C0500
Transfer Case Control Module Malfunction
2001-2003 BMW 525i E39 2.5L I6 🇨🇦
High SeverityChassis
Description
Internal fault in the transfer case control module that manages 4WD/AWD operation.
Symptoms
- 4WD warning light
- Service 4WD message
- Cannot shift between 2WD and 4WD
- Transfer case stuck in current mode
Common Causes
- Module internal failure
- Module power supply fault
- Software error
- CAN communication loss
- Overheated module
Diagnostic Steps
- Check module power supply and ground
- Scan for CAN communication codes
- Check module connector for corrosion
- Attempt module reset
- Check for software updates
Repair Notes
Replace transfer case control module. Reprogram and calibrate after installation.
Related Codes
Other Chassis Codes
- C0021LF Wheel Speed Sensor Range/Performance
- C0022RF Wheel Speed Sensor Range/Performance
- C0023LR Wheel Speed Sensor Range/Performance
- C0024RR Wheel Speed Sensor Range/Performance
- C0025LF Wheel Speed Sensor Circuit Intermittent
- C0026RF Wheel Speed Sensor Circuit Intermittent
- C0027LR Wheel Speed Sensor Circuit Intermittent
- C0028RR Wheel Speed Sensor Circuit Intermittent
- C0035Left Front Wheel Speed Sensor Circuit
- C0036Left Front Wheel Speed Signal Erratic
C0500 on Other Vehicles
Common Questions
What does code C0500 mean on a 2001-2003 BMW 525i E39?
C0500 stands for "Transfer Case Control Module Malfunction". Internal fault in the transfer case control module that manages 4WD/AWD operation.
What are the symptoms of C0500 on a BMW 525i E39?
Common symptoms of C0500 include: 4WD warning light, Service 4WD message, Cannot shift between 2WD and 4WD, Transfer case stuck in current mode.
What causes C0500 on a 2001-2003 BMW 525i E39?
Common causes of C0500 include: Module internal failure, Module power supply fault, Software error, CAN communication loss, Overheated module.