B0083low severityBody
Driver Seat Lumbar Motor Circuit
on 2002 BMW 525i 2.5L I6 M54 · RWD
What this code means
Malfunction in the driver seat lumbar support motor circuit.
Symptoms
- Lumbar support not adjusting
- No response from lumbar switch
- Motor noise but no movement
Common causes
- Faulty lumbar motor
- Switch failure
- Wiring damage
- Air bladder leak (pneumatic type)
Diagnostic steps
- Test lumbar switch
- Apply direct power to motor
- Inspect wiring
- Check air bladder if pneumatic system
Repair notes
Replace lumbar motor or switch. For pneumatic systems, check air bladder and pump.
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