B0240low severityBody
Sunroof Motor Circuit
on 2002 Mercedes-Benz SL 3.0L I6 · RWD
What this code means
Malfunction in the sunroof/moonroof motor circuit. The sunroof does not open, close, or tilt.
Symptoms
- Sunroof does not move
- Sunroof opens but will not close
- Motor noise but no movement
- Sunroof switch unresponsive
Common causes
- Faulty sunroof motor
- Sunroof track obstruction
- Switch failure
- Wiring damage in headliner
- Sunroof off track
Diagnostic steps
- Check sunroof fuse
- Test sunroof switch
- Apply direct power to motor
- Inspect sunroof tracks for debris
- Check if panel is off track
Repair notes
Replace sunroof motor or clear track obstruction. Re-initialize sunroof if it has lost calibration.
Other Body codes on this vehicle
B0001
Driver Frontal Stage 1 Deployment Control
B0002
Driver Frontal Stage 2 Deployment Control
B0003
Passenger Frontal Stage 1 Deployment Control
B0004
Passenger Frontal Stage 2 Deployment Control
B0005
Driver Knee Airbag Deployment Circuit
B0006
Passenger Knee Airbag Deployment Circuit
B0010
Driver Side Airbag Deployment
B0011
Driver Side Airbag Deployment Circuit Open
B0012
Driver Side Airbag Deployment Circuit Short to Ground
B0013
Driver Side Airbag Deployment Circuit Short to Battery