Transfer Box (VG)

Fault Code 2052

Control unit switched off due to excess temperature

NOTE: This fault maybe stored after extreme off-road driving. This does not necessarily mean a fault is present.

Diagnostic conditions
- Ignition on
- Internal transfer box control unit function test
- Engine running
- Selector lever position 'P'
- Engage longitudinal lock

Possible causes of fault
- 'Above upper limit': heavy demand on servo motor (mechanical stress)
- 'Above upper limit': mechanical wear of servo motor
- 'Above upper limit': transfer box control unit faulty

Affected pins
Transfer box control unit plug:
- Pin

Diagnosis/troubleshooting

NOTE:
- Visual inspection: In the next troubleshooting section, please check first that the affected 'pins' of the transfer box control unit plug connection and the 'pins' of the plug connections on the servo motor are neither damaged nor corroded. Remove any soiling or corrosion/oxidation. Replace damaged parts/wires.
- Control unit replacement: Before replacing the 'transfer box control unit', the ground connections, power supply and plug connections on the control unit must be checked as OK. Please observe the coding of the control unit. After the test drive, read out the fault memory again with the Porsche System Tester 1/ No. 9588. Additional causes of faults that could damage the 'transfer box control unit' should be detected and remedied.