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Home >> BMW >> 1997 >> 540i Standard >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Body Equipment - Repair >> Front door Locks, handles, fittings >> 51 21 130 Removing and installing or replacing lock on left or right front door

51 21 130 Removing and installing or replacing lock on left or right front door

(if necessary with lock cylinder) Remove door lock, refer to 51 21 090 REMOVING AND INSTALLING/REPLACING DOOR LOCK ON LEFT OR RIGHT FRONT DOOR 

Only Version up to 5/96:

Unfasten nuts with washers. Remove locking unit (1) (carrier for outside door handle).

Installation: 

  1. Install screws with flat surfaces pointing towards one another.
Fig 1: Installing Screws With Flat Surfaces Pointing Towards One Another
G03153592Courtesy of BMW OF NORTH AMERICA, INC.

Introduction: ongoing from 5/96:

Unfasten screws (1) and remove locking unit (2) (carrier for outside door handle).

Fig 2: Unfastening Screws And Removing Locking Unit
G03153593Courtesy of BMW OF NORTH AMERICA, INC.

Only replace:

Unlock cover (1) with screwdriver through aperture (2) and remove.

Fig 3: Unlocking Cover With Screwdriver Through Aperture
G03153594Courtesy of BMW OF NORTH AMERICA, INC.

Only replace:

Disconnect Bowden cable (1) from locking unit.

Fig 4: Disconnecting Bowden Cable From Locking Unit
G03153595Courtesy of BMW OF NORTH AMERICA, INC.