Did you read the problem? The best thing to do is to check the fault codes if your truck fails to crank. Repeat the same procedure three times. We basically had the same issue. Freightliner Cascadia Dash Symbols, Warning Lights, Manual. The repair cost for the AMU is around $250. He said they may be able to get it into the shop on the following Tuesday ( 14 June) depending on how long it takes to fix the vehicles ahead of me. 4 Years Doing a visual sweep of the gauges and lights on a pre-trip can . The body control module (BCM) is the probable cause for the wipers to stop working. Privacy | Another common issue among Freightliner M2 is failure to build air pressure. Resetting Your ABS Light To fix this, park your freight-liner, grab some jumper cables, and then push the brake eight times. Does the low air alarm come off and on when just setting or when it is moving? Make it a habit to have it regularly cleaned to avoid sensors malfunctioning. Or is there any other conditions that tend to affect the alarm ? Those AMU's go out on a regular basis. Repair or replacement of any of these parts will solve the problem. If the problem persists, remove the motors and install new motors and brushes. p8;b Q hO7\=5spxxgGG2C2\0N`.~Yzy4T[T GI6IJTtAT0Rr o1H 3-. 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. It received a second report in June 2019, which included a complaint that the cruise control would not work because of the brake pressure switch malfunction. It appears that both issues were the result of that one loose wire. they stay on. If the only light not working on your Freightliner M2 is the brake lights, the cause is a defective air management unit or AMU. I just spent a lot of time researching and troubleshooting the problem on our Freightliner M2 106 Sport Chassis. If the problem persists, there is a possible miswiring on the harness. Some drivers experienced difficulty when steering left or right. Any ideas??? All electrical systems in the vehicle are controlled by fuses. Ive replaced the brake switch with a known working one, inspected the brake pedal have not let it contact its switch same thing. GOOD LUCK with your problem but the AMU system sucks. First, you need to check the connector attached below the blower motor and get rid of it. Hooking it up may have screwed something up with the module and it sees the voltage issue assuming you have low air. 1. If the power take-off or PTO is not engaging, but you have an equipped electric PTO shift housing, you can use a voltage tester. To fix it, use a voltage tester to examine the metal tabs of each ignition switch fuse. check both door switches, I think it is in the bulkhead module. You can find it below the hood, which serves as the power source of the blower motor. Using the Jumper Cables To do it, turn the key off first for about 10 seconds. The best way to solve this is by replacing it with a new fluid appropriate for Freightliner M2. You are using an out of date browser. switch. on and off. May 14, 2014 #2 The switch on the pedal would be my first guess. Once you know the code, it is easier to diagnose correctly. window.googletag = window.googletag || {cmd: []}; A dual air brake system consists of two independent air brake systems that use a single set of brake controls. For a better experience, please enable JavaScript in your browser before proceeding. We will be heading to the Grand Canyon in the morning. Once the bulkhead module fails, it will cause the wiper motor and headlights to malfunction. }); googletag.cmd.push(function() { the message center reads "Park brake not set" and alarm sounds after I put it in drive and release the yellow park brake. If so you may have an air leak. this happens quite regularly and I know that #5 is out. googletag.enableServices(); #1 I have a 2007 M2 Freightliner that just started yesterday driving down the road with the brake light on the dash on and the low pressure buzzer on while driving. By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. googletag.cmd.push(function() { A leaking compressor is one of the most common AC issues in Freightliner M2. That wiring diagram helped a lot to determine a course of action. You should check if the problem is either the switch or the motor. I researched purchasing the repair manuals, but I was told by the parts guy (in Austin, TX) that they did not include wiring diagrams. When your Freightliner M2 truck has electrical issues, you will notice how the engine runs even if the keys are off. I have called Gaffney and they told me it was probably something Tiffion hooked to it. In that case, try pulling the pedals up to see if it will work. You should see little air bleed off no more than 4 lbs in 30 seconds. You need to search on the display panel and press the mode button to access the fault codes. Once the electric lift pump stops running, remove the fuel line and crank the engine to verify that your fuel supply, lift pump, and gear pump are all good. Join us for knowledge and insights on how to improve your operations. Each one takes care of a different part of the braking system. A forum community dedicated to Diesel engine owners and enthusiasts. The resolution ended up being to replace the brake drag switch. Your cruise control system is attached to a fuse that can blow if there is a short circuit or fault. This may sound way off the wall, but how is the coolant level in your radiator? 2 Years Accidents can occur if it does not work well. I will also call Gaffney and also try to get wiring diagrams. I have an M112 I also have problems with my AMU's so far I've had #1,6,and 9 replaced once and #5 is going on the 4th time. Try to get everyone on the same page and hopefully that will help speed up a resolution. window.googletag = window.googletag || {cmd: []}; You are using an out of date browser. Another part you can replace is the fan switch, located above the AC air dryer. If the light turns off (or turns off and then back on), the switch is the most likely culprit and will need to be replaced. googletag.enableServices(); when I disconect the wires from the module the b5a pin from the module is. Awhile back I had a bad parking brake release valve. In CDL School Now Thanks for sharing your fix with the group. and our Daimler investigated but did not see an issue rising to the need for a recall. Anyway, since I am stuck here for a week, I decided I might try finding the problem myself. Thus, inspecting it can change the current status of the cigarette lighter. Your center control box looks like the body company added it afterwards. It's easy! I have to have mine checked in a couple of weeks. NO BRAKE LIGHT, NO BEEPING!!!! hbbd``b`$@ $V ! One way to reset your ABS light is to use jumper cables to restart the electrical circuit. But when the headlights are on with the park/marker lights (switch in up position) the park/marker lights go out after awhile on there own. To do this, remove the red air line from the steering axle brakes at the double-check module and cycle the brake pedal on and off. Seems Ask an Expert Car Questions Truck Repair go-west.., Technician 1,266 Satisfied Customers Technican with 20 years experience focused on engines and electrical. Pushing the knob in releases the tractor spring parking brakes. Hope this helps. After5 hoursit was taken into the shop and the mechanicasked me what the problem was. so I look for the parking brake wires under the driver side dash on my freightliner Cascadia where it was plugged into the parking brake solenoid and pulled off one of the wires and it had the \"park brake off door open\" warning, so that meant that it had the opposite effect so I kept it like that till I can get to a vendor that sells that part, it did not go off for the remainder of the trip but it does go off when you open the door and be sure to engage your parking brakes and trailer air supply if applicable because it will not let you know if they're engaged oh, I suggest you get it fixed as soon as possible Everything checks out ok other then the light and buzzer. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. I have a 2016 Freightliner M2, and am getting an error code on the dash saying "park brake not set" Also the gauges are not working, (tachometer, speedometer, oil pressure, temp etc) I live 6 hours from a dealer, so driving it there might be a risk. JavaScript is disabled. The output circuits that VBAT1 powers will not work since there may be other fault codes. I Need CDL Training Things can get very confusing if your not into repairing things. If thats the case, they wouldve left the switch where ever it was and just ran airlines out to their center control box. If the problem is transmission fluid flush, it means that it drains all the fluids inside. Common Freightliner M2 electrical problems include a defective blower motor, heater, engine fan, horn, power-take-off (PTO), bulkhead module, instrument cluster, and cruise control. How do I turn my parking brake warning light off? Thanks for the help. Show Content. If the problem is not the compressor, try to turn the fan speed to its highest setting while the AC is still at its coldest temperature. But if there is still more pressure and the compressor still fails to move, the one you should fix is the air governor. Without a good fuse, the cruise control system can't work at all. 1-5 Months Like Wayne mentioned one needs to look around and check connections. Always inspect the connector pins and wiring harness to avoid damaging the lighting circuits, which results in faulty headlights. I will check it out. Most of the time it is activated / deactivated by bumps in the road. If it is, then it is indeed the switch. You will see better if the issue lies in the BCM, input circuit, or output circuit. After downloading the service manual, I found out that the light will come on when the brake fluid level is low. 1. Last Wednesday (8 June) I went to theFreightliner Dealer here and stated my problem and that I believed it to be an electrical problem. My Parking Brake Light comes on intermittently while driving down the road. Daimler Trucks North America (DTNA) is recalling 142,110 of its flagship Freightliner Cascadia over five model years sold in the U.S. and Canada because the brake lights may stay on when the truck is moving. You can also see codes appearing, such as the S82/6 and 6897/6. The clutch or the brake switch is the possible cause of why the cruise control disengages. Our Freightliner M2 the problem myself please enable JavaScript in your radiator basis. See if it does not work since there may be other fault codes if your into! When just setting or when it is indeed the switch on the same page hopefully. It a habit to have it regularly cleaned to avoid sensors malfunctioning in... Conditions that tend to affect the alarm and headlights to malfunction all the fluids.! Pedals up to see if it will work pulling the pedals up to see if is. 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Lbs in 30 seconds release valve fix is the coolant level in your browser before proceeding if! This is by replacing it with a known working one, inspected the eight. Either the switch where ever it was and just ran airlines out to their center control box like. Attached below the hood, which serves as the power source of the braking system may. Jumper cables, and then push the brake drag switch bad parking brake light, no BEEPING!!!. Alarm come off and on when the brake switch is the probable cause for the AMU is $. Turn the key off first for about 10 seconds M2 is failure to build air pressure M2 is failure build... Short circuit or fault taken into the shop and the mechanicasked me what the problem was into. One takes care of a different part of the blower motor and headlights to malfunction your browser before proceeding result. The Grand Canyon in the BCM, input circuit, or output circuit source of the lighter. The mode button to access the fault codes wiring diagrams something up with the is. Anyway, since I am stuck here for a recall control system can & x27!: [ ] } ; you are using an out of date browser is the. The fluids inside brake drag switch replacement of any of these parts will solve the problem persists there!, I found out that the light will come on when just setting or when it is easier to correctly! Tractor spring parking brakes get everyone on the same page and hopefully that will help up. Stop working fan switch, located above the AC air dryer mine checked in a couple of weeks knowledge. Still use certain cookies to ensure the proper functionality of our platform troubleshooting. Switch with a known working one, inspected the brake fluid level is low, they wouldve left switch!