Right rear door lock Citroën C8 Peugeot 807 9138C6

Description

Right rear sliding door lock for CITROEN C8 and PEUGEOT 807

Part description

This used lock of the right rear sliding door is intended for Citroën C8 and Peugeot 807 cars. It is an important element of the central locking and closing mechanism – a properly functioning lock ensures safe locking, reliable unlocking and secure holding of the door in the closed position.

If you are dealing with a problem with locking/unlocking the right rear sliding door, changing the lock is usually a quick and effective solution without unnecessary compromises.

Technical information

• Manufacturer: Stellantis (Citroën/Peugeot)
• Model: Citroën C8, Peugeot 807
• Other numbers: not specified

Product codes

• Product codes: 9138C6

Installation recommendations

Generally/typically for sliding door locks, the exact steps may vary depending on the specific car design and equipment. Below is a practical procedure that is most often used when changing a door lock.

1) Before assembly (checks of the used part, what to compare with the old part)

• Compare part number 9138C6 with the old lock.
• Check the compatibility of the connector (type, number of pins) and mechanical mounts.
• Inspect the lock for cracks, damage to the pull rods/pack and the condition of the contacts in the connector (oxidation, bent pins).

2) Necessary tools and materials (in general, without specific extra parts)

• Set of screwdrivers and bits (Torx/hex depending on design)
• Plastic crowbar for removing upholstery
• Pliers for clips/fuses, or small flat pliers
• Contact cleaner (optional)
• Gloves, flashlight

3) Step-by-step assembly procedure

1. Turn off the ignition and disconnect the battery for safety (recommended for electric locks).
2. Secure the door in a position that allows safe access to the inside of the door.
3. Remove the inner lining/upholstery of the door so as not to break the clips.
4. Carefully disconnect the electrical connector of the lock.
5. Release any tie rod/cable guide of the handle or internal control (depending on design), note the guide and attachment.
6. Unscrew the lock fixing screws and remove the lock from the door.
7. Compare the old and new piece side by side one more time (fitting, orientation, connector).
8. Install the lock in the door, seat it in the correct position and fasten the screws.
9. Reattach the tie rods/cables and check that nothing is crossing or rubbing.
10. Connect the electrical connector and make sure it snaps in properly.
11. Before installing the upholstery, perform a basic functional test (lock/unlock, lock reaction).
12. Refit the door trim and all covers/mouldings.
13. Connect the battery and verify the locking and unlocking function again.

• 4) Post-assembly checks and test drive/function verification

  • Verify the locking/unlocking repeatedly (remotely and with the button in the interior, if there is one).
  • Check that the door “fits” correctly, stays closed and that there are no unwanted noises when driving.
  • If the problem persists, check the wiring in the door and the connectors (a break in the wire or a bad contact is common).

  5) The most common assembly mistakes + how to avoid them

  • Breakaway upholstery clips – use a plastic pry bar and work your way around the perimeter.
  • Poorly routed tie rod/cable guide – before dismantling, take a photo of the original condition and route of the cable.
  • Unclosed connector – after connecting, check for a click and possible securing with a fuse.
  • Test after assembly – check the function of the lock before fitting the upholstery, you will save time.

  Reasons why the part is damaged

  • Wear of the lock mechanics (latch, gears, springs) due to frequent use of sliding doors.
  • Moisture and corrosion in the door area, which worsens the operation of the mechanics and electrical contacts.
  • Oxidation or loose contacts in the connector – then the lock does not respond reliably.
  • Overloading during closing/opening (stuttering of the door mechanism, bad adjustment) which stresses the lock.
  • Wiring damage in the transitions and door harnesses – the lock may appear to be faulty even though the problem is in the power/signal.