Front doors

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Remove/install door lining on front door

Shown on model 220 up to VIN 316716 (pre-facelift):

W220 Remove install door lining on front door.png
  • 1 - Trim strip
  • 2 - Covering
  • 3 - Door handle cover
  • 4 - Door lining
  • 5 - Cover on switch group
  • 6 - Screw
  • 7 - Lock rosette
  • 8 - Inner door panel
  • 9 - Fastening clips
  • 10 - Screw
  • 11 - Screw
  • 12 - Cover
  • 13 - Screw

Shown on model 220 up to VIN 316716 (pre-facelift):

W220 Remove install door lining on front door up to VIN 316716.jpg
  • 1 - Trim strip
  • 2 - Covering
  • 3 - Door handle cover
  • 15 - Bolts
  • 17 - Cap

Shown on model 220 As of VIN 316717 (facelift):

W220 Remove install door lining on front door as of VIN 316717.jpg
  • 1 - Trim strip
  • 2 - Covering
  • 15 - Bolts
  • 16 - Door opener cover


Shown on model 220 up to VIN 316716 (pre-facelift):

W220 Remove install door lining on front door up to VIN 316716 DCM.jpg
  • 2 - Covering
  • N69/1 - Left front door control unit
  • N69/2 - Right front door control unit
  1. Press trim strip (1) out of covering (2)
  2. Up to VIN 316716 (pre-facelift):
    1. Remove door handle cover (3) from door handle
    2. Unclip cap (17)
  3. As of VIN 316717 (facelift):
    1. Remove door opener cover (16)
  4. Remove screws (15)
  5. Press covering (2) off of door lining (2)
  6. Disconnect electrical connector from left front door control unit (N69/1) and right front door control unit (N69/2). For this purpose, remove covering (2).
  7. Unclip cover on switch group (5) with switch group from door lining (4). For this purpose, pull cover on switch group (5) downward at bottom edge until cover on switch group (5) can be removed.
  8. Unscrew bolt (6) from round cover plate (7). For this purpose, remove round cover plate (7).
  9. Unscrew bolts (10, 11) from inner door handle
  10. Remove screw (13). For this purpose, remove cover (12).
  11. Press door lining (4) off of inner door panel (8). Move mounting wedge (14) directly to fastening clips (9) and ensure that the retainer tabs on the fastening clip (9) do not tear out of the door lining (4).
  12. Lift door lining (4) at top on sealing rail out of retaining clips and simultaneously pull away from inner door panel (8). Installation: Remove fastening clips remaining on inner door panel (8) and install.
  13. Unhook Bowden cable from inside door opener
  14. Disconnect electrical connectors from door lining (4) and lay down door lining (4)
  15. Check door foil and fastening clips (9). Installation: Replace damaged door foil and fastening clips (9).
  16. Install in the reverse order
Front door panel removal (facelift).
Front door panel removal (pre-facelift).
Front left door with panelling removed.
KEYLESS-GO antenna.
Front left door wiring.
Front left door panelling inside.
Latch guide and handle illumination module.

Removing and installing front door lock

W220 Removing and installing front door lock 1.png
  • 1 - Bowden cable
  • 2 - Locking bar
  • 5 - CL cable
  • 6 - Door lock
  • 9 - Window lift guide rail
  • 10 - Bolt
  • 11 - Bolt
  • Arrow - blind rivet
W220 Removing and installing front door lock 2.png
  • 1 - Bowden cable
  • 2 - Locking bar
  • 3 - Unlocking bar
  • 4 - Fuse
  • 6 - Door lock
  • 8 - Bracket
  • 11 - Screws

Removing:

  1. Remove door liner on front door
  2. Remove crank operated window on front door
  3. Unhook Bowden cable (1) for inside door opener onto door lock (6) and remove. Unclip holder (8) on lock.
  4. Open retainer (4) for unlocking bar (3).
  5. Press IRCL line (5) off door lock IRCL element
  6. Drill out blind rivets (arrows). Use 4.8 mm dia. drill for drilling out, taking care not to damage the inner door panel. Drive out remains of rivets with suitable drift. Remove remains of rivets and swarf from door, danger of rusting.
  7. Unhook window lift guide rail (9) from inner door panel and push to one side
  8. Unscrew lock fixing screws (11)
  9. Unscrew lock cover screw (10). Lock cover is permanently attached to the door lock and cannot be removed separately.
  10. Remove door lock (6) via access cover

Installing:

  1. Insert door lock (6) via access cover
  2. Screw in lock fixing screws (11)
  3. Screw in and tighten screw (10) for lock cover
  4. Hook window lift guide rail (9) onto inner door panel with the two mounting hooks
  5. Rivet window lift guide rail (9) flush with inner door panel with 4.8 mm blind rivets (arrows)
  6. Connect central locking line (5) to central locking element on door lock
  7. Close retainer (4) for unlocking bar (3). With retainer (4) open, push unlocking bar upwards until resistance can be felt. Then close retainer again
  8. Hang Bowden cable (1) onto door lock (6). Clip holder (8) to door lock.
  9. Install crank window
  10. Adjust crank window on front door
  11. Check clearance and correct if necessary
  12. Carry out operational check
  13. Fix sound deadener to inner door panel
  14. Install door liner on front door
  • Screw on door lock: 10 Nm
  • Front door test values: Clearance: 2(+-1)mm
Door lock actuator replacement.
Door lock actuator repair.
Front left door lock removed.
Front left door lock.
Front left door lock.
Door handle spring mechanism.
Door unlocking bar.
Door unlocking bar connected (front right side).
Door lock reinstalled.


Removing and installing exterior door handle on front door

W220 Removing and installing exterior door handle on front door.png
  • 1 - Handle
  • 2 - Lock cylinder guide
  • 3 - Rotating rod
  • 4 - Base
  • 5 - Base
  • 6 - Torx screw
  • 7 - Allen screw, 6
  • 8 - Hinge strap
  • 9 - Screw
  • 10 - Base
  • 11 - Control lever
  • X8/13 - Driver's door infrared receiver connector
W220 Removing and installing exterior door handle on front door 2.png W220 Removing and installing exterior door handle on front door 3.png
  • 2 - Lock cylinder guide
  • 3 - Rotating rod
  • 6 - Torx screw
  • 13 - Opening for Torx screw
  • 14 - Door lock
  • X8/13 - Driver's door infrared receiver connector

Removal:

  1. Remove cap from installation opening (13) narrow side of door
  2. Unscrew Torx screw (6). Remove Torx screw (6). Secure against falling down.
  3. Remove guide (2). Slightly pivot guide (2) toward rear and then pull out toward outside. Simultaneously pull out handle (1) slightly. Avoid damaging paint.
  4. Disconnect driver's door infrared receiver connector (X8/13)
  5. Remove handle (1) with bases (4) and (5). Pull handle (1) with bases (4) and (5) out of hinge strap (8) toward rear.
  6. Remove door liner
  7. Pull off insulating mat in area of door lock
  8. Remove hinge strap (8). First open retainer for release handle, unscrew screw (9) from handle recess and remove hinge strap (8) with release handle through installation opening in inner door panel.

Installation:

  1. Install hinge strap (8). Insert hinge strap (8) with release handle through installation opening in inner door panel and insert release handle into control lever retainer. Turn screw (9) into handle recess.
  2. Install handle (1) in hinge strap (8) together with bases (4) and (5). Ensure that the lever on the handle slides behind the actuation lever (11) on the bracket so that the lock can be unlocked.
  3. Insert guide (2). Simultaneously insert driver's door infrared receiver connector (X8/13). When inserting the guide (2) ensure that the rotating rod (3) is moved into the door lock (14) in the correct position.
  4. Tighten guide with Torx screw (6). Secure Torx screw (6) against falling down.
  5. Adjust clearance between handle (1) and actuation lever (12). Press release handle with retainer opened up until resistance can be felt. Then lock retainer.
  6. Check clearance. Pull handle (1) until resistance can be felt clearly.
  7. Glue on insulating mat. Replace damaged insulating mat.
  8. Install door liner
  9. Insert installation opening (13) cap into narrow side of door
  10. Check for proper function
  • Screw for front door handle: 3 Nm
  • Adjustment values for side door: Clearance: 2(+-1)mm

Removing and installing exterior door handle on front door (KEYLESS-GO)

W220 Removing and installing exterior door handle on front door keyless-go.jpg
  • 1 - Handle
  • 2 - Lock cylinder guide
  • 3 - Rotating rod
  • 4 - Base
  • 5 - Base
  • 6 - Torx screw
  • 7 - Allen screw, 6
  • 8 - Hinge strap
  • 9 - Screw
  • 10 - Base
  • 11 - Control lever
  • X8/13 - Driver's door infrared receiver connector
  • S47x1 - Capacitive sensor and push contact connector
  • S48x1 - Capacitive sensor and push contact connector
W220 Removing and installing exterior door handle on front door 2.png W220 Removing and installing exterior door handle on front door 3.png
  • 2 - Lock cylinder guide
  • 3 - Rotating rod
  • 6 - Torx screw
  • 13 - Opening for Torx screw
  • 14 - Door lock
  • X8/13 - Driver's door infrared receiver connector
W220 Removing and installing exterior door handle on front door keyless-go 2.jpg
  • X35/1 - Left door separation point
  • X35/2 - Right door separation point
  • S47x1 - Capacitive sensor and push contact connector
  • S48x1 - Capacitive sensor and push contact connector


Removal:

  1. Remove cap from installation opening (13) narrow side of door
  2. Unscrew Torx screw (6). Remove Torx screw (6). Secure against falling down.
  3. Remove guide (2). Slightly pivot guide (2) toward rear and then pull out toward outside. Simultaneously pull out handle (1) slightly. Avoid damaging paint.
  4. Disconnect driver's door infrared receiver connector (X8/13)
  5. Remove door liner
  6. Disconnect keyless go connector on hinge strap (8)
  7. Remove handle (1) with bases (4) and (5). Pull handle (1) with bases (4) and (5) out of hinge strap (8) toward rear.
  8. Pull off insulating mat in area of door lock
  9. Remove hinge strap (8). First open retainer for release handle, unscrew screw (9) from handle recess and remove hinge strap (8) with release handle through installation opening in inner door panel.
  10. Disconnect keyless go connector on inner door panel. Remove cable strap.

Installation:

  1. Install hinge strap (8). Insert hinge strap (8) with release handle through installation opening in inner door panel and insert release handle into control lever retainer. Turn screw (9) into handle recess.
  2. Contact keyless go connector on inner door panel. Replace cable strap.
  3. Install handle (1) in hinge strap (8) together with bases (4) and (5). Ensure that the lever on the handle slides behind the actuation lever (11) on the bracket so that the lock can be unlocked.
  4. Contact keyless go connector on bearing bracket (8)
  5. Insert guide (2). Simultaneously insert driver's door infrared receiver connector (X8/13). When inserting the guide (2) ensure that the rotating rod (3) is moved into the door lock (14) in the correct position.
  6. Tighten guide with Torx screw (6). Secure Torx screw (6) against falling down.
  7. Adjust clearance between handle (1) and actuation lever (12). Press release handle with retainer opened up until resistance can be felt. Then lock retainer.
  8. Check clearance. Pull handle (1) until resistance can be felt clearly.
  9. Glue on insulating mat. Replace damaged insulating mat.
  10. Install door liner
  11. Insert installation opening (13) cap into narrow side of door
  12. Check for proper function
  • Screw for front door handle: 3 Nm
  • Adjustment values for side door: Clearance: 2(+-1)mm

Remove/install front door side airbag unit

W220 Remove install front door side airbag unit.jpg
  • 1 - Riveting
  • 2 - Sidebag unit
  • 3 - Retaining plate
  • R12/9 - Driver sidebag squib
  • R12/10 - Front passenger sidebag squib
  1. Switch off ignition and store transmitter key outside of transmission range (min. 2 m)
  2. Disconnect battery ground line
  3. Remove door lining from left or right front doors
  4. Release and disconnect electrical connector from driver sidebag squib (R12/9) or from front passenger sidebag squib (R12/10)
  5. Drill rivets (1) out from the bracket plate (3) of the sidebag unit (2)
  6. Remove sidebag unit (2)
  7. Install in the reverse order
  8. Check and erase vehicle fault memory using diagnostic system (when replacing sidebag unit (2)).
Front left door airbag.
Connection to airbag.
Error Code Generated By Description
9243 AB - Airbag The resistance value in the ignition circuit containing component R12/10 (Front passenger side airbag ignition squib) is too high.

Remove/install front door power window switch group

W220 Remove install front door power window switch group.jpg
  • 1 - Molding
  • 2 - Door control module cover
  • 3 - Door handle cover
  • 4 - Door trim panel
  • 5 - Switch group cover
  • 6 - Assembly wedge
  • S20/1 - Switch group for power window, driver's side
  1. Press molding strip (1) out of door control module cover (2) on driver's door with assembly wedge (6)
  2. Remove door handle cover (3) from door handle in direction of arrow
  3. Unscrew door control module cover (2) from door liner (4) of driver's door and press off with assembly wedge (6)
  4. Unclip switch group cover (5) with switch group for power window, driver's side (S20/1) from door liner. For this purpose slightly press cover in at bottom edge (arrow) and lift until cover can be removed together with switch group for power window, driver's side (S20/1).
  5. Remove power window switch group connector, driver's side from door control module.
  6. Remove switch group cover (5) from power window switch group, driver's side (S20/1). For this purpose press retaining lugs (arrows) for power window switch group, driver's side (S20/1) together with suitable tool until power window switch group, driver's side (S20/1) can be removed out of switch group cover (5) toward inside. Power window switch group, driver's side (S20/1) can only be replaced completely.
  7. Install in the reverse order

Remove/install front power window switches

W220 Remove install front power window switches.jpg
  • 1 - Switch cover
  • 2 - Door trim panel
  • S19s1 - Right front power window switch
  1. Unclip switch cover (1) with right front power window switch (S19s1) from door liner (2) on passenger door. For this purpose lift switch cover (1) at bottom edge (arrow) until switch cover (1) can be removed with right front power window switch (S19s1).
  2. Disconnect right front power window switch connector from right front power window (S19s1).
  3. Remove switch cover from right front power window switch (S19s1). For this purpose press retaining lugs (arrows) for right front power window switch (S19s1) together with suitable tool until right front power window switch (S19s1) can be pressed out of switch cover toward inside.
  4. Install in the reverse order