GF91.29-P-3005TX Seat Calibration, Function

GF91.29-P-3005TX Seat Calibration, Function
- with CODE (242) Electrically adjustable front passenger seat with memory
- with CODE (275) Memory package (driver seat, steering column, mirrors)

The normalization is important for the assignment between the absolute position of the adjustment and the position sensed by the driver-side front seat adjustment control unit with memory (N32/1) or passenger-side front seat adjustment control unit with memory (N32/2). A normalization has to be carried out upon initial start-up or in denormalized condition. For the head restraint presetting and easy entry/exit feature functions (on driver seat only), an assignment is required between the absolute position of the adjustment and the position sensed by the driver-side or front passenger front seat adjustment control units with memory.

This assignment is produced by a calibration procedure in which the individual adjusters have to be moved to the following stop positions:
^ Fore/aft adjustment to the front-most stop
^ Inclination adjustment to the lower stop
^ Height adjustment to the lower stop
^ Backrest adjustment to the front-most stop
^ Head restraint adjustment to the uppermost stop

Normalization process (described on driver seat)
Press the left front seat adjustment switch group (S91/2) for the seat adjustment until the mechanical stop has been reached and hold depressed for an additional 250 ms. If normalization is successful, the driver-side front seat adjustment control unit with memory will shut off the drive motor after the mechanical stop has been detected.

Desynchronization
An adjustment is denormalized, if there is no signal from the Hall sensor or if the mechanical stop has been exceeded.

Re-normalizing
If an adjustment is normalized, it is re-normalized if the corresponding stop is detected again. A re-normalization via the left front seat adjustment switch group is only carried out at the point, at which the previous normalization was performed.