Internal test
â–¶ How to fix
Spare parts program the control unit. Turn the key to the drive position so that the checksum is calculated.Renew the instrument cluster.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
The calculated checksum and the saved checksum do not agree.This check is carried out when the key is turned to the drive position.
Possible cause
Software download for the database or for the program is interrupted.Checksum not calculated after download of new EE parameters.Flash memory damage.