Locking and Unlocking Test Functions

Locking and Unlocking Test Functions
Only the first two test functions are freely accessible. All test functions after the third test function are locked. Unlocking can only be carried out removed by means of test function 19. In test function 19, the display switches in intervals of 1 second from L_on to L_off (Lock on and Lock off). The test functions are unlocked or locked by pressing the left control button (S/R for Set/Reset).
If the left control button (S/R for Set/Reset) in the instrument cluster is pressed while L_off is displayed, the test functions remain unlocked or are unlocked. The display jumps to test function 0.
If the left control button (S/R for Set/Reset) in the instrument cluster is pressed while L_on is displayed, the test functions remain locked or are locked. The test functions can be locked by means of test function 19.