C0500high severityChassis
Transfer Case Control Module Malfunction
on 2016 Lincoln MKX 3.7L V6 · AWD
What this code means
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.
🔌 Don't have a code reader?
Any of these will read and clear this code — pick by how deep you want to go.
Bluetooth code reader (~$25)
Veepeak OBDCheck BLE →
Pairs with your phone — reads and clears codes, live data.
Serious DIY (~$100)
BlueDriver Pro →
Enhanced codes (ABS, airbag, TPMS) plus repair reports.
Shop-grade tablet (~$300+)
Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
As an Amazon Associate, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.
Other Chassis codes on this vehicle
C0021
LF Wheel Speed Sensor Range/Performance
C0021
LF Wheel Speed Sensor Range/Performance
C0022
RF Wheel Speed Sensor Range/Performance
C0022
RF Wheel Speed Sensor Range/Performance
C0023
LR Wheel Speed Sensor Range/Performance
C0023
LR Wheel Speed Sensor Range/Performance
C0024
RR Wheel Speed Sensor Range/Performance
C0024
RR Wheel Speed Sensor Range/Performance
C0025
LF Wheel Speed Sensor Circuit Intermittent
C0025
LF Wheel Speed Sensor Circuit Intermittent