Fault-tracing information

Condition 

• Diagnostic trouble codes (DTCs) missing
• One or more doors does not lock/unlock when the central locking system is operated.

Possible Source 

• Open-circuit in the wiring for the central locking motors
• Open-circuit in the power supply for the central locking motors to the control module
• The fuse for the central locking motors has blown
• Fault in the central locking motors.