A/T - M DCT Warning Lamp ON/Codes 5A87/5A81

SI B28 01 09
Double-clutch Transmission with Drivelogic

March 2009
Technical Service

SUBJECT
M3 with M DCT Gearbox Warning Lamp with FC 5A87/5A81

MODEL
E90, E92, E93 M3 with S65 and M DCT transmission produced up to 03/09

SITUATION
The customer may complain that intermittently the red "Gearbox Emergency Program" indicator is displayed in the cluster or in the CC. The fault codes 5A87 ("Internal Transmission EEPROM data") or 5A81 ("5V Internal voltage failure") are stored in the DCT transmission control module.

The vehicle's drivability is not affected by this condition.

CAUSE
Erroneous faults caused by the diagnostic software error in the DCT transmission control module

SOLUTION
In case fault codes 5A87/5A81 are stored, clear the DCT fault memory and allow the vehicle to enter sleep mode. Stored fault codes should be erased. Release the vehicle to the customer.

In the unlikely event that the fault codes and the transmission warning lamp return after performing the above procedure, contact Getrag TeileClearing via the PuMA case titled "M3 M DCT FC 5A87/5A81".

The improved DCT software, which eliminates erroneous faults 5A87/5A81, is planned for release in March 2009 (ISTA/P 2.33.0).

WARRANTY INFORMATION
For information only





Disclaimer