51 21 125 Removing and installing/replacing carrier for left or right outside door handle with lock cylinder (security)

Necessary preliminary tasks: 

• Remove DOOR WINDOW GLASS 
• Remove POWER WINDOW UNIT 
• Remove COVER ON OUTSIDE HANDLE 
• Disconnect BOWDEN CABLE FROM DOOR LOCK 

Driver's side only: 

• Remove DOOR LOCK  on front door

Remove protective mat upper section (1).

Tightening torque: see 22AZ in 51 71 SEALS AND LOOSE BODY PARTS

Installation: 

Shims for fastening protective mat must not jam between screw-in sleeve and screw head.

Fig 1: Identifying Protective Mat Upper Section

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Remove inner door lock protective cover (1), release screws (2) and (3) to do so.

Tightening torque: see 22AZ in 51 71 SEALS AND LOOSE BODY PARTS

Fig 2: Identifying Inner Door Lock Protective Cover And Screws

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Overview of removed door lock protective cover (1) and protective mat upper section (2).

Fig 3: Overview Of Removed Door Lock Protective Cover (1) And Protective Mat Upper Section (2).

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Unlock catches (2) on carrier (1).

Press lock cylinder (5) behind door outer skin (3).

Fig 4: Identifying Catches, Carrier, Lock Cylinder And Door Outer Skin

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If necessary, disconnect plug on CA module.

Pull carrier (3) towards rear/top until screw (1) of sheet metal slot (2) is free.

Remove carrier (3) for outside door handle.

Fig 5: Removing Carrier For Outside Door Handle

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Installation: 

Seals (1) on carrier (3) must not be damaged.

Fig 6: Identifying Seals, Carrier & Water Drainage Channel

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Replacement: 

• Remove lock cylinder completely from front door
• Remove BOWDEN CABLE FOR OUTSIDE DOOR HANDLE ON FRONT DOOR 

Version with Comfort Access/CA: 

• Carry out PROGRAMMING/ CODING