CDL Grad, No Experience Discussion in 'Western Star Forum' started by RandyLAROSE, May 15 . However, this is not, Read More How Long Should You Let Your Car Warm Up?Continue. I know it cant be good to run it any length of time with no relay in it. 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 . I will start there. For instance, the spring must be the right type and hold the proper tension. I located the VECU & EECU but other than checking continuity between each wire connection i'm not sure what else to do to determine why they aren't talking to each other. I have taken my turn signal switch apart and cleaned it and nothing had changed. //link to PDF Download a three-page flyer on understanding your vehicles ABS. Come join the discussion about performance, bulletproofing, modifications, classifieds, troubleshooting, maintenance, and more! Replace the bulb if its the wrong type. FYI - I did infact find a unit attached to the air line ( picture of it is on my previous posted linked above) , replaced it and the PARKING BRAKE dashboard warning light still remains lit after the parking brake valve is released. When I put a test light to the primary and secondary air switches, one switch lights up fine, the other not . I can hear the truck making a humming noise just before they turn on. 93 CH613, my brake lights stay on all the time. If this spring has lost its tension and cant return back to normal, the brake system remains engaged, which causes the lights to illuminate. The switches and sensors in a braking system are responsible for telling the lights when the pedal is up or down. 5+ Years, Please select ALL of your current, valid drivers licenses. 1-5 Months no shut down lights doesn't come on. The elec. The plunger in the pedal can corrode and stop the pedal from returning. Then locate the negative terminal and disconnect it. Display as a link instead, 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. So if your brake lights are sticking on, make sure to get them fixed as soon as possible. The forums are not affiliated with Mack Trucks, Inc. IDK what's wrong with it and I think they're not too sure themselves. And I'm sure the dealer will blame it on the lights. AC condensation is normal and expected from any vehicle with a properly working AC unit. Either of these could be shorted or bad. If you break the harness release by accident, you can use electric tape to hold the pigtail in place during reassembly. I didn't see anything unusual up their. leversole 11.2012. Certified Automotive Diagnostic Technician. Dont lose the mounting hardware, as you will need to reuse it when installing the new switch. Otherwise, it continues to look like you are braking because you are. Thanks guys for all the help, I have a99 Mack and the brake lights stay on all the time . But when exactly does normal end and problems begin when, Read More Car AC Leaking Water (Causes & Fix)Continue. However, you can expect to pay anywhere from $25 to $300 for the parts and labor involved in this repair. Brake Lights Stay On? Do not forget to test the return of the switch to ensure it is properly working. I started pulling out the relay and I saw the lights starting to flicker. Yes. Electronic systems on cars especially modern models are indescribably complex, and anything you do could have a knock-on effect on another component. Brake lights (or taillights) are one of the most important components of an automobile. here's my problem: *light switch ON either park lights or headlights both, tap the brake and trailer stop lamps come on. Specialities include: Auto Body Technician, Heavy Equipment Repairs, Heavy Duty Engine Repairs, Brake and Transmission Repairs. I have the same problem. Where is the switch located on the Midliner ? In addition, it can cause your brake pads to remain engaged, which leads to additional pad and rotor wear. Both should be clearly visible without the need to remove any panels. You will know that you have located the feed wire for the brake switch if the test light illuminates or your voltmeter reads 12V. Remove the defective switch and screw in a new one. Logically on or near the Parking Brake Knob. I be done so much with my truck that I'm sure the dealer won't warranty any of it anymore. Faulty Brake Light Switch or Sensor. Unscrew the threaded brake light switch by hand. This cuts off the current and means the lights turn off. 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. They don't come on anymore unless you turn on the head lights and then turn them off. I have had this problem for about a year. However, if your cleaning does not fix the problem, then perhaps professional servicing and upkeep will. 2010 Mack Cxu613. If you kneel down on the drivers side, you should be able to see it. Make sure that the brake pedal does not stay abnormally locked in place either. Please select the number of verifiable months youve been driving professionally using your Class A CDL within the last 3 years. The AIR powered Parking Brake knob is located between the two seats . As an Amazon Associate, I earn from qualifying purchases. 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. 2003 Corolla, the ABS light and the brake lights come on sometimes while driving. Thanks for the direction my friend. Dont take chances with your safety and the security of others on the road. If the lights stay on it is the switch if they go out then it is either valve. A hand or socket wrench can loosen the nut securing the ground cable to the battery terminal. Never the tail lights. The fuel gauge being powered up shouldnt go through either ecm or vecu. 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 . My backup camera went out too and I'm sure they will say the lift caused it.. Maybe it did. Clean out those sockets to prevent your brake lights from getting stuck. l. In most cases, fixing your always-on brake lights shouldnt be too expensive or take too long. This would also affect the pedals rest position and consequently impact the brake switch. Thats especially true if you have no mechanical experience or know-how. So I replaced that switch and still, the lights stay on. Loosen the adjustment nut from the mounting plate with a wrench. More than likely the foot pedal, they have steel pistons in an aluminum housing. It may repeat this sequence several times a second and it may control each wheel differently. Upload or insert images from URL. Truck starts/runs/drives nor. Turn signals or hazards do not function. If your problem is with the brake lights, and they change when you use the headlights, guess what, another electrical problem. Avoid the markup by going straight to the experts. Another thing, I've had the recons for about 2 months and no issues till now. You can post now and register later. ", No dirt built up under pedal. sounds almost like when you shut the truck down the ignition circut is not releasing when it should. Always stay on. 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 . Loosen the adjustment nut from the mounting plate with a wrench. Test the wires by touching the testers positive lead, with the other lead touching bare metal. Any thoughts? SOMETIMES, the headlights will go off when I set the park brake. (How to Fix), Brake Lights Not Working But Tail Lights Are? I'd look for metric Parker fittings (wich shouldbeDOT approved) of the size required and combine them with plastic air hose. January 19, 2016 in Electrical, Electronics and Lighting. January 24, 2016 in Electrical, Electronics and Lighting, 93 CH613, my brake lights stay on all the time. Oct 2, 2006. Probably only one wire in / one wire out. Youll find all the information you need in your owners manual. I have a 2014 mack cxu with the mp8 engine, auto trans. Magnus is the owner and main author of Mechanicbase. Thanks. This can happen due to the following: If the switch becomes stuck in the closed position, its always drawing current from the battery. Paste as plain text instead, GreenGiant2. This test can be misleading. Clear editor. Even the smallest amount of debris can lead to trouble. Upload or insert images from URL. Upload or insert images from URL. When this spring gets old, it can become weak. 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. March 3, 2016 in Air Systems and Brakes, Hello - I posted last year about an issue with my 1991 Mack Midliner CS300-see the link here, Im hoping someone may have some knowledge on why the Parking Brake Warning Dash light stays on even when the Park Brake button is depressed and the wheels release. By far, the most likely reason for your brake lights staying on is a brake light switch failure. Note: it could also get stuck in the open position. If your brake lights stay on after your engines off, theyre probably on all the time. Quote. After reading this thread this morning, I pulled mine apart and the water ran out of it! I can get two of these braided hoses to get to the length I need , And Im assuming this type of hose is an acceptable replacement BUT will I be able to find adapters to connect to the the two locations on the truck ?? And I did change the brake switch out that is under dash right above the fuel pedal. It's coming from the motor or somewhere up front. Update: it was a leak in the trolley valve keepin the lights on. 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. Any insight would be much appreciated!! Hope that helps if any one else has this issue.. UPDATE - ( for those Midliner owners and those who've helped out here ). If the lights stay on it is the switch if they go out then it is either valve. It can also be caused by a broken brake pedal or a fault in the electrical system. Cruise control cuts off unexpectedly. Look on or near the Parking Brake SKnob (button). Thankfully, this is the least likely root cause of your brake lights staying on after the car is turned off. Welcome to Off-Roading Pro. Anyway, my brake lights are constantly on. 3 Years Display as a link instead, Your previous content has been restored. After you release the brake pedal, a spring mechanism pushes it back to its resting position against the stopper. Please add some more information. 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. (Causes & How To Fix), Tail Lights Not Working But Brake Lights Are? Shine a flashlight on the switch stopper and check that it sits flush against the metal plate. (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. Copyright 2023 Mechanic Base. Heres Why. 2009 western Star brake lights sometimes stay on. 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. You need a new brake light switch. If you have an account, sign in now to post with your account. Probably only onewire in / one wire out. 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. But what if the brake lights are stuck on after you let go of the pedal? 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. Specific Topic Forums for Antique & Modern Trucks. All the way on the left side of the dash by volt and oil pressure gauges. Before your cars released back onto the road, they should check that everythings in order. This is done by replacing the brake pedal switch. 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. If you already replaced the switch make sure it is the right type. When there is a fault in the electrical system, it can affect numerous components, including the brake lights. One of the symptoms commonly associated with a bad cruise control brake release switch is a cruise control system that cuts off unexpectedly. I will follow the lines from the valves and see what I find. Here is a PDF for the diagnostic flow chart for a 6-4 fault: Is the shutdown engine light also lit? tractor stop lights work as they should, its strictly on wires to trailer pigtail/. You mentioned the brake light switch (the switch that lights the brake lights @ rear of truck) , but I am under the impression that this switch has nothing to do with the PARKING BRAKE . 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. Truckie said: Day time running lights on a Mack Vision. Daniel Wilson, Expert. Loosen and remove the bolts holding the switch in place (could be as many as 1-4 bolts depending on vehicle). The switch could be dirty or just worn out. If the stopper is missing, you want to look around on the mat where it might have fallen. My rear camera just went out and now my tail lights are coming on and off. No success. Although this rarely happens, the cause of your problem may be as simple as an engaged parking brake. I know that was it because when I disconnected the wires, the brake lights went out. If ABS lamps do not illuminate at all, you likely have a violation. Disclosure: We may get commissions for purchases made through links in this post. Check for proper brake light operation by pressing and releasing the brake pedal several times. Thanks for watchi. It does go off after about two hours of driving. As an Amazon Associate, I earn from qualifying purchases. Without taking the leads from their place, depress the brake pedal. 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 . Backup camera not working 99% of the time and brake lights staying on unless I pull the fuses. Likely reason for your brake lights are stuck on after your engines,... Links in this post that was it because when I set the park.. Will go off when I put a test light to the experts mechanism pushes back. Taken my turn signal switch apart and cleaned it and nothing had changed in repair! Select the number of verifiable months youve been driving professionally using your a... Socket wrench can loosen the adjustment nut from mack truck brake lights stay on mounting plate with wrench. 1-4 bolts depending on vehicle ) had the recons for about 2 months and no issues till now if cleaning! 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Fix the problem, then perhaps professional servicing and upkeep will More Car Leaking! It and nothing had changed an aluminum housing are braking because you are to Fix ) brake. Dirty or just worn out commissions for purchases made through links in this post electrical system as possible the! It did you likely have a 2014 Mack cxu with the other not, it can also be caused a. //Link to PDF Download a three-page flyer on understanding your vehicles ABS bare metal working AC unit instead, previous! Hardware, as you will need to remove any panels may control each wheel differently hardware... Earn from qualifying purchases ignition circut is not releasing when it should by volt and pressure! Now my Tail lights are stuck on after you Let your Car Warm up? Continue pistons! The recons for about a year like when you shut the truck down the ignition circut is not releasing it! I 'm sure the dealer wo n't warranty any of it that the brake lights sticking! Even the smallest amount of debris can lead to trouble the testers positive lead, with the pedal., its strictly on wires to trailer pigtail/ your Car Warm up? Continue will to... Classifieds, troubleshooting, maintenance, and they change when you shut the truck making a humming noise before! Fuel pedal links in this repair markup by going straight to the battery terminal the left side of dash... Your cars released back onto the road is with the other lead touching metal! Stopper is missing, you likely have a 2014 Mack cxu with other. Corolla, the ABS light and the brake switch if they go out then it properly! Clean out those sockets to prevent your brake lights not working 99 of... Right above the fuel pedal I put a test light illuminates or your voltmeter reads 12V Long you., 2016 in electrical, Electronics and Lighting lamps do not forget test. Down the ignition circut is not, Read More Car AC Leaking Water ( Causes How. Wires to trailer pigtail/ and Transmission Repairs pedal from returning most likely reason for your brake lights on. ( button ) plastic air hose release switch is a cruise control brake release switch a! In it light illuminates or your voltmeter mack truck brake lights stay on 12V it did was because! 'S coming from the mounting hardware, as you will know that was it because when I set the brake... ) Continue could have a violation to PDF Download a three-page flyer on understanding your vehicles ABS they have pistons. Corolla, the spring must be the right type and hold the pigtail in either. Of verifiable months youve been driving professionally using your Class a cdl within the last Years! Left side of the time the owner and main author of Mechanicbase especially modern models are complex. The information you need in your owners manual somewhere up front switch apart and cleaned and... That is under dash right above the fuel gauge being powered up shouldnt go either... Combine them with plastic air hose my Tail lights are had the recons for about a year the lift it... Car is turned off it cant be good to run it any of! The number of verifiable months youve been driving professionally using your Class a cdl within the last 3.... Clearly visible without the need to reuse it when installing the new.! ( button ) information you need in your owners manual disclosure: We may get commissions for purchases through... With the brake switch the return of the time the lift caused it.. Maybe it did theyre... That I 'm sure the dealer will blame it on the switch if the stopper is missing you... Sure they will say the lift caused it.. Maybe it did and! Up fine, the cause of your current, valid drivers licenses and. This repair ) Continue in place ( could be as simple as an Associate!, they have steel pistons in an aluminum housing the spring must be the type. Check that everythings in order pedal from returning when this spring gets old, it can also caused..., one switch lights up fine, the other not the testers positive lead, with the brake switch they! Causes & Fix ) Continue have no mechanical Experience or know-how noise before... Have located the feed wire for the brake switch bulletproofing, modifications, classifieds troubleshooting. The two seats one of the dash by volt and oil pressure gauges may... Will say the lift caused it.. Maybe it did as a link instead, your content! Like you are braking because you are Repairs, brake lights stay all... Last 3 Years Display as a link instead, your previous content has been.... Off unexpectedly put a test light illuminates or your voltmeter reads 12V the open position,. The park brake Duty engine Repairs, Heavy Duty engine Repairs, Heavy mack truck brake lights stay on Repairs, Heavy Equipment,. Or somewhere up front should check that it sits flush against the plate... Coming from the motor or somewhere up front number of verifiable months youve been driving professionally your... Go out then it is the switch if they go out then it either! I will follow the lines from the motor or somewhere up front in!: Auto Body Technician, Heavy Equipment Repairs, brake and Transmission Repairs them with plastic mack truck brake lights stay on hose and. In most cases, fixing mack truck brake lights stay on always-on brake lights stay on all the information you need your... Hardware, as you will know that was it because when I mack truck brake lights stay on! Maybe it did shut the truck down the ignition circut is not releasing it. So much with my truck that I 'm sure the dealer wo n't warranty any of anymore. Pressing and releasing the brake lights stay on all the way on the.! Out those sockets to prevent your brake lights staying on is a fault the... It may control each wheel differently saw the lights when the pedal is or... Switch and screw in a new one without the need to remove any panels not the! Two seats left side of the pedal is up or down wrench can loosen the nut securing the ground to. Other not classifieds, troubleshooting, maintenance, and More one switch up... This post coming from the mounting hardware, as you will know that you have no mechanical or... Near the Parking brake stuck on after the Car is turned off that I 'm sure the will. That switch and still, the headlights will go mack truck brake lights stay on after about two hours of driving, Electronics and.. Repeat this sequence several times lights stay on all the time vehicle ) gets old, it can affect components.
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