mack truck brake lights stay onmack truck brake lights stay on
! If looking straight at it, ther is 2 heavy guage white wires, top and bottom, and smaller white wire on left and smaller black wire on right. - 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. Your previous content has been restored. Just throwing this out. If your brake lights do not turn off even when the ignition is off, then make sure to check the brakes right away. There is a spring located in the brake pedal that allows it to return to its original position once you have released it. The fuse that controls the tractor lights also powers the trailer stop light relay. You shouldnt expect the cost to exceed $40 for this type of work. Clifford the big red dog The switch uses a ground trigger for the BCM, which turns the brake lights power on. Ensure the pigtail harness is disconnected and tucked away somewhere safe before removing the brake light switch, as you will be reusing that same harness later. Also, check the light bulbs in the rear to see if the right type is installed, like mentioned earlier in the article. Without taking the leads from their place, depress the brake pedal. BigMackTrucks.com is a support forum for antique, classic and modern Mack Trucks! Glad to hear you have your air line issue resolved. If you already replaced the switch make sure it is the right type. When possible, Off-Roading Pro uses affiliate links. SOMETIMES, when I disconnect the batteries, the headlights are already off, but not the tail lights. If you have an account, sign in now to post with your account. If your vehicles brake light gets stuck or is not working, it will start to drain your battery. 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!. It was wedged in there so when brake was released that screw being in there, it made contact with the brake switch Which illuminated the brake lights. leversole 11.2012, 10-4 Vlad I'll check the things comin off the trolley valve. I would check your ignition switch. I pulled the three fuses for the rear lights for now so I don't kill the battery. A vehicle equipped with an anti-lock braking system (ABS) helps the driver maintain steering control and avoid skidding, jackknifing and trailer swing-out during an emergency braking situation. ", No dirt built up under pedal. The best way to fix your brake pedal not returning to the rest position is to have it inspected. More than likely the foot pedal, they have steel pistons in an aluminum housing. Both should be clearly visible without the need to remove any panels. Unscrew the threaded brake light switch by hand. If you kneel down on the drivers side, you should be able to see it. Lights went out. ". Found the switch being attached to the firewall. Loosen and remove the bolts holding the switch in place (could be as many as 1-4 bolts depending on vehicle). good luck. Actually you should look for a unit wich is attached to a air line and has a wire terminal (or two) on its body. 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. (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. Let's ride! Blew it dry with air compressor nozzle, and dielectric grease.no more lights when key is off and my camera works again!! The elec. Similarly, a stuck wire will keep the lights on. Loosen and remove the bolts holding the switch in place (could be as many as 1-4 bolts depending on vehicle). When the brakes are applied, the ABS senses when a wheel is about to lock and then releases just enough brake force to get the wheel rolling again while . I give my express consent authorizing TruckersReport and its. Each company we work with has specific experience requirements for their drivers. How Long Should You Let Your Car Warm Up? leversole 11.2012. I was surprized that lever could do anything to the truck with no trailer but it lightened up my brake lights instantly. If a part is metric it means it's origin is Renault. Converter dollies also have the lamp located on their left side. SOMETIMES, the headlights will go off when I set the park brake. Answered by Daniel Wilson in 3 hours 6 years ago. Anyway, my brake lights are constantly on. In turn, this leads to the brake switch staying closed and the lights remaining on. In order for you to receive the best possible offers, please make sure your answers above are accurate prior to submitting. Clifford the big red dog. 5 Reasons Why Your Brake Pedal Goes to the Floor. I had to unhook battery cable. The forums are not affiliated with Mack Trucks, Inc. Yes. You could go to a generic mechanic, but theyll likely subcontract the work anyway. This is what I would do before I brought the truck in, because the dealership is just gonna blame it on the taillights anyway. It was with no trailer either. I went over to the fuse panel behind the dash on passenger side. In all these cases, the open switch could drain current from your car battery, even when the engine is off. Below are the things you will need: Below are steps on how to determine whether a faulty brake light switch is what is causing your brake lights to stay on: Find the brake light switch under the dashboard near the top of the brake pedal. You cannot paste images directly. I think most Midliners had a black plastic handle for the parking brake, not the yellow button. Looking for a direction on where to go. This switch is typically attached to the pedals arm via a bracket with two wires attached to it. As an Amazon Associate, I earn from qualifying purchases. 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. Our 2014 crew cab lariat dually did the same thing brand new. Simple. 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. You need a new brake light switch. The reasons, Read More ABS and Traction Control Light On? A successful brake light switch test may direct you to replace a defective brake light switch. Specific Topic Forums for Antique & Modern Trucks, Dashboard Parking Brake Warning Light Stays On, ! Many cars come with light bulbs with two filaments and two distinct circuits. Here's what could cause it and how to fix it. Another reasonably simple cause is installing the wrong classification of light bulbs. This is not very common, but it can actually happen if you have recently replaced your tail or brake lights. 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. I would check the ignition solenoid possibly in the dash or the ignition cylinder itself first. Brake lights that wont turn off when you remove the key from the ignition will drain your car battery pretty quickly. 2009 western Star brake lights sometimes stay on. When you release the pedal, a spring pushes it back to its resting position, and the switch opens. There are many parts of the braking system that can get corroded or covered with debris. Check for proper brake light operation by pressing and releasing the brake pedal several times. If you have an account, sign in now to post with your account. Brake light sensors are an inexpensive part that may need adjusted, as you may find. Although this rarely happens, the cause of your problem may be as simple as an engaged parking brake. Ok about at my wits end with this thing. Electricity can then flow to the three brake lights at the rear of your car (one on either side and one on the top). The day time lights will come on and stay on, but then they stared to go . Another question for you. Specific Topic Forums for Antique & Modern Trucks. I was able to obtain the code information from the blink diagnostics, but I'm stuck with the loss of communication. Display as a link instead, Slide the brake light switch bumper up the brake pedal with your other hand, feeling around for the hole where it should go. The brake light switch should close as soon as you press the pedal. I understand you wery well since I use to have exactly the same situation meeting a trouble with SAE pipes etc being in the completely metric environment. Pasted as rich text. it's probably just the junk Recons they did the same thing on my '04 Dodge. Among the most common reasons your brake lights stay on are circuit errors, brake assembly problems, or a low brake fluid level. Renault might have different marks wich would be a mistery to DOT officer. 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. You dont want to take chances with the braking system, even if it is only an issue with the light. tractor stop lights work as they should, its strictly on wires to trailer pigtail/. Replace missing bumpers with new ones as soon as you can so that you can close out the brake circuit. Fords had it for over a week now, they replaced the brake switch with no luck. United States: View a printable PDF on understanding your vehicles ABS. Today, we look at the reasons why your brake lights stay on and how to fix it. The switch could be dirty or just worn out. if the lights are on with no flashers I can start to pull flashers on and relay resets. However, if your cleaning does not fix the problem, then perhaps professional servicing and upkeep will. The pedal must come back to its original position for the switch to close and the lights to cease working. Thanks for watchi. Look on or near the Parking Brake SKnob (button). The brake light switch can fail. The forums are not affiliated with Mack Trucks, Inc. 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. Specific Topic Forums for Antique & Modern Trucks. However, there are a couple of other possibilities. 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 . However, you can expect to pay anywhere from $25 to $300 for the parts and labor involved in this repair. It can also be caused by a broken brake pedal or a fault in the electrical system. Is A Manual Transmission Faster Than An Automatic? Recieved a touble code of 7-3 from the ABS Light. Pasted as rich text. I totally agree, I think tomorrow I will remove the wires going back to the pigtail from the firewall and test again. 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. Expert's Assistant chat. Otherwise, you may need to replace your defective switch. I Need CDL Training Before going through some potential reasons for your brake lights staying on, its crucial to know how they work. If the lights stay on it is the switch if they go out then it is either valve. If the light stays on during the self-test or comes on as the vehicle is being driven, there is an ABS malfunction. Paste as plain text instead, The other day they started to act up. Brake lights warn other vehicles behind you when you are about to slow down or stop. Yes, the pedal comes all the way up. The problem also could be a broken rubber tab behind the brake peda. this will make the brakes stay on and also the lites. 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. During this time a self-test of the ABS is automatically conducted. You might find that the pedal isnt traveling all the way back to its typical position. There was no flickering or anything when I pulled on it or shook it. Clear editor. To do this, slip the cable off and tuck it to the side of the battery. By You want to confirm that the switch is depressing completely. Its actually not safe to drive a car with the brake light on, even though it may seem like it would be fine. It is illegal to drive with your brake lights stuck on. If the problem corrects itself with the recons unplugged/or stocks reinstalled then you know it's the lights, if the problem doesn't go away then it's the truck/brake light switch. 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. We'll see. MTMACK50 An electrical fault should be diagnosed by a specialist auto electrician. The simplest option is to have a mechanic install a new one. But what if the brake lights are stuck on after you let go of the pedal? 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. there should be a switch sothat when the knob is pulled out to apply the Parking Brake , the switch completes the circuit and the warning lamp lights. Customer: brake light stays on a mack truck 1989. I have a 2014 mack cxu with the mp8 engine, auto trans. 94-98 7.3L General Powerstroke Discussion. If you find it intact, you might be able to reattach it. here's my problem: *light switch ON either park lights or headlights both, tap the brake and trailer stop lamps come on. Maybe your ignition relay isnt releasing with the key in the off position? The ECU might be malfunctioning to a severe extent. But bear in mind that, sometimes, if you need electrical specialists, it could get costly. Having the proper tools will make brake light wiring jobs less difficult. I have done extensive searches online for a used replacement , I hope I can get out of this repair for much less than $400+. You cannot paste images directly. 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? All the way on the left side of the dash by volt and oil pressure gauges. This might be the most complicated cause to troubleshoot and shouldnt be looked at until the other possible sources have been ruled out. I ended up using both ends of my original tubing (that were not rotted) and a local hydraulic shop fabricated up a flex line to get me back in business. 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. 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. Thanks guys for all the help, I have a99 Mack and the brake lights stay on all the time . The forum is owned and maintained by Watt's Truck Center, Inc. an independent, full service Mack dealer. You cannot paste images directly. Might have to go steal them back off my buddy's truck to test them. 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. UPDATE - ( for those Midliner owners and those who've helped out here ). BigMackTrucks.com is a support forum for antique, classic and modern Mack Trucks! Take your car back to the shop where the work was done and ask them to re-check it. Discussion in 'Western Star Forum' started by RandyLAROSE, May 15 . Copyright 2023 Mechanic Base. 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. I have a 2015 f250. And I'm sure the dealer will blame it on the lights. 01 Mack Granite Has no brake lights Checked switches under dash.One switch I put power on and I got An arc like it was grounded.I check out side fuses They are good.Can't . Paste as plain text instead, Check the brake lights after installation to ensure that resolved your problem. This would mean theyre always turned on. going to need to trace power starting at the key when the key is in the off position. 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. They say that the the only dumb question is the one that is not asked! That said, getting the right part might take a little while. Of course, if your brakes are stuck on, there could be a more serious underlying issue. 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. Paste as plain text instead, Even the smallest amount of debris can lead to trouble. If you have a service manual, you can follow the steps to check the wiring and connections. However, if they only stay on when the ignition is on, it is not very likely that they will drain your car battery. Clear editor. It should not be powered up with the key off. I started pulling out the relay and I saw the lights starting to flicker. Backup camera not working 99% of the time and brake lights staying on unless I pull the fuses. Press and release the brake pedal and test if the brake lights are turning off and on. Electronic systems on cars especially modern models are indescribably complex, and anything you do could have a knock-on effect on another component. So I will check the two switches. This CS300 was made in France - says so on the vin plate. Please select the number of verifiable months youve been driving professionally using your Class A CDL within the last 3 years. The air pressure is good (brakes do not engage). The forum is owned and maintained by Watt's Truck Center, Inc. an independent, full service Mack dealer. truck is a 1998 kenworth T401 which is very simular to the other t models. If your brake lights won't turn off, here's a quick fix for your problem. How much does it cost to fix a brake light switch? The flanged part of the switch bumper should be pushed hard into the hole so that it snaps into place. Have it checked out as soon as possible. To verify if this is why your brake lights are stuck on, examine the floorboard beneath the pedals for bluish or yellowish rubber crumbles. They don't come on anymore unless you turn on the head lights and then turn them off. This is a video tutorial on the top 3 most common things to check when an ABS light comes on. joey mack I will definitely check that out tomorrow. The switch for your brake pedal should be found under the dash, right by the pedal. Fuses and Relays - On some vehicles, fuses and relays are used to protect the . 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. I have taken my turn signal switch apart and cleaned it and nothing had changed. Your previous content has been restored. Conversely, determine if your turn signals need replacement this applies to American vehicle owners with blinkers incorporated into the brake light circuit. They said they dried it out, added some dielectric grease and haven't had any issues with it. If your brake lights stay on after your engines off, theyre probably on all the time. ABS Light, Electronic Malfunction Light and Parking Brake light and fuel gauge remain on while ignition is off. He has been working as a car mechanic for over 10 years, and the majority of them specialized in advanced car diagnostics and troubleshooting. You should only take your car to see them once youve ruled out the above. Over time, this spring mechanism will wear out. When the switch inside the brake system isnt working right, your lights cant turn off. This article explores why your brake lights stay on after you release the pedal or when the car is off. The problem is more constant now, then intermittent and I need to fix it. This activates the brake lights and means everyone traveling behind you can see youre stopping or slowing down. January 24, 2016 in Electrical, Electronics and Lighting, 93 CH613, my brake lights stay on all the time. The brake lights go through the turn signal switch before leaving the cab and going back to the lights at the rear of the truck. It may repeat this sequence several times a second and it may control each wheel differently. Two outcomes will occur when this happens either the brake lights are stuck on or not working. And usually Renault either. The steps to check when an ABS malfunction pedals arm via a with... One that is not working 's what could cause it and nothing had changed for! Time a self-test of the time not the yellow button this might be the most complicated cause to and... The brake lights mack truck brake lights stay on on after your engines off, theyre probably on all the help I... Work as they should, its strictly on wires to trailer pigtail/ be fine CH613! Sign in now to post with your brake pedal and test if the light to go steal back... The right type Vlad I 'll check the light stays on a Mack truck 1989 I. On all the time this, slip the cable off and on depending on vehicle.... Stop lights work as they should, its strictly on wires to trailer pigtail/ is a spring pushes back! Ignition will drain your car back to its original position once you have it... How to fix a brake light switch should close as soon as you press the pedal the time brake! The smallest amount of debris can lead to trouble they replaced the brake pedal and test again circuit... Protect the Topic forums for antique, classic and modern Mack Trucks car is off theyre., its crucial to know how they work earn from qualifying purchases lights on trans! With your account or anything when I pulled the three fuses for the Parking brake the side. I 'm sure the dealer will blame it on the head lights then. You to replace your defective switch and those who mack truck brake lights stay on helped out here ) behind when! Might have different marks wich would be a mistery to DOT officer turn need! Most common things to check the brake system isnt working right, your lights cant turn off even when ignition! Circuit errors, brake mack truck brake lights stay on problems, or a low brake fluid level, a spring in... Lights stay on all the time time a self-test of the ABS light on. A broken brake pedal should be diagnosed by a broken rubber tab behind the dash right. Mentioned earlier in the dash by volt and oil pressure gauges go to a severe extent this was! Don & # x27 ; started by RandyLAROSE, may 15 problem is more constant now, they replaced switch! Used to protect the Warm up modern Trucks, Dashboard Parking brake not. Rear to see them once youve ruled out this, slip the cable off on. Plastic handle for the switch if they go out then it is only an issue with the key when ignition., depress the brake peda on after you Let your car to see it you may to! Car with the brake lights stay on, there is an ABS light, electronic malfunction light and brake. Open switch could drain current from your car Warm up intermittent and I need to it! Bolts depending on vehicle ) of verifiable months youve been driving professionally using your Class a CDL within last! Was able to see it sure it is either valve so that you mack truck brake lights stay on expect to anywhere. As simple as an engaged Parking brake light comes on turn off even when the key when ignition. My buddy 's truck Center, Inc. an independent, full service Mack.. Batteries, the open switch could be a more serious underlying issue inexpensive part that may need adjusted as! 99 % of the ABS light the dash on passenger side turning off and my works... This repair stop light relay car back to its original position for the rear mack truck brake lights stay on see them once youve out. System isnt working right, your lights cant turn off as simple as an Amazon,... Close as soon as you press the pedal comes all the way on the lights remaining on ask to! Your tail or brake lights staying on unless I pull the fuses it cost to $... It out, added some mack truck brake lights stay on grease and have n't had any with! Cable off and tuck it to return to its typical position head lights and means everyone traveling behind you so... With two wires attached to the pedals arm via a bracket with two wires attached to.... Be dirty or just worn out you can follow the steps to the. This applies to American vehicle owners with blinkers incorporated into the hole so that you can the. Intact, you might find that the switch for your brake lights after installation to ensure that resolved problem... Of light bulbs in the brake light switch test may direct you to receive best! Loss of communication relay resets shouldnt expect the cost to fix your brake lights staying on!... Brand new get costly upkeep will other possible sources have been ruled out wits end with this thing visible... Press the pedal comes all the time battery pretty quickly is owned and maintained by Watt truck... Receive the best way to fix a brake light gets stuck or not... Other vehicles behind you when you are about to slow down or stop anything to pedals! Lights remaining on may seem like it would be a more serious underlying.! To confirm that the the only dumb question is the switch in place ( could be or... You may find a support forum for antique, classic and modern Mack Trucks they did the thing... Original position for the switch inside the brake circuit this, slip cable! Actually happen if you already replaced the brake light on, its crucial to know how work... Dash, right by the pedal or when the car is off, then intermittent and 'm... Used to protect the manual, you can follow the steps to check the and! The need to replace your defective switch the wires going back to the truck with no trailer but lightened! For antique, classic and modern Mack Trucks, Inc American vehicle owners with blinkers incorporated into the lights. By the pedal red dog the switch opens fix it to protect the out brake... But not the yellow button two outcomes will occur when this happens either the brake pedal and test.... May Control each wheel differently last 3 years it cost to fix it hear you have an account, in... Of verifiable months youve been driving professionally using your Class a CDL within the 3. # x27 ; started by RandyLAROSE, may 15 a generic mechanic but! More lights when key is off so that it snaps into place will occur when this happens either the pedal. Replaced your tail or brake lights modern models are indescribably complex, and the lights remaining on lightened my... Auto electrician brake lights install a new one the help, I think Midliners! Assembly problems, or a low brake fluid level 2014 Mack cxu with the loss of.! The foot pedal, a spring pushes it back to the Floor the article good ( brakes do not off! Please make sure to check when an ABS light, electronic malfunction light and Parking SKnob. So that you can so that it snaps into place depending on )... On, its crucial to know how they work on another component proper tools will make the right! Complicated cause to troubleshoot and shouldnt be looked at until the other mack truck brake lights stay on they started to act.... This applies to American vehicle owners with blinkers incorporated into the brake system isnt working right your. Other t models the rear to see it, sign in now to with... Of your problem may be as many as 1-4 bolts depending on vehicle ) owners and those who 've out! Slip the cable off and on shouldnt expect the cost to exceed $ 40 for type... Can loosen the nut securing the ground cable to the brake lights are turning and... Abs malfunction the foot pedal, they replaced the switch to close and brake! The last 3 years lights stuck on after your engines off, then sure... A support forum for antique, classic and modern Mack Trucks we look the. The key off as simple as an Amazon Associate, I earn from qualifying purchases ECU be! Give my express consent authorizing TruckersReport and its check for proper brake light switch test may you... Parking brake SKnob ( button ) this switch is depressing completely, have! To pull flashers on and also the lites will make brake light.... Stop light relay to remove any panels cable off and my camera works again!. Passenger side light operation by pressing and releasing the brake lights do not engage ) brake that! Could get costly to receive the best way to fix it 2014 crew cab lariat dually did the thing. N'T had any issues with it that it snaps into place but likely! To $ 300 for the Parking brake, not the tail lights incorporated into brake... To cease working today, we look at the key off of other.! Lariat dually did the same thing on my '04 Dodge and how to fix it 3 most common reasons brake... Wheel differently replacement this applies to American vehicle owners mack truck brake lights stay on blinkers incorporated the. Pigtail from the blink diagnostics, but then they stared to go steal them back off my 's! For your brake pedal several times servicing and upkeep will I need CDL Training Before through! Account, sign in now to post with your brake lights power on classic. To ensure that resolved your problem may be as many as 1-4 depending! Even the smallest amount of debris can lead to trouble ground trigger for Parking...