Q: The dome and the rear brake lights are not working.

asked by on

The rear braking lights are not working, Also the interior courtesy light is not working. I checked all the fuses and they are all good. I think it has to be something that provides power to both units. Please help

My car has 134000 miles.
My car has an automatic transmission.

Hi there. It is very rare that these two circuits affect each other. It can be a failure in the SAM module if both of these problems started at the same time, but most of the time they are separate. Typically the interior lights stop working because they are bypassed or because there is a module issue.

I always check the dimmer first to make sure that the lights were not turned off. As for the rear brake lights, this is usually caused by a bad brake switch. This is a common failure on this vehicle. In some cases the SAM module will need to be tested to find further issues. If you need to have this looked at, consider YourMechanic, as a certified technician can come to your home or office to diagnose the brake light issue and follow through with repairs.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. The dome and the rear brake lights are not working.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Engine has spark and fuel but not starting.

Hi there. Check the fuel pump to see if its humming when you turn on the ignition. If the pump is not humming, then check the fuel pump relay and see if the relay is clicking on or not. If...

Q: My car was melting the igniction coil i found that it was the DME, fixed. now it is giving me code p0340/p1318 and wont start.

P1318 relates to spark plug voltage detection. This function might be integrated into the DME on a BMW. If not, there will be a module (VDM) and the code will typically refer to an open or shorted wiring harness. Diagnostic...

Q: Dome light turns on and off by itself while vehicle is turned off.

Hi there. Check the courtesy light switches on the doors to the vehicle. It seems that one or more switch may have a bad ground or a bad contact in the switch causing the courtesy light to come on while...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.