Why are the brake lights stuck on my Freightliner?

Only thing we can figure is that it has an air switch that when you push the brake pedal with air pressure built up then That puts the brakes on. Because when there is no air pressure, then pushing the pedal doesn’t turn on the brake lights. Only problem is we cannot find that air switch.

Where are the brake lights on a Freightliner M2?

Found a corroded wire from the AMU to the CHM not far from the AMU plug. Almost like the wire had been probed at one time and corroded in the tiny hole left in the insulation.

Are there any recalls on Freightliner Custom cabs?

Daimler Trucks North America is recalling eight years of Freightliner Custom Chassis Cabs because a bolt issue could disable the brake lights and lead to a crash. If the bolt, called a clevis pin, rubs or bends on the mount holding the brake pedal, the bolt could detach. That would cause the brake lights to stop working.

Where is the air switch on a Freightliner?

Only problem is we cannot find that air switch. This truck has the brake pedal that goes down into the floor, so the air valve assembly is under the cab by the pedal, but there are NO wires that go to anything on it.

Found a corroded wire from the AMU to the CHM not far from the AMU plug. Almost like the wire had been probed at one time and corroded in the tiny hole left in the insulation.

Why do the brake lights stay on after the pedal is released?

There have been complaints that the brake (stop) lights have been staying on after the brake pedal has been re- leased on some Business Class M2 trucks. The following procedure is designed to help diagnose this issue. IMPORTANT: Please make notes of the results of the following tests.

What to do when none of the brake lights work?

None of the Brake Lights Work When none of the brake lights work, you need to concentrate on those components or devices that may affect the whole circuit: This includes the fuse, brake light switch, turn light switch (on some vehicle models), and the part of the circuit feeding current to the brake light circuit.

Is it illegal to drive without a brake light?

First of all, you will get pulled over and be fined by a police officer since it is definitely illegal to drive without a working brake light. Second of all, other drivers cannot see you very well in the dark. Without brake lights, it is impossible for them to know whether you are stopping or not, so accidents on the road are very likely.

Why are the brake lights not working but the tail lights are?

Blown out light bulbs are the most common reason for why the brake lights not working but the tail lights are. Remove the screws from the bulb lens (which you can access through the trunk or see your vehicle repair manual to get the exact location). Push the bulbs and turn them counterclockwise to remove from the socket.

Is it dangerous to drive with brake lights not working?

Driving at night with either brake lights or tail lights not working is dangerous for you and other drivers on the road. It takes a long time to notice when the brake lights not working but tail lights are or vice versa. It is so because you won’t know what is happening in the backside while driving until someone points it out.