Enabling And Disabling The Test Functions

Some test functions are not freely accessible, but rather have to be enabled.

Enabling is only possible in the test function "Enable".

An Enabling is effected by entering the sum of the last 5 digits of the vehicle identification number.

Test functions are disabled again when they are ended.

A test function is, e.g. the system test, which comprises the following sequence:

The projection display cover panel is folded out of the beam.
The light source lights up with maximum brightness.
A series of test patterns appears in the head-up display to check for optical errors. The test patterns make it possible to test readability (focus) and color reproduction.

Test patterns contain: Lines, colors, characters and symbols
The light source is deactivated.
The projection display cover panel is folded into of the beam.

The test functions are terminated by the following conditions: