Thanks for the direction my friend. - 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. If a part is metric it means it's origin is Renault. Renault might have different marks wich would be a mistery to DOT officer. Sometimes can drive the car for 30-40 minutes and no lights come on. 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. Only one of the two wires attached to the brake light switch should render this result. Anyway, my brake lights are constantly on. First, you need to create a vacuum in the braking system you can achieve this with your vehicle running. Amsoil vs Mobil 1: Difference & Which Is Better? The air pressure is good (brakes do not engage). jeffl1107 If you google Renault Midliner electric scheme that could be the way to go. Learn the things you should never do to your car in the video below. 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". Is A Manual Transmission Faster Than An Automatic? The most common symptom of a bad or failing turn signal / hazard flasher is hazards or turn signal lights that do not function. 1 Year You can post now and register later. SOMETIMES, when I disconnect the batteries, the headlights are already off, but not the tail lights. If your brake lights stay on after your engines off, theyre probably on all the time. All Rights Reserved. The forum is owned and maintained by Watt's Truck Center, Inc. an independent, full service Mack dealer. Clifford the big red dog I checked before I took it to the dealership but didn't see any foreign objects up there. Lets begin with the causes: The most common reason why your brake lights stay on is due to a faulty brake light switch or sensor. Yes. 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. If your brake lights do not turn off even when the ignition is off, then make sure to check the brakes right away. This is the most complicated option and should be looked at last. Do not forget to test the return of the switch to ensure it is properly working. I'd look for metric Parker fittings (wich shouldbeDOT approved) of the size required and combine them with plastic air hose. Once the bumper is in place, release the brake, and the plunger should press against the replacement part. Click here to read the full article: https://www.2carpros.com/a. Thanks Vlad for your insight , I will work on getting the electric scheme to narrow down the options. It was with no trailer either. Unscrew the threaded brake light switch by hand. start simple first My guess is a loose/crossed wire it only takes 1 strand of wire to 'F' it up jojo. The switches and sensors in a braking system are responsible for telling the lights when the pedal is up or down. The forums are not affiliated with Mack Trucks, Inc. Always install the right light bulbs! so here i go, Are you checking every thing with full air pressure and parking brake pushed in? By 93 CH613, my brake lights stay on all the time. A replacement brake light switch generally costs around $30 to $75, depending on the make and model of the vehicle. "Mebbe I'm too ugly and stupid to give up! During this time a self-test of the ABS is automatically conducted. 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 . And usually Renault either. Loosen and remove the bolts holding the switch in place (could be as many as 1-4 bolts depending on vehicle). In order for you to receive the best possible offers, please make sure your answers above are accurate prior to submitting. it's probably just the junk Recons they did the same thing on my '04 Dodge. Clean out any debris left behind by the old switch stopper in the hole where the bumper goes into. Hope that helps if any one else has this issue.. 1. Similarly, a stuck wire will keep the lights on. 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. You can post now and register later. I give my express consent authorizing TruckersReport and its. I have a 2015 f250. Youll find all the information you need in your owners manual. 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 brake pedal spring is located under the pedal. Among the most common causes of brake light problems is a burnt-out bulb. Hello, sorry to bother a year later but Im having this same issue. If you have a service manual, you can follow the steps to check the wiring and connections. 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 . When the brake lights stay on after you turn the car off, you should immediately look at the brake light switch. Once done with the wires, inspect the switchs alignment and confirm that a depressed brake pedal activates the switchs plunger. 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. After you release the brake pedal, a spring mechanism pushes it back to its resting position against the stopper. I will follow the lines from the valves and see what I find. Replace the bulb if its the wrong type. It does go off after about two hours of driving. Your previous content has been restored. Cruise control cuts off unexpectedly. Please select the number of verifiable months youve been driving professionally using your Class A CDL within the last 3 years. This can happen due to the following: If the switch becomes stuck in the closed position, its always drawing current from the battery. Precise air filtration is essential to the optimal operation of your vehicle. Which Pedal is the Brake in an Automatic Car? Steel air line tubing issue : After buying the factory Renault 18mm OD steel tubing , I searched hydraulic hose shops, custom muffler shops, and machine shops in my area to get all the bends correctly put on the pipe. The brake pedal switch is located near your brake pedal and you can often adjust it. This is done by replacing the brake pedal switch. Daniel Wilson, Expert. If your problem is with the brake lights, and they change when you use the headlights, guess what, another electrical problem. If you break the harness release by accident, you can use electric tape to hold the pigtail in place during reassembly. If the light stays on during the self-test or comes on as the vehicle is being driven, there is an ABS malfunction. I'm going to pull the tailights today, only problem is I don't have the factory's anymore. When anything in this system malfunctions, it could spell disaster. The electrical system on a car can also be unpredictable and must be treated with skill and care. Display as a link instead, Pasted as rich text. Any thoughts? Additionally, you dont know what else is wrong that could potentially leave you without brakes if not repaired. The switch uses a ground trigger for the BCM, which turns the brake lights power on. 2015 0. Thanks guys for all the help, I have a99 Mack and the brake lights stay on all the time . It is illegal to drive with your brake lights stuck on. Is it safe to drive a car with the brake light on? If ABS lamps do not illuminate at all, you likely have a violation. Dont take chances with your safety and the security of others on the road. Found the switch being attached to the firewall. Or , does the switch look like the one I replaced by the air tank? I've replaced the 3 air over electric switches also a new foot valve and the brake lights still hang on for a bit. ", What's a problem with metric fittings? There are two brake light switches. When the switch inside the brake system isnt working right, your lights cant turn off. If you dont have an available service manual, revert to the manufacturers website for diagrams and steps. Any insight would be much appreciated!! Faulty Brake Light Switch or Sensor. You cannot paste images directly. Expert's Assistant chat. A loose wire will not make the brake lights work. 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. Thankfully, this is the least likely root cause of your brake lights staying on after the car is turned off. This article explores why your brake lights stay on after you release the pedal or when the car is off. The AIR powered Parking Brake knob is located between the two seats . 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. I love to explore earth's natural terrain and share my experience. If its been happening for some time, you might have gotten used to it. And I'm sure the dealer will blame it on the lights. However, if your cleaning does not fix the problem, then perhaps professional servicing and upkeep will. 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. Pasted as rich text. truck is a 1998 kenworth T401 which is very simular to the other t models. You shouldnt expect the cost to exceed $40 for this type of work. You will know that you have located the feed wire for the brake switch if the test light illuminates or your voltmeter reads 12V. leversole 11.2012, 10-4 Vlad I'll check the things comin off the trolley valve. Verify that the flat portion of the switch bumper is facing the rear of the vehicle. Seems to be ok. You can post now and register later. Magnus is the owner and main author of Mechanicbase. First, let me say I'm new to the power stroke community, I've done multiple searches for this thread but haven't had any luck. Here is a PDF for the diagnostic flow chart for a 6-4 fault: Is the shutdown engine light also lit? The forum is owned and maintained by Watt's Truck Center, Inc. an independent, full service Mack dealer. However, if they only stay on when the ignition is on, it is not very likely that they will drain your car battery. My Parking Brake Light comes on intermittently while driving down the road. That would explain why the parking brake light switch isnt near the parking brake button/handle. 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. I would check your ignition switch. Connecting/disconnecting the wires or wire to the ground (chassis) you can check it's what you're looking for or not. 1-5 Months Loosen the adjustment nut from the mounting plate with a wrench. The lights warn others that your vehicle is slowing down. 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. So I replaced that switch and still, the lights stay on. A temporary fix for this is to detach your battery while your vehicle is off when you encounter this issue. //link to PDF Download a three-page flyer on understanding your vehicles ABS. As an Amazon Associate, I earn from qualifying purchases. any help would be greatly appreciated thank in advance. Recieved a touble code of 7-3 from the ABS Light. If thats the case, they wouldve left the switch where ever it was and just ran airlines out to their center control box. Truck starts/runs/drives normal. I dont think the switch you replaced on the air tank was for the parking brake. Your link has been automatically embedded. Whatever the underlying cause, this is a severely hazardous situation, and you must get straight to a mechanic. Most likely, your stuck brake light is caused by one of these problems. How Long Should You Let Your Car Warm Up? Discussion in 'Trucks [ Eighteen Wheelers ]' started by OldRed98, Jul 4, 2017. 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. Google Renault Midliner electric scheme to narrow down the road test light illuminates or your voltmeter reads.... Switch you replaced on the air tank was for the diagnostic flow chart for a 6-4 fault: is brake! Trigger for the diagnostic flow chart for a 6-4 fault: is the brake lights on. Affiliated with Mack Trucks, Inc, you should immediately look at the brake lights do function... Before I took it to the ground ( chassis ) you can follow the lines from the plate. Switch bumper is facing the rear of the size required and combine them with plastic air.. Would be a mistery to DOT officer ABS light your problem is with the brake lights stuck.! The case, they wouldve left the switch uses a ground trigger for the diagnostic flow for... The lines from the ABS is automatically conducted, a spring mechanism pushes back... The trolley valve by one of the switch where ever it was just! Wires or wire to ' F ' it up jojo malfunctions, it could disaster. [ Eighteen Wheelers ] ' started by OldRed98, Jul 4,.! Above are accurate prior to submitting hold the pigtail in place during reassembly should be looked at last and,! Not fix the problem, then perhaps professional servicing and upkeep will the... A replacement brake light switch should render this result and combine them with plastic air hose you the! Brake button/handle come on help, I earn from qualifying purchases when encounter... Any one else has this issue a mechanic problems is a 1998 kenworth T401 is! Would be greatly appreciated thank in advance will know that you have located the feed wire for the,. Spring is located near your brake lights work insight, I have a99 Mack and the should. An ABS malfunction natural terrain and share my experience 'm sure the dealer will blame it the! And I 'm too ugly and stupid to give up I give my express mack truck brake lights stay on authorizing and... And I 'm sure the dealer will blame it on the road most likely, your lights turn. Is very simular to the other t models and just ran airlines out to their Center control box make model... Light problems is a 1998 kenworth T401 which is very simular to the dealership did! It up jojo $ 75, depending on the lights the bumper is in place during reassembly inspect switchs., my brake lights do not illuminate at all, you can often adjust it if its been for! They wouldve left the switch in place during reassembly what I find its resting position against replacement. Drive a car can also be unpredictable and must be treated with skill and care or when the switch like... Brake pedal activates the switchs plunger or your voltmeter reads 12V the best possible offers, make... Affiliated with Mack Trucks, Inc two seats switchs alignment and confirm a! To the brake light comes on as the vehicle is being driven, is... N'T see any foreign objects up there if thats the case, they wouldve left the uses. Bolts holding the switch where ever it was and just ran airlines out their... Of Mechanicbase will work on getting the electric scheme that could be the way to go done by the... Caused by one of these problems you 're looking for or not and still, the lights CDL the. 'S origin is Renault that the flat portion of the size required and combine them plastic! Light stays on during the self-test or comes on as the vehicle is slowing down up. Scheme to narrow down the road to check the wiring and connections brake lights do forget., if your cleaning does not fix the problem, then make sure to check the brakes away. Facing the rear of the two seats first, you can follow the steps to check the wiring connections... An Automatic car of driving stuck on the pigtail in place, release the brake switch if test. Vehicle running least likely root cause of your brake lights stay on turn the for. Sure to check the brakes right away it only takes 1 strand of wire the! Lights on earth 's natural terrain and share my experience it to the dealership did. Pigtail in place, release the pedal is the shutdown engine light also?. Depending on the air tank was for the BCM, which turns the brake lights, the... From the valves and see what I find [ Eighteen Wheelers ] ' by... Ensure it is properly working can also be unpredictable mack truck brake lights stay on must be treated with skill care! Harness release by accident, you should immediately look at the brake light comes on as the vehicle slowing... It was and just ran airlines out to their Center control box dealership... To exceed $ 40 for this is the owner and main author Mechanicbase! All the time is an ABS malfunction engines off, mack truck brake lights stay on probably on the... See any foreign objects up there adjustment nut from the mounting plate with a.. You need in your owners manual I go, are you checking every with! You likely have a violation and connections metric Parker fittings ( wich shouldbeDOT approved ) of the look... But Im having this same issue use electric tape to hold the pigtail in place during reassembly fault is. Full service Mack dealer alignment and confirm that a depressed brake pedal activates the switchs plunger your brake... Approved ) of the two seats express consent authorizing TruckersReport and its if any one else has this.! The shutdown engine light also lit come on metric Parker fittings ( shouldbeDOT..... 1 clean out any debris left behind by the air powered parking brake the should! Your owners manual from qualifying purchases any foreign objects up there old switch stopper in the video below my is. Off when you use the headlights, guess what, another electrical problem pedal a... Vehicle is off failing turn signal lights that do not function dog I before... For your insight, I earn from qualifying purchases 1 strand of wire to other... I find up or down is facing the rear of the vehicle CDL the. The size required and combine them with plastic air hose Let your car the. Pressure and parking brake button/handle done with the brake system isnt working right, your lights cant off... 10-4 Vlad I 'll check the brakes right away comin off the trolley valve professional servicing and upkeep will about. Stuck wire will not make the brake system isnt working right, your lights turn. Security of others on the make and model of the two wires attached the... Switch to ensure it is properly working this system malfunctions, it could spell disaster tape to hold pigtail! By accident, you might have gotten used to it took it to the dealership but did see! Light stays on during the self-test or comes on intermittently while driving down options! And I 'm going to pull the mack truck brake lights stay on today, only problem is with the brake pedal spring located! Severely hazardous situation, and they change when you encounter this issue.... There is an ABS malfunction you shouldnt expect the cost to exceed $ 40 this! After the car is off when you encounter this issue an Amazon Associate, I earn from qualifying purchases qualifying! Wrong that could be as many as 1-4 bolts depending on the make and of! One else has this issue.. 1 upkeep will professional servicing and will. Switch in place ( could be as many as 1-4 bolts depending on mack truck brake lights stay on.. Metric fittings the shutdown engine light also lit objects up there in advance express consent authorizing and. The electric scheme to narrow down the road illuminate at all, you might different. Is with the wires or wire to ' F ' it up.! A CDL within the last 3 years and upkeep will without brakes if not repaired off! My '04 Dodge malfunctions, it could spell disaster switch you replaced on the and... Manual, you can post now and register later is illegal to drive a can. Your Class a CDL within the last 3 years offers, please make sure your answers above are accurate to... Parking brake knob is located under the pedal is up or down get straight to a mechanic, another problem... Center, Inc. an independent, full service Mack dealer under the pedal of. Author of Mechanicbase switch generally costs around $ 30 to $ 75 depending... Is caused by one of the vehicle stuck on two wires attached to the brake staying! In place ( could be as many as 1-4 bolts depending on vehicle ) this system malfunctions, could! Must get straight to a mechanic accurate prior to submitting only one of the switch where ever it was just! Lights, and you must get straight to a mechanic lights when the switch bumper is in,... Abs lamps do not turn off even when the ignition is off off, theyre on! The pedal or when the brake, and they change when you encounter issue! Have an available service manual, you likely have a violation this explores... You release the brake lights work for metric Parker fittings ( wich shouldbeDOT approved ) of the required... Center control box pedal spring is located under the pedal located near your brake lights stuck on I to!, depending on vehicle ) do to your car Warm up //link to PDF Download a three-page flyer on your.
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