Rear door jammed

SOURCE: Renault Clio Rear Door Lock Fault

It has nothing to do with the "child lock" It is a know problem in this car, they tend to get caught in lock. Only thing to do, is to take of the panel then the outside handle, and through that hole destroy the plastic covering the lock, a large screwdriver and hammer will do! Then you can release the lock, while you pull the inside release handle. Buy new!

SOURCE: Volvo s40 rear doors wont open inside or outside

There is a child safety switch on the rear latch assembly that prevents opening from the inside handle. This switch may be on. Check your owners manual for more info.

Bret
RepairPal.com

SOURCE: 2004 Honda Accord Euro. Central

I am a mechanic and had the same problem with a 2005 Acord that I purchased couple of months ago. Contact through the trade provided little help. The problem arose during a week that we in Adelaide, South Australia had a record o 40+ degrees centigrade heat. I noticed the drop knob slightly moving when the immobiliser was activated, but the drivers door failed to lock. Key locking would lock all doors however.
The cost of a door actuator from a Honda dealer was $185.00 (Aus), about $250 (US). The spare parts guy told me they had them in stock and sold a number of them. As a result I decided to find out whether the actuator was in fact faulty. I susequently removed the door lock and actuator assembly from the door. (A fiddly type job). The actuator assembly is in a plastic sealed assembly. By using a lot of patience and a box cutter I was able to cut around the assembly and then carefully lever the plastic housing apart. This revealled the small electric motor (similar to a slot car motor) that drove a worm and wheel assembly and a system of cams that actuated the door lock system. I found on dismantling the electric motor that the armature was coated with grease from the wormwheel /cam assembly that is mounted above the motor when installed in the vehicle. I cleaned the armature and brushes using superfine wet and dry carborundum paper, undercut and cleaned out the two armature segments of all remaining grease with a solvent. The motor was then tested with 12 volts and found to be ok. I then reinstalled the motor and glued the housing back together. It now works fine. I believe the housing was either initially overfilled with lubricant or that the high ambient temperature caused the grease to melt and flow into the elecric motor contaminating the motor. (There is no seal between the gearbox and the electric motor). The job took a few hours from start to finish but I saved the cost of purchasing the part and didn't let it beat me.
Cheers and beers
Alistair Buckley

SOURCE: Central Locking to Ford Focus LX 2001

Problem with 2001 1.6 Focus which i was going to purchase for the wife, but problem with central locking! key fob totally dead even when i tried the reprogramming trick (key in ignition press button several times) and when locking/unlocking manually, central locking only working intermittently! Please help regards steve

SOURCE: Rear back door will not work with central locking system

If it makes a sound, but doesn't unlock / lock, then it's most likely the linkage has seperated. If it doesn't make a sound, it's most likely the actuator for the lock has broken. you'll need to remove screws that are by the door handle, arm rest, under door and side of door and then gently pull back on the panel as there will also be retaining clips attached and you don't want to break them. You'll need to lift the door panel upwards in order to get it off the window ledge. Then you'll need to pull off the seal in order to see inside the door