In my case (to my big surprize) the trolley valve lever on the steering column was moved a bit from its off position and that initiated brake lights for all the time. Also check for built up dirt under the pedal that is keeping it slightly depressed. This is the most obvious reason your brake lights wont go off. I dont think the switch you replaced on the air tank was for the parking brake. You could also endanger yourself. A yellow colored lamp, marked with the letters ABS, is located on the instrument panel of trucks, buses and truck tractors (dash-mounted), and located on the exterior of trailers, near the red side marker lamp on the left rear side (trailer-mounted). He aims to help drivers worldwide with common automotive problems. So I will check the two switches. The BCM or Body Control Module connects to the wiring circuit (brake light switch) and onto the rear brake lamps for newer vehicles. 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. Hope that helps if any one else has this issue.. Tested all and grounds seemed good and hots seemed ok. Either of these could be shorted or bad. More than likely the foot pedal, they have steel pistons in an aluminum housing. I was thinking of using ALL steel braided hose, Ive found a manufacturer online that deals in that type hose, but I need to get the correct fitting information which is metric. However, if your cleaning does not fix the problem, then perhaps professional servicing and upkeep will. Youll pay next to nothing in terms of parts. The number of times you pump your brake while driving and wear and tear can take a toll on your brake lights. 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. I thought it was the black wire that goes to one of the terminals on the relay, but after pulling it out, putting test light on it and looking at it, nothing seemed wrong with that or the other ones. If you kneel down on the drivers side, you should be able to see it. Heres Why And How To Fix, Tail Lights Not Working But Brake Lights Are? Clifford the big red dog Always install the right light bulbs! Simple. Amazon Affiliate Link to Brake Light Switch: https://amzn.to/2VWDBVvPlease click my name under the video to view all my easy how-to videos. First, it is not clear if you mean the red brake warning light on the instrument cluster, or the vehicle's stop lights at the back of the car. They say that the the only dumb question is the one that is not asked! Youll find all the information you need in your owners manual. Welcome to Off-Roading Pro. jeffl1107 A forum community dedicated to Ford F-series owners and enthusiasts with a Power Stroke diesel engine. You can use a pair of needle nose pliers to unhook the spring and replace it. I replaced the brake light switch and now have no brake lights and cant take it . 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. 2015 0. (14 Reasons Why)Continue, Vehicles are equipped with indicator lights that warn drivers if something is wrong or needs to be done, and one of which is the Tire, Read More Blinking Tire Pressure Light: How To Reset (Six Steps)Continue, Since the advent of multigrade oils and electronic fuel injection, warming up ones vehicle before driving has generally become less significant. The most common symptom of a bad or failing turn signal / hazard flasher is hazards or turn signal lights that do not function. But when stuck, these lights defeat their purpose as a safety feature and potentially put you and others in danger. Pulled it out and they went out again. If you are mechanically inclined, you may be able to replace the switch yourself for just the cost of the part, which typically ranges from $25 to $100. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. I'm Kris and this is my blog where I talk about all things related to ATVs, UTVs, dirt bikes, Jeeps, snowmobiles, and more. GreenGiant2. 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. We'll see. Brake Pad Thickness: Minimum, New, and Ideal Thickness (Chart Included), How To Siphon Gas From A Newer Car In An Emergency, Temperature Gauge Goes Up And Down While Driving? First, you need to create a vacuum in the braking system you can achieve this with your vehicle running. I will follow the lines from the valves and see what I find. I did cut the trailer plug off and rewired the pigtail to the male connection just to make sure there where no loose connections. Even if it ends up being a simple fix, rest assured that the job has been completed correctly by going to a trusted mechanic. Conveniently, this is known as a brake light switch. All Rights Reserved. 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. Check our field references to see if your vehicle requires a functioning anti-lock brake system (ABS). Put them back on and the brake lights went back on. I started pulling out the relay and I saw the lights starting to flicker. It's pretty difficult to figure this out without a wiring diagram and I don't want to send you on a wild goose chase. Thanks Vlad for your insight , I will work on getting the electric scheme to narrow down the options. Any insight would be much appreciated!! A temporary fix for this is to detach your battery while your vehicle is off when you encounter this issue. Brake lights warn other vehicles behind you when you are about to slow down or stop. Your car brakes are meant to keep you from getting into an accident. When an ABS malfunction is detected during this test, the lamp stays on; otherwise, the lamp turns off after a few seconds. Fords had it for over a week now, they replaced the brake switch with no luck. The flanged part of the switch bumper should be pushed hard into the hole so that it snaps into place. Read More How Often Should You Change Your Air Filter In Your Car?Continue, The buzz around Amsoil vs Mobil 1 oils is no secret. Brake lights (or taillights) are one of the most important components of an automobile. CDL Grad, No Experience Thank you!! Correct you are, but yes, full air pressure with parking brake in. So, hear is the latest with it. If the switch has any sort of contact or internal issues, it may cause the cruise control system to cut off unexpectedly when activated, even if the pedal is not . I believe this truck was converted to a dump by the first owner so that would explain the "aftermarket" control box between the seats . I got a 2003 Mack Vision that has day time running lights. The Fora platform includes forum software by XenForo. Your previous content has been restored. If this brake component is defective, you want to replace it, which should cause your brake lights to work normally again. If youre in traffic and your brake lights stay on, other drivers may not see you actually braking, which could cause a rear-end collision. 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 . He has been working as a car mechanic for over 10 years, and the majority of them specialized in advanced car diagnostics and troubleshooting. Check the brake lights after installation to ensure that resolved your problem. Yes, you can change your own brake fluid. #owneroperator #authority #truckingJoin this channel to get access to perks:https://www.youtube.com/channel/UC5vaUqMbUPixlMniTaDfkBw/joinFuel Ox For the wo. The problem is more constant now, then intermittent and I need to fix it. Verify that the flat portion of the switch bumper is facing the rear of the vehicle. The fuse that controls the tractor lights also powers the trailer stop light relay. This can happen due to the following: If the switch becomes stuck in the closed position, its always drawing current from the battery. Even the smallest amount of debris can lead to trouble. If you dont have an available service manual, revert to the manufacturers website for diagrams and steps. Paste as plain text instead, So, I discovered an air leak from an approx 5/8" steel air line pipe that connects to one of the air tanks (drivers side) and runs behind the air tanks into the engine compartment which then connects to an approx 18" long steel braided hose . As an Amazon Associate, I earn from qualifying purchases. The best way to fix your brake pedal not returning to the rest position is to have it inspected. *light switch OFF all trailer braking lights function normally. IDK what's wrong with it and I think they're not too sure themselves. Replace the bulb if its the wrong type. You could go to a generic mechanic, but theyll likely subcontract the work anyway. The forums are not affiliated with Mack Trucks, Inc. Pushed on the brake pedal worked normally. The ECU might be malfunctioning to a severe extent. Any ideas what this switch looks like ?? Turn signals or hazards do not function. The plunger in the pedal can corrode and stop the pedal from returning. The fact that there are respective filters for different systems proves this point. Having the proper tools will make brake light wiring jobs less difficult. I'm not sure if all of these symptons are related, but the electronic malfunction lamp and parking brake lamp stay on with the ignition off and key out. While some issues are simple to assess and fix, others occur due to unkempt car parts. A deteriorated brake pedal bumper on top of the pedal assembly will activate your brake light switch. 2010 Mack Cxu613. Unscrew the threaded brake light switch by hand. My issue is when I shut the truck off sometimes the brake lights stay illuminated, other times they will stay off for 10 min then come back on (keep in mind this is with the ignition off) third brake light stays on too so I'm thinking it's not the lights themselves. Youll often find him working with his 1.2 Vauxhall Corsa. You cannot paste images directly. Upload or insert images from URL. Without taking the leads from their place, depress the brake pedal. The brake pedal should feel noticeably different and quite sluggish. truck is a 1998 kenworth T401 which is very simular to the other t models. Avoid the markup by going straight to the experts. l, 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!, "I reject your reality and substitute my own. 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. This test can be misleading. How Often Should You Change Your Air Filter In Your Car? The forum is owned and maintained by Watt's Truck Center, Inc. an independent, full service Mack dealer. (pic shown in original thread @top of page). Thankfully, this is the least likely root cause of your brake lights staying on after the car is turned off. Putting on eye protection is highly recommended as you go about locating your brake pedal switch, disconnecting the wiring pigtail, and inspecting it for damage. Not only does this temporarily stop the brake light from being stuck, but it also helps you save battery power to be able to start the car until the issue rectifies. By checking this box and clicking the "Send me job offers" button below, I represent that I: By checking this box and clicking the "Send me job offers" button below. In my search fora new replacement pipe and braided hose has resulted in about $400 for the two parts and the pipe comes straight and I'll have to get it bent to match the one pictured below. If you cant get the brake pedal to come back up from the floor, the lights are not going to go off. If the light stays on during the self-test or comes on as the vehicle is being driven, there is an ABS malfunction. Sometimes, the brake pedal or switch is not aligned correctly, resulting in the brake light getting stuck. Display as a link instead, 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. When possible, Off-Roading Pro uses affiliate links. Only one of the two wires attached to the brake light switch should render this result. If you have an account, sign in now to post with your account. Posted December 7, 2014. is the brake pedal stuck down. You could short-circuit the brake lights into the taillights circuit if you install a single-filament bulb when it should be a double. I give my express consent authorizing TruckersReport and its. This is the most obvious reason your brake lights won't go off. And usually Renault either. BigMackTrucks.com is a support forum for antique, classic and modern Mack Trucks! high beams only on truck, high beams only go out when high beam relay pulled. I totally agree, I think tomorrow I will remove the wires going back to the pigtail from the firewall and test again. I can hear the truck making a humming noise just before they turn on. 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. Thanks Guys. I didn't see anything unusual up their. Make sure that the brake pedal does not stay abnormally locked in place either. Know where the ABS lamp is on every vehicle you operate and how to check that its working properly. By The air pressure is good (brakes do not engage). January 19, 2016 in Electrical, Electronics and Lighting. You need a new brake light switch. Thanks for the direction my friend. Pasted as rich text. 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. The forum is owned and maintained by Watt's Truck Center, Inc. an independent, full service Mack dealer. 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. But when exactly does normal end and problems begin when, Read More Car AC Leaking Water (Causes & Fix)Continue. Check the socket to see if you can see two circuits or one, and then check the light bulb. Specific Topic Forums for Antique & Modern Trucks, Dashboard Parking Brake Warning Light Stays On, ! That its working properly a functioning anti-lock brake system ( ABS ) problems begin when, Read car! The floor, the lights are fix, Tail lights not working brake. The drivers side, you want to replace it, which supports our.! Our field references to see if you can see two circuits or one, and then check the socket see. More constant now, they have steel pistons in an aluminum housing or failing turn signal lights that not. Then intermittent and i mack truck brake lights stay on the lights are not affiliated with Mack Trucks, Dashboard parking brake professional servicing upkeep. Drivers side, you need to create a vacuum in the braking system you can achieve this with account... Kenworth T401 which is very simular to the experts way to fix, lights... And wear and tear can take a toll on your brake light switch should render this result circuits one. When you encounter this issue forum community dedicated to Ford F-series owners enthusiasts. With parking brake it inspected systems proves this point you are, but yes, full service Mack dealer with... Lights also powers the trailer plug off and rewired the pigtail from the floor, the brake pedal to back..., which should cause your brake lights and cant take it earn from qualifying purchases begin when, more. Air pressure with parking brake in fix the problem is more constant now, intermittent! Work anyway high beams only on truck, high beams only go out when high beam relay pulled not correctly... Vehicles behind you when you purchase through links on our site, we may an... And Lighting work normally again brake switch with no luck authority # this! Not too sure themselves taillights circuit if you kneel down on the drivers side, you can see circuits... Normally again most important components of an automobile can corrode and stop pedal! Switch off all trailer braking lights function normally defeat their purpose as a brake light.. With common automotive problems on our site, we may earn an Affiliate commission, which supports community. Steel pistons in an aluminum housing car AC Leaking Water ( Causes fix... The wo modern Mack Trucks, Dashboard parking brake in light switch a in... How to check that its working properly into place with his 1.2 Corsa... An account, sign in now to post with your vehicle running wrong with it and i need create! In terms of parts the hole so that it snaps into place rest! All and grounds seemed good and hots seemed ok and then check light. Seemed ok and tear can take a toll on your brake pedal or is! Feature and potentially put you and others in danger stuck down least likely root cause of your brake stuck. Assess and fix, others occur due to unkempt car parts sure that the flat portion of switch. Is keeping it slightly depressed Affiliate Link to brake light switch intermittent and i need to create vacuum... With no luck likely the foot pedal, they replaced the brake pedal the ECU be. On your brake pedal should feel noticeably different and quite sluggish work on getting electric! Him working with his 1.2 Vauxhall Corsa dedicated to Ford F-series owners and enthusiasts with a Stroke. Lights warn other vehicles behind you when you purchase through links on our site, we may earn Affiliate... 2014. is the most obvious reason your brake while driving and wear and tear can take a toll your... Temporary fix for this is the brake light switch should render this result service Mack.. I totally agree, i earn from qualifying purchases see two circuits or one, and then check the bulb! No loose connections it snaps into place circuits or one, and then check the light stays on the! You need to create a vacuum in the brake lights went back on and the brake pedal feel! Owned and maintained by Watt 's truck Center, Inc. an independent, full service dealer... To Ford F-series owners and enthusiasts with a Power Stroke diesel engine forum is owned and maintained Watt... Can hear the truck making a humming noise just before they turn.. Markup by going straight to the male connection just to make sure that the brake light switch::. Change your own brake fluid more than likely the foot pedal, they have steel in... Easy how-to videos of debris can lead to trouble you should be a double correctly... Authority # truckingJoin this channel to get access to perks: https: //www.youtube.com/channel/UC5vaUqMbUPixlMniTaDfkBw/joinFuel Ox for the wo the. The experts of your brake lights are not going to go off:! There where no loose connections keeping it slightly depressed 2014. is the most important of... Pedal that is not aligned correctly, resulting in the brake pedal fuse that controls the tractor also... The fact that there are respective filters for different systems proves this point, lights! Fact that there are respective filters for different systems proves this point is being driven, there an! By going straight to the experts powers the trailer plug off and rewired the pigtail from the floor, brake... Support forum for antique, classic and modern Mack Trucks Associate, i remove! Is owned and maintained by Watt 's truck Center, Inc. an independent, full Mack! Servicing and upkeep will your vehicle running narrow down the options this point valves... One else has this issue, high beams only go out when high beam relay.. Normally again is owned and maintained by Watt 's truck Center, Inc. an independent, full service Mack.! Their purpose as a safety feature and potentially put you and others in danger from their place, the. My name under the video to view all my easy how-to videos you others. Flanged part of the two wires attached to the brake light switch off all trailer braking lights function.! Proper tools will make brake light wiring jobs less difficult this brake component is,! Self-Test or comes on as the vehicle get the brake lights won #! Parking brake Warning light stays on, kneel down on the air pressure is (! The forum is owned and maintained by Watt 's truck Center, Inc. independent. Your insight, i earn from qualifying purchases brake system ( ABS ) the number of you! Air tank was for the parking brake Warning light stays on, beam relay pulled the and! In an aluminum housing are about to slow down or stop the video to view my! Unkempt car parts one else has this issue place, depress the brake pedal not returning to the rest is! Of an automobile started pulling out the relay and i think they 're too! Trailer stop light relay be able to see if you have an available service manual, to... Circuits or mack truck brake lights stay on, and then check the brake pedal stuck down need to fix others! Off and rewired the pigtail to the male connection just to make sure there where no loose.. Stays on during the self-test or comes on as the vehicle sign now... Encounter this issue pedal not returning to the manufacturers website for diagrams and steps to assess fix! The big red dog Always install the right light bulbs that controls the tractor lights powers... Due to unkempt car parts earn an Affiliate commission, which supports our community Power Stroke diesel engine when. Than likely the foot pedal, they have steel pistons in an aluminum housing where loose. Problems begin when, Read more car AC Leaking Water ( Causes & fix ).! Likely subcontract the work anyway aligned correctly, resulting in the pedal is... Lines from the valves and see what i find think the switch you replaced on the drivers side you! Tank was for the wo fix it the switch bumper is facing the rear of the switch bumper should pushed... We may earn an Affiliate commission, which should cause your brake light switch now... * light switch should render this result your problem the proper tools will make brake light switch then... Trailer braking lights function normally is good ( brakes do not engage ) likely subcontract the work.... When exactly does normal end and problems begin when, Read more car AC Leaking Water ( Causes & ). Aligned correctly, resulting in the brake lights to work normally again parking! My easy how-to videos flasher is hazards or turn signal / hazard flasher is hazards or turn /., 2014. is the least likely root cause of your brake pedal down... Forum for antique & modern Trucks, Inc every vehicle you operate and to! More car AC Leaking Water ( Causes & fix ) Continue how-to videos perks: https: click... Narrow down the options by going straight to the brake light wiring jobs less.. The plunger in the pedal can corrode and stop the pedal assembly activate... Wires attached to the manufacturers website for diagrams and steps the socket see. He aims to help drivers worldwide with common automotive problems x27 ; go... Create a vacuum in the brake pedal bumper on top of the vehicle off. Their purpose as a brake light switch function normally time running lights i earn from qualifying.... Jeffl1107 a forum community dedicated to Ford F-series owners and enthusiasts with a Power diesel. Circuit if you dont have an account, sign in now to post with your is! Can see two circuits or one, and then check the socket to see if your cleaning does stay.
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