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Home >> BMW >> 2016 >> Z4 sDrive35is >> Repair and Diagnosis >> External Pages >> Different car >> Section 397 (Airbag, Audio, Navigation And Anti-Theft - Repair) >> 6577 Airbag Triggering Unit, Diagnosis Unit >> 65 77 600 Replacing sensor mat for front passenger seat occupancy detector

65 77 600 Replacing sensor mat for front passenger seat occupancy detector

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WARNING: Note AIRBAG SAFETY INSTRUCTIONS !
Incorrect handling can activate airbag and cause injury.
WARNING: US/CDN front passenger seat (with OC3 mat) only: 
A defective OC3 mat may only be replaced complete with the padding and the seat cover.
New OC3 mat is supplied with padding, seat cover and if necessary seat heating.
After fitting, the OC3 mat must be enabled with the diagnosis system.
Individual parts not available.

Release seat occupancy detector: 

Necessary preliminary tasks 

Disconnect plug connection (1).

IMPORTANT: To prevent the seat occupancy detector electronics box from slipping, do not pull too strongly on the cable.
Fig 1: Identifying Plug Connection
G04753741Courtesy of BMW OF NORTH AMERICA, INC.

Cut front sticking surface (4) in area on sensor mat (1) with cutter knife or heavy-duty scalpel from foam without damaging the foam and the sensor mat.

If necessary, also cut away deviating sticking points from seat padding without incurring damage.

Remove sensor mat (1) and feed out electric lead.

Fig 2: Identifying Sensor Mat, Front Sticking Surface And Electronic Box
G06912199Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Observe installation sequence:

IMPORTANT: In order to guarantee the function and fastening (adhesive strength) at the sticking surfaces of sensor mat (1), the foam must not show any traces of damage.
Replace the foam if it is hardened or damaged particularly in the area of the sticking surfaces.
To prevent the electronics box (2) from slipping, do not pull cable too strongly through hole penetration (5).