Interior - Raised Spot At Rear Of Seat Cushion
SI B52 06 08Seats
August 2008
Technical Service
SUBJECT
Raised Area on the Seat Bottom
MODEL
E82, E88 (1 Series) equipped with Seat Heating (SA 494)
E90, E91, E92, E93 (3 Series) equipped with Seat Heating (SA 494)
SITUATION
A raised spot or bump may be seen or felt at the rear of
the seat bottom (1).
CAUSE
The wire harness for the seat heater mat is loose. This allows the harness to press up against the seat cover just before it's routed to the underside of the seat.
CORRECTION
Secure the seat heater wire harness to the seat base spring.
PROCEDURE
1. Place the seat in the highest and forwardmost position, in order to locate the correct harness.
2. Identify the wiring harness lead for the seat heater (1). When gently tugging on the harness, the bump in the seat will flatten.
NOTE:
For clarity, the illustration is of the seat removed from a 1 Series, although it is not necessary to remove the seat to perform the repair. When performing this procedure on the passenger side seat, be sure not to disturb the OC3 mat (gray) harness.
3. Secure the seat heater wiring harness (1) to the) to the seat base spring with a wire tie (2). Secure the harness with a second wire tie (3) to the white plastic clip adjacent to the wire harness push pin.
NOTE:
Do not pull the harness too tight when securing the wire tie, as this would create a depression where the bump was previously seen.
4. Repeat steps 1-3 for the opposite side seat.
WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty
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