Service Information

Operating Hours Counters

The HUD incorporates operating hours counters for both the HUD and the LED array. When the HUD is replaced, the
operating hours counter must be initialized at 0.

Windshield

Bear in mind when replacing the E60 or E63 windshield that the HUD requires a special windshield.

Replacing Head-Up Display

A faulty HUD must be completely replaced. A new HUD must be adjusted once it has been installed. The CID must be removed for this adjustment work.
This adjustment is performed at a screw on the supporting tube. This screw incorporates an eccentric which serves to adjust the angle of the HUD in relation to the windshield.
A special tool is required for adjustment.

Test Functions





Different functions can be selected in service without the Service Tester.
Press the HUD button for 30 s to call up the test functions. As soon as the first test function is displayed, further test functions can be called up by briefly pressing the HUD button. Press the HUD button for more than 2 s to terminate the function.
Function selection:
^ Identification
^ System test
^ Unlocking
^ Rain/light sensor
^ Road speed
^ Operating voltage
^ Language
^ Unit
^ Car & key memory
^ Reset

Image Defects





Incorrect installation of the HUD or of the windshield may result in faulty HUD projections.

The incidence of light onto the windshield or into the HUD in an inconvenient situation causes the image to fade. Excessive heat in the HUD will also cause the image to fade.