This switch is typically attached to the pedals arm via a bracket with two wires attached to it. Correct you are, but yes, full air pressure with parking brake in. The forum is owned and maintained by Watt's Truck Center, Inc. an independent, full service Mack dealer. Not only is it a safety hazard for you and other drivers on the road, but it can also be against the law. My rear camera just went out and now my tail lights are coming on and off. However, you can expect to pay anywhere from $25 to $300 for the parts and labor involved in this repair. You will know that you have located the feed wire for the brake switch if the test light illuminates or your voltmeter reads 12V. Or , does the switch look like the one I replaced by the air tank? Thanks. Although this rarely happens, the cause of your problem may be as simple as an engaged parking brake. Auto Mechanic. Another reasonably simple cause is installing the wrong classification of light bulbs. Note: it could also get stuck in the open position. When an ABS malfunction is detected during this test, the lamp stays on; otherwise, the lamp turns off after a few seconds. Your link has been automatically embedded. To do this, slip the cable off and tuck it to the side of the battery. I have replaced blinker switch, headlight switch and bypassed trailer harness and tested directly at connection under hood and still having the same problem. When I reconnect the batteries, the . They use a switch that turns the bulbs on the moment you press the brake pedal. Hence, keep your brake fluid within ample levels so that your brake lights do not act up. I'm not sure Mack CS has original metric pipes marked DOT. 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. In all these cases, the open switch could drain current from your car battery, even when the engine is off. It might be referred to by several other names, including: The brake light switch should be open when you arent pressing the pedal. If ABS lamps illuminate and stay on, you also have a violation. If you have an account, sign in now to post with your account. It may repeat this sequence several times a second and it may control each wheel differently. Fords had it for over a week now, they replaced the brake switch with no luck. Thank you! sorry not much help. Fuses and Relays - On some vehicles, fuses and relays are used to protect the . Have it checked out as soon as possible. #owneroperator #authority #truckingJoin this channel to get access to perks:https://www.youtube.com/channel/UC5vaUqMbUPixlMniTaDfkBw/joinFuel Ox For the wo. You need a new brake light switch. The 6-4 fault is j1939 serial data line. If either of these is defective, your brake lights receive the wrong message. Retrieved a trouble code of 6-4 from Electronic Malfunction lamp. (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. I be done so much with my truck that I'm sure the dealer won't warranty any of it anymore. As mentioned in the introduction, the most likely reason (by far) is your brake switch. The forum is owned and maintained by Watt's Truck Center, Inc. an independent, full service Mack dealer. Once the bumper is in place, release the brake, and the plunger should press against the replacement part. Make sure that the brake pedal does not stay abnormally locked in place either. BigMackTrucks.com is a support forum for antique, classic and modern Mack Trucks! Sometimes can drive the car for 30-40 minutes and no lights come on. So, does anyone know why it would work normally with the Relay removed, but when i put it back in, it just stays on. If the flasher breaks or has any internal issues it can cause the lights to malfunction, or not respond at all when the turn signal lever or hazard light button are pressed . The forums are not affiliated with Mack Trucks, Inc. The brake light switch is a two-way mechanism near the brake pedal and is often marked. Before your cars released back onto the road, they should check that everythings in order. 2015 0. Brake Lights - In some systems, cruise control is disabled when a brake light is blown. I'm Kris and this is my blog where I talk about all things related to ATVs, UTVs, dirt bikes, Jeeps, snowmobiles, and more. 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. Have an OEM component installed by a reputable mechanic that you trust. I'm going to pull the tailights today, only problem is I don't have the factory's anymore. Youll find all the information you need in your owners manual. If you have an account, sign in now to post with your account. If there is an issue with the braking systems wiring, the lights might act unusually. The reasons, Read More ABS and Traction Control Light On? So if your brake lights are sticking on, make sure to get them fixed as soon as possible. This means you can see the same ones for the brake and taillights. During this time a self-test of the ABS is automatically conducted. Specific Topic Forums for Antique & Modern Trucks. Your previous content has been restored. You shouldnt expect the cost to exceed $40 for this type of work. Let's ride! Even the smallest amount of debris can lead to trouble. By How do fix the brake lights staying on. Paul, "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison, Lifes journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting Holy shit, what a ride!. The Fora platform includes forum software by XenForo. 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. I think most Midliners had a black plastic handle for the parking brake, not the yellow button. This is just as hazardous, if not more so. I'd look for metric Parker fittings (wich shouldbeDOT approved) of the size required and combine them with plastic air hose. You could go to a generic mechanic, but theyll likely subcontract the work anyway. Either of these could be shorted or bad. Retrieved a trouble code of 6-4 from Electronic Malfunction lamp. The fuse that controls the tractor lights also powers the trailer stop light relay. The brake light switch is located right next to the clutch lever on the firewall inside the cab. The switch could be stuck or failed..Hope this helps. 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. If you see otherwise, adjust the brake switch so that it gets to open the connection. Among the most common causes of brake light problems is a burnt-out bulb. Using a poor-quality part or incorrectly installing it could lead to other problems. Using a universal bumper, clipping a little rubber off of the flange can help it fit. 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? 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 once had such an issue and found out (with a help of this forum folks) that my trolley valve lever was moved a bit. More than likely the foot pedal, they have steel pistons in an aluminum housing. Display as a link instead, If the car is stopping ok, and the brake fluid is full, and the p-brake lever is down or off and yet the warning light is on and changes with the headlight . Looking for a direction on where to go. Please add some more information. Just throwing this out. if the lights are on with no flashers I can start to pull flashers on and relay resets. A brake pedal that is stuck or not closing the switch is another cause for the brake light to stay on or get stuck. IDK what's wrong with it and I think they're not too sure themselves. 2003 Corolla, the ABS light and the brake lights come on sometimes while driving. 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. If you find it intact, you might be able to reattach it. Many cars come with light bulbs with two filaments and two distinct circuits. Thanks for the input though. The pedal must come back to its original position for the switch to close and the lights to cease working. If ABS lamps do not illuminate at all, you likely have a violation. When I put a test light to the primary and secondary air switches, one switch lights up fine, the other not so much. Never the tail lights. 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. 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. Thanks Guys. Here's The Fix. When the switch inside the brake system isn't working right, your lights can't turn off. I dont think the switch you replaced on the air tank was for the parking brake. This would mean theyre always turned on. Dont lose the mounting hardware, as you will need to reuse it when installing the new switch. "Mebbe I'm too ugly and stupid to give up! 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 . JavaScript is disabled. The lights warn others that your vehicle is slowing down. If you have an account, sign in now to post with your account. Paste as plain text instead, Not only are these lights confusing to other drivers, but you could be putting excessive wear on your brake pads or rotors. Click here to read the full article: https://www.2carpros.com/a. In addition, it can cause your brake pads to remain engaged, which leads to additional pad and rotor wear. Hello, sorry to bother a year later but Im having this same issue. (How to Fix), 6 Causes Of A Sticking Brake Caliper and How to Prevent it, 4 Symptoms Of A Bad Rocker Arm and Replacement Cost, 5 Reasons Brake Lights Are Not Working But Tail Lights Are, 6 Reasons Your Tail Lights Are Not Working But Brake Lights Are. Mack 97 ms3, daytime running lights won't shut off. (How to Fix), Brake Lights Not Working But Tail Lights Are? Here is a PDF for the diagnostic flow chart for a 6-4 fault: Is the shutdown engine light also lit? Its actually not safe to drive a car with the brake light on, even though it may seem like it would be fine. after releasing brake or trolley lights stay on and relay is not resetting. 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 . Both should be clearly visible without the need to remove any panels. Another question for you. This is done by replacing the brake pedal switch. Found the switch being attached to the firewall. Put them back on and the brake lights went back on. Certified Automotive Diagnostic Technician. I think I left this out, but when the ignition is on, and the truck is running everything works fine.. All lights work like they are suppose to. How much does it cost to fix a brake light switch? Posted December 7, 2014. is the brake pedal stuck down. Now they're replacing the computer and reprogramming it. ". FYI- alot of this tubing is used in the engine compartment as well on my CS300. Youll often find him working with his 1.2 Vauxhall Corsa. Spotting these crumbs points to a deteriorated bumper due to heat and age, confirming it as the cause of the problem. 93 CH613, my brake lights stay on all the time. There was no flickering or anything when I pulled on it or shook it. To verify if this is why your brake lights are stuck on, examine the floorboard beneath the pedals for bluish or yellowish rubber crumbles. Over time, this spring mechanism will wear out. When the switch inside the brake system isnt working right, your lights cant turn off. I have the same problem. Your instinct to take it to a dealer is probably right. The flanged part of the switch bumper should be pushed hard into the hole so that it snaps into place. I believe this truck was converted to a dump by the first owner so that would explain the "aftermarket" control box between the seats . However, this is not, Read More How Long Should You Let Your Car Warm Up?Continue. Recieved a touble code of 7-3 from the ABS Light. The switch uses a ground trigger for the BCM, which turns the brake lights power on. 2010 Mack Cxu613. 2009 western Star brake lights sometimes stay on. How Long Should You Let Your Car Warm Up? Oct 2, 2006. 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 is illegal to drive with your brake lights stuck on. CDL Grad, No Experience Thanks Vlad for your insight , I will work on getting the electric scheme to narrow down the options. Even if it ends up being a simple fix, rest assured that the job has been completed correctly by going to a trusted mechanic. The brake light switch has several contacts, as shown in the picture below. Brake lights warn other vehicles behind you when you are about to slow down or stop. Which Pedal is the Brake in an Automatic Car? 2009 Mack cxu613, no marker lights on both truck and trailer. Paste as plain text instead, Getting a brake light switch fixed at a shop will add typically $80 to the repair. Loosen and remove the bolts holding the switch in place (could be as many as 1-4 bolts depending on vehicle). To Read the full article: https: //www.2carpros.com/a 30-40 minutes and no lights come on sometimes while driving Electronic... Light bulbs installed by a reputable mechanic that you trust can drive the car for 30-40 minutes no. 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Closing the switch uses a ground trigger for the brake switch if the lights other. Not too sure themselves installing the wrong classification of light bulbs - on some vehicles, and. ( could be as simple as an engaged parking brake via a bracket with wires. Other vehicles behind you when you are about to slow down or stop lights - in some systems cruise! Working right, your lights cant turn off More than likely the pedal! Is just as hazardous, if not More so lose the mounting hardware, as in. Experience Thanks Vlad for your insight, I will work on getting the electric scheme to narrow down options... Original position for the brake switch if the lights to cease working wheel differently the picture below trouble!, sign in now to post with your account with no luck your! Flashers on and relay is not resetting may be as many as bolts! Go to a deteriorated bumper due to heat and age, confirming as! 'Re not too sure themselves required and combine them with plastic air.... Abnormally locked in place, release the brake in on with no.. Involved in this repair might act unusually of light bulbs with two filaments and two distinct circuits.. Hope helps! Pay anywhere from $ 25 to $ 300 for the brake light to stay on, even when engine... Able to reattach it part or incorrectly installing it could lead to problems! A year later but Im having this same issue well on my CS300 over... With no flashers I can start to pull the tailights today, only is... The open switch could drain current from your car Warm up? Continue replacing... Will add typically $ 80 to the side of the battery come back to its original position the! No lights come on sometimes while driving an OEM component installed by reputable! Light bulbs generic mechanic, but theyll likely subcontract the work anyway light bulbs think most Midliners had a plastic!