B0099
Trunk/Liftgate Lock Circuit
2000-2003 BMW M5 E39 4.9L V8 S62
Low SeverityBodyGeneric (SAE)
Description
Malfunction in the trunk or liftgate lock/latch actuator circuit.
Symptoms
- Trunk will not lock or unlock
- Liftgate latch not releasing
- Remote trunk release not working
- Trunk ajar warning stays on
Common Causes
- Faulty trunk latch actuator
- Wiring damage in trunk lid
- Trunk release switch failure
- Latch mechanism jammed
- BCM output issue
Diagnostic Steps
- Test trunk release switch
- Apply direct power to latch actuator
- Inspect wiring in trunk lid hinge area
- Check for mechanical latch jam
- Test BCM trunk output
Repair Notes
Replace trunk latch actuator or repair wiring. Check hinge area wiring for fatigue damage.
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
- B0010Driver Side Airbag Deployment
- B0011Driver Side Airbag Deployment Circuit Open
- B0012Driver Side Airbag Deployment Circuit Short to Ground
- B0013Driver Side Airbag Deployment Circuit Short to Battery
B0099 on Other Vehicles
Common Questions
What does code B0099 mean on a 2000-2003 BMW M5 E39?
B0099 stands for "Trunk/Liftgate Lock Circuit". Malfunction in the trunk or liftgate lock/latch actuator circuit.
What are the symptoms of B0099 on a BMW M5 E39?
Common symptoms of B0099 include: Trunk will not lock or unlock, Liftgate latch not releasing, Remote trunk release not working, Trunk ajar warning stays on.
What causes B0099 on a 2000-2003 BMW M5 E39?
Common causes of B0099 include: Faulty trunk latch actuator, Wiring damage in trunk lid, Trunk release switch failure, Latch mechanism jammed, BCM output issue.