Description

A fault has occurred while the transmission control unit was writing data into the gear range selector. The transmission control unit has no authorization for the write access.

Effects on the driving operation

Modifications of gear range selector specifications could not be finished successfully.

Possible causes

CAN communication error

Software fault: wrong transmission control unit software.

Place of action

No description available.

Instruction

Check whether the two components gear range selector and transmission control unit are compatible with each other.

Setting conditions of the event

No description available.

Test conditions of the event

No description available.

Final function check

If the defective component cannot be clearly identified, you should try to reproduce the fault:

• Reinstall the component in the vehicle.
• Test the function.

After the fault has been eliminated, the following steps have to be carried out:

• Conduct a test drive with function check.
• Read out the fault memory.
• Check the transmission for leaks.
• Perform a final visual inspection.

These steps are necessary to ensure the entire vehicle functions.

See also:

		Aftersales service index