System components

The system consists of the following components:

Lumbar support

Motor for lumbar support (lumbar pump) Switch for seat adjustment Electric motor for seat adjustment Electric motor for front height adjustment Electric motor for rear height adjustment Electric motor for backrest adjustment Control module for memory seat adjustment Switch for memory seat adjustment Switch for rearview mirrors (door mirrors) Changeover switch for rearview mirrors

Right and left rearview mirrors (door mirrors)

The system enables the following system components to be adjusted individually:

Front seat height

Rear seat height

Backrest angle

Left rearview mirror

Right rearview mirror

Lumbar support

Fore-and-aft adjustment

Storing the positions

1. Adjust the rearview mirrors, seat height, backrest angle and lumbar support to

2. Hold down switch M and push one of the switches for memory seat adjustment (1, 2 or 3) at the same time.

The positions are now stored under the number Diagnosis

The following components are monitored by the system:

Lumbar pressure sensor (regulating switch)

Potentiometer voltage of both rearview

Hall-effect sensor for backrest adjustment Hall-effect sensor for fore-and-aft adjustment Hall-effect sensor for height adjustment

Functioning of the control module (EPROM, A/D converter, main relay)

Switch for memory seat adjustment and switch for seat adjustment

When the switch for memory seat adjustment or the switch for seat adjustment are actuated, the faulty component is stored in the fault memory. In this case the word present also appears on the screen, e.g.:

"Open circuit present in Hall-effect sensor for

If the cause of the fault is eliminated, then the switch for memory seat adjustment or the switch for seat adjustment must be actuated again. If the cause of the fault has really been eliminated, the text in the fault memory changes from present to not present.

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