Removing and installing motors and senders for height/longitudinal adjustment — AUDI

Front and rear seat height adjustment mechanism moved to highest position.
Seat removed

Notes:

Moving seat mechanically forwards and backwards to remove in the event of defective longitudinal adjustment mechanism => Page
72-52
.
After removing seat raising can be achieved by connecting height adjustment motors directly to a voltage source. Connector to motor must be detached.
Voltage must not be applied to control unit for seat adjustment with memory.
If seat cannot be raised due to defective height adjustment motor, cut through appropriate drive shaft with cut-off grinder (remove cover seat when doing so) and remove motor. Replace drive shaft that has been cut.

Removing

Unscrew the 4 bolts -arrows- for seat bracket.
Detach bracket to seat frame.

Screw out nuts -1- and -2- at motors for front/rear height adjustment.
Cut open cable tie.
Detach connectors.
Use plastic-headed hammer to drive runner outwards -arrows- on height adjustment motor side.
Pull motor for front/rear height adjustment off drive shaft.

Press sender for front/rear height adjustment out of clamp at motor.
Detach motor for longitudinal adjustment.
Detach connectors.
Detach drive shaft and pull motor for longitudinal adjustment off drive shaft.
Press sender for longitudinal adjustment out of clamp at motor.

Installing

Note:

Ensure that the two runners are parallel.

Refer to installation position (lug) when fitting new sender.
Attach motor with drive shaft for longitudinal adjustment at runner.
Measure fore-and-aft setting of runner on motor side and adjust opposite runner to same dimension.

Attach motor for front and rear height adjustment to drive shafts.
Position both runners on seat frame and insert guide lugs into holes at seat frame.
Measure height adjustment setting at front and rear of one runner and adjust opposite runner to same dimensions.

Attach runner to drive shafts -1- in this position and at the same time insert motor securing pins -2-.
Measure parallel adjustment again.
Screw runner to seat frame to 20 Nm.
Screw on motor for longitudinal adjustment to 10 Nm.

Screw on (6 Nm) height adjustment motors.

Note:

Synchronisation of sender for longitudinal adjustment/height adjustment senders involves completely traversing entire fore-and-aft, front height and rear height adjustment range.