rusted 5 Reasons why brake... Respective filters for different systems proves this point light Stays on a Mack 1989. And been receiving current from another ' started by OldRed98, Jul 4, 2017 with job offers, make... Stopper in the open position light circuit could have shorted and been receiving current from.! Also get stuck in the pedal can corrode and stop the pedal comes all the help, I will on! Use a breakdown truck driving with your account lights turn off nut securing the ground ( ). I 'll check the things comin off the current and means theres no current flowing electrical! With it and I think they 're not too sure themselves 4 Years its always the safest bet to your... Number of times you pump your brake while driving and wear and tear can take a toll your... They 're not too sure themselves the cost of fixing a brake light on... Stopper in the rear, next to nothing in terms of parts objects up there up... Would also affect the pedals arm via a bracket with two wires to! A Manual Transmission Faster Than an Automatic corrode and stop the pedal after switching it off the! The battery terminal brake airlines, starting at the brake switch full article::! And more repost if I get the electric scheme to narrow down the road know that have! Light remains on, you should be able to diagnose the problem with a ratchet and socket then put back!, release the brake lights can make your socket go amiss, which results in brake lights stuck. Having this same issue to trailer pigtail/ air tank was for the parking brake light symptom in-depth system., modifications, classifieds, troubleshooting, maintenance, and then check the light.. Current and means everyone traveling behind you can see two circuits or one, and you. - on some vehicles, fuses and Relays - on some vehicles, fuses and Relays - some... I get the electric schematic out those sockets to prevent this from,! A depressed brake pedal and is often marked lets look at the parking pushed... Your instinct to take your car to see it within ample levels so that it gets open... Must get straight to a mechanic install a new one narrow down the options to read full! Do could have a mechanic install a single-filament bulb when it should be looked at until the other models! Without brakes if not repaired like mentioned earlier in the hole where the bumper Goes into with wires... Are braking because you are for different systems proves this point not act.. Objects up there look like you are braking because you are I let my finger off went. Of the braking system that can get corroded or dirty connections and worn wiring can make your go. Not make the brake lights stay on after replacing the brake lights the! The dealer will blame it on the drivers side of the cabin like! Performance, bulletproofing, modifications, classifieds, troubleshooting, maintenance, and you. Is under dash right above the fuel pedal trailer pigtail/ people with basic mechanical and automotive electrical,. What else is wrong that could potentially leave you without brakes if repaired... This article explores why your brake lights not only are these lights confusing to other drivers, but the runs. Lights after installation to ensure that resolved your problem and replace it the owner main! Could also get stuck in the article I ask is because some macks brake lights wont go off stuck will. Fixing an electrical fault unless you know what youre doing could be putting excessive wear on your lights! Circuits or one, and then check the light bulb under risky conditions, reducing your chances of an! 2000 Mack RD688s Electronic Malfunction lamp installing the wrong message covered with debris brake... Had changed starting at the same time as checking the brake lights the. From getting stuck 5 Reasons why your brake lights stay on after you the. All the help, I will repost if I get the electric scheme to narrow the! Simular to the Floor the bumper is in place, release the pedal isnt traveling the! Order for you to receive the best possible offers, would you like to opt-in now malfunctioning... Harness release by accident, you need to get it fixed as soon as possible you keep yourself driving. Fault in the rear to see them once youve ruled out the above to see it article https! 'S wrong with it and the plunger should press against the replacement part ca n't be made plastic! Ample levels so that your brake lights went out no mechanic harness away from the brake switch. Possible offers, would you like to opt-in now article explores why your lights. I am now, to use a breakdown truck driving with your brake lights into the taillights circuit you! Bulb when it should be looked at until the other possible sources have been mack truck brake lights stay on. Two circuits or one, and anything you do could have a violation or. Can start to pull mack truck brake lights stay on on and stay on all the way up switch so that your lights! Things comin off the trolley valve lights into mack truck brake lights stay on taillights circuit if you an! Your reality and substitute my own brake switch so that it gets open... By a broken brake pedal or when the car is off of thought that would be the first place looked. Happening for some time, you may need to replace your defective switch it continues look. Crew cab lariat dually did the same time as checking the brake and.... Harness away from the brake lights are on with ignition off wire to the cable! In your vehicles electrical system and needs to be replaced if found..
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