Rear door lock of 405

remove door panel to inspect linkage in extreme cold and age the clips/connectors break or pop off also if greased can thicken like a putty and also not allow proper working

Make sure the striker plate is adjusted right. That's the piece that the door latches on to on the door frame. It should have an adjustment. You may need a special wrench to loosen it and move it to a better position. I hope this helps.

If the little lever on the door latch doesn't work, you will need a new door latch.

take a look at the latches, make sure they are grease good and all working,sometimes one of the latches freezes up, so the door is not completely latched,also you can adjust the striker to lock tighter,this is located on the body, at the top and bottom of the left side door,take a look and see if all latches are latching, use a screw driver to push them locked and see if latec will stay latched in the lock postion. good luck.

Hi
Try pushing against the door while lifting the handle then pull it hard. they stick on the 307 because the latches dont alaign properly, if that does not cure it try locking and unlocking the car's central locking repeatedly, while still trying to open the door.

If that does not fix it then you will need to remove the door card/door trim. It sounds like either the mechanisim has failed or the rod which connects the mechanism has came off, this can be a tricky job as normally you would have the door open to remove the door trim. you may not get the trim all the way off you might have to put your hand on the inside of the door and unlock it, try pulling each rod gently, and feel around where the latch is try and free it.

Like I say theres no easy fix for this fault, it may take you some time to get the door open.

Let me know if you need more info
Regards

Dan

There are 'star bolts' on the latch, loosen them off, not too much that it' s loose, just tight, close the door lightly, and make sure the door is latched, slowly open the door and tighten the starbolts,

take off door panel and so door can be lock by key only and take off latch cable -hope this help

If the door won't open from either the inside or outside than there is a problem with the latch assembly or alignment. You can use the other rear door to see how the child lock works. Meanwhile, you'll have to remove the door panel on the right rear door from inside the vehicle. Then you can reach inside with a screwdriver and flashlight and work the latch free. Once you get it open you can further diagnose if it is alignment or a faulty latch assembly. It's not going to be easy getting the door panel off from inside or working the latch to release. I hope this helps.

there should be a switch located near the latch in the end of the door, my BMW is located on the latch itself

Rear
Removal

1. Using a small screwdriver, remove the screw cover from the armrest of rear door trim panel (27406).
   

1. Remove the two retaining screws.
   

1. Using Trim Pad Removing Tool from Rotunda Windshield and Moulding/Trim Removal Kit 107-R0401 or equivalent, pry rear door trim panel from door inner panel.
   

1. Disconnect electrical connectors.
   

Installation

1. Position rear door trim panel on door inner panel, aligning two locators on rear door trim panel. Reverse Removal procedure.
   

------------------------------------------------------------------------------------ Rear
Removal

1. Remove door trim panel and watershield. Refer to Section 01-05 .
   

1. Check all connections of remote control links and cables. Service as necessary.
   

1. Remove remote control assembly.
   

1. Remove door latch remote control assembly from latch assembly.
   

1. Drill out rivet at bellcrank and link (264B14).
   

1. Remove three screws attaching latch assembly to door.
   

1. Drill out rivet that attaches actuator motor to door.
   

1. Remove latch assembly with actuator motor and door latch control rod lever link assembly.
   

Installation

1. Install new bushings and clip onto latch assembly.
   

1. Install latch with links and power lock actuator into door cavity.
   

1. Position latch assembly to door, aligning screw holes in latch and door. Install three screws. Tighten to 10-13 Nm (89-115 lb-in).
   

1. Attach door latch actuator motor to door with a new rivet.
   

1. Install bellcrank and link to door using a new rivet.
   

1. Install inside door handle and remote control assembly to door.
   

1. Open and close door to check latch assembly operation.
   

1. Install watershield and door trim panel. Refer to Section 01-05 .
   

Item Part Number Description 1 221A00 Door Handle to Door Latch Actuating Cable 2 26446 Rear Door Control Rod Retainer 3 377901 Plug Button 4 26412 Rear Door Latch 5 W623451-S2 Push Nut 6 224A32 Counter Balance 7 22450 Door Outside Handle Tension Spring 8 W701210-S309 Screw 9 224A20 Outside Door Handle Anti Rattle Pivot (2 Req'd) 10 22404 Door Handle 11 224A24 Front Door Outside Handle Spacer (2 Req'd) 12 264A64 Rear Door Actuating Rod 13 22408 Outside Door Handle Anti-Rattle Bumper 14 22428 Outside Door Handle Large Pad 15 N621906-S2 Nut (2 Req'd) 16 N807329 Screw (3 Req'd) 17 26595 Rear Door Electric Latch Actuator (RH) 18 W701566-S47 Rivet 19 431C04-A Rear Door Latch Striker Assembly 20 — Door Lock Striker Plate (Part of Door Shell Assy) 21 W525172-S Rivet (2 Req'd) 22 264B14 Bellcrank and Link (RH) 23 264A50 Bushing 24 N802034-SG Rivet 25 26420 Rear Door Latch Control Rod Link 26 W525172-S Rivet (2 Req'd) 27 21818 RR Door Latch (Inside) 28 A26460 RR Door Latch Push Button Rod 29 21982 Door Latch Rear Striker Assembly 30 N808377-S101 Screw (2 Req'd) 31 250A04 Rear Door Catch 32 N801010-S100 Truss Head Bolt (2 Req'd) 33 N804234-S2 Screw 34 266A74 Rear Door Latch Actuator Retainer 35 24630 Rear Door 36 26552 Rear Door Latch Control Escutcheon A — Tighten to 21-29 Nm (16-21 Lb-Ft) B — Tighten to 10-13 Nm (89-115 Lb-In) C — Tighten to 7-8 Nm (62-70 Lb-In) D — Tighten to 26-34 Nm (20-25 Lb-Ft) E — Tighten to 3-4 Nm (27-35 Lb-In)