Test Functions

Test Functions
The test functions are used by service mechanics to check the coding. The test functions are also tools for fault finding without a diagnostic tester. The test functions are only shown in the LO display of the instrument cluster. The test functions are activated by pressing the left control button in the instrument cluster (S/R, 5 seconds) with terminal R or terminal 15 "ON".
In addition, the test functions can still be called up by pressing the left control button S/R for Set/Reset) in the instrument cluster with simultaneous activation of terminal R.