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Home >> BMW >> 2011 >> 335i 2D Convertible, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 38 (Seats - Repair - E90) >> Front Seat, Sports, Manual >> 52 15 400 Replacing seat cover for left or right front seat (sport/manual)

52 15 400 Replacing seat cover for left or right front seat (sport/manual)

WARNING: This page is about a different variant/trim than selected.

Special tools required: 

Necessary preliminary tasks 

US/CDN front passenger seat (with OC3 mat) only: 

WARNING: When replacing seat cover:
If seat cover is defective, seat cover and padding with OC3 mat must be replaced together.
New seat cover is supplied with padding, OC3 mat and if necessary seat heating.
When replacing padding or OC3 mat: 
If OC3 mat or padding is defective, both parts must be replaced together.
These must be fitted with the seat cover from the car.
IMPORTANT: The OC3 mat must be enabled after each installation operation.

Enabling seat occupancy detector (OC3 mat): 

WARNING: US/CDN front passenger seat (with OC3 mat) only:
To avoid damaging the OC3 mat, it is essential to carry out the following operations with extra care.

Only when replacing OC3 mat with padding: 

OC3 mat (1) is secured on the left and right sides in the marked area with a longitudinal trim wire for transportation.

Carefully remove adhesive tape (2).

Fig 1: Removing Adhesive Tape
G09839831Courtesy of BMW OF NORTH AMERICA, INC.

Removing transportation lock: 

Carefully release retainers in marked area on left and right from longitudinal trim wires (1).

IMPORTANT: Remove all remainders of retainers from padding and OC3 mat.
Fig 2: Identifying Longitudinal Trim Wires
G09839832Courtesy of BMW OF NORTH AMERICA, INC.

Lever out clips (1).

Remove seat trim (2) downwards.

Installation: 

Replace faulty clips (1).

Seat trim (2) must not be damaged.

Fig 3: Removing Seat Trim Downwards
G09839833Courtesy of BMW OF NORTH AMERICA, INC.

Version with seat heating and/or with seat occupancy detector (OC3 mat) only: 

Unlock plug connection (1) for seat heating and disconnect.

Fig 4: Unlocking Plug Connection For Seat Heating
G09839834Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect cable straps.

Release wiring harness (2) from cable holders on seat mechanism.

IMPORTANT: Feed the wiring harness carefully through the seat and backrest mechanism as the edges of the frame can be sharp.

Release screw (1).

Remove trim (2) from inside of seat.

Fig 5: Removing Trim From Inside Of Seat
G09839835Courtesy of BMW OF NORTH AMERICA, INC.

Lever clip (1) out of seat cover on left and right.

Installation: 

If necessary, replace faulty clip.

Fig 6: Identifying Seat Cover Lever Clip
G09839836Courtesy of BMW OF NORTH AMERICA, INC.

Detach seat cover (1) from seat frame.

Fig 7: Disconnecting Seat Cover From Seat Frame
G09839837Courtesy of BMW OF NORTH AMERICA, INC.

Pull out cover welt (1) completely from seat frame (2).

Fig 8: Pulling Out Cover Welt Completely From Seat Frame
G09839838Courtesy of BMW OF NORTH AMERICA, INC.

Remove seat cover (1) with padding towards front/top.

Fig 9: Removing Seat Cover With Padding Towards Front/Top
G09839839Courtesy of BMW OF NORTH AMERICA, INC.

Version with seat heating and/or with seat occupancy detector (OC3 mat): 

Release the corresponding plug connections depending on the version and disconnect.

Pull seat cover (1) with padding forward a little and feed wiring harness (2) out.

Remove seat cover (1) with padding towards front/top.

Fig 10: Identifying Seat Cover And Feeding Wiring Harness Out
G09839840Courtesy of BMW OF NORTH AMERICA, INC.

Release all retainers in marked area.

Fig 11: Identifying Retainer Marked Area
G09839841Courtesy of BMW OF NORTH AMERICA, INC.

Detach all retainers in side area from longitudinal wires.

Pull trim wires forward out of seat cover.

Carefully fold back seat cover and release retainers from cross-wires.

Remove seat cover from padding.

IMPORTANT: Remove all remnants of clips from seat cover and padding.
Fig 12: Identifying Seat Cover Trim Wires
G09839842Courtesy of BMW OF NORTH AMERICA, INC.

Replacement only: 

Pull trim wires out of seat cover.

Cut new seat cover to size and insert trim wires.

Fig 13: Identifying Trim Wire Insertion Position
G09839843Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Bend new retainers (2) closed with special tool 52 0 050 .

Fig 14: Bending Retainers Closed With Special Tool
G09839844Courtesy of BMW OF NORTH AMERICA, INC.