B0084
Passenger Seat Lumbar Motor Circuit
2019-2024 BMW 3 Series G20 2.0L I4 Turbo B48
Low SeverityBodyGeneric (SAE)
Description
Malfunction in the passenger seat lumbar support motor circuit.
Symptoms
- Passenger lumbar not adjusting
- No response from switch
- Motor running but no movement
Common Causes
- Faulty motor
- Switch failure
- Wiring issue
- Mechanical linkage broken
Diagnostic Steps
- Test switch
- Direct-power motor
- Inspect wiring
- Check mechanical linkage
Repair Notes
Replace lumbar motor, switch, or repair linkage.
Related Codes
Other Body Codes
- B0001Driver Frontal Stage 1 Deployment Control
- B0002Driver Frontal Stage 2 Deployment Control
- B0003Passenger Frontal Stage 1 Deployment Control
- B0004Passenger Frontal Stage 2 Deployment Control
- B0005Driver Knee Airbag Deployment Circuit
- B0006Passenger Knee Airbag Deployment Circuit
- B0007Rear Left Side Airbag Deployment Circuit
- B0008Rear Right Side Airbag Deployment Circuit
- B0009Rear Center Airbag Deployment Circuit
- B0010Driver Side Airbag Deployment
B0084 on Other Vehicles
Common Questions
What does code B0084 mean on a 2019-2024 BMW 3 Series G20?
B0084 stands for "Passenger Seat Lumbar Motor Circuit". Malfunction in the passenger seat lumbar support motor circuit.
What are the symptoms of B0084 on a BMW 3 Series G20?
Common symptoms of B0084 include: Passenger lumbar not adjusting, No response from switch, Motor running but no movement.
What causes B0084 on a 2019-2024 BMW 3 Series G20?
Common causes of B0084 include: Faulty motor, Switch failure, Wiring issue, Mechanical linkage broken.