General notes

instrument panel test functions 

The test functions are displayed in the TFT display of the instrument panel. The test functions are used in service to check the encoding. The test functions are also an aid to troubleshooting without the diagnosis system.

Starting the test functions 

• Precondition: Terminal R on  , vehicle stationary, engine switched off.
• At terminal 15 on: Press and hold the reset button in the instrument cluster for 15 seconds until the test function appears (possibly confirm Check Control message first).
• Unlock the blocked test functions with test function 4.
• Unlock by inputting the checksum of the last 5 figures of the vehicle identification number using the reset button.

Terminating the test function 

• Terminal 15 or R on