Operation (Without SMF Seat Memory, Driver)

Operation

Manual adjustment of drives
The adjustment switches in the switch block are used for adjusting the seat manually. The adjustment switches are located on the sides of the seats facing the door.

The following adjustments can be made with these switches:
- Seat fore/aft adjustment
- Seat height adjustment
- Backrest angle adjustment (not on E52)
- Seat angle adjustment
- Backrest head adjustment (for E53 comfort seat only)
- Head restraint height adjustment (only on E46 Convertible, comfort seat E53 or E64)

An additional switch for the Easy Entry is fitted in the E64 in the seat, enabling rapid forward / back adjustment of the seat.

Seat adjustment components
- Switch block (load-switching)
- Adjusting motors

Detection of end stops
In order to avoid unnecessary engine load and of the ripple count module, there is automatic detection of the adjustment range limits.

Should a block be detected several times in the same position, the detected position value is interpreted as the end stop. Any further adjustment is terminated before this limit is reached.

An incorrectly detected end stop (e.g. blocking of the seats caused by objects lying around) can be overridden after removal of the blocking, by activating the manual adjustment switch.