Renault Kangoo fuel filler cap and nearside rear sliding door

I thought it was just the n/s door that locked , could be wrong .Certainly worth a look at electrical contacts and pins on side door and pillar . Check wiring behind , push pins in and make sure contacts clean and good contact .Just found this on another site ,



Answer Kangoo safety feature locks door
The kangoo has a safety feature built in that locks the n/s sliding door when the petrol cap is removed, otherwise the door overlaps the petrol tank filler when opened.
The system uses a small magnet in the side of the petrol cap assembly to trigger a reed switch that then operates the locking unit.
The presence of the magnet keeps the switch open and prevents the door from locking and when removed locks the door.
My first course of action would be to make sure that the magnet is still there, it should attract an iron object. Then check fuses etc.
Hope that helped.

I have also had this problem and have fixed mine. 1st remove the filler cap. If the car does nothing then it is the same fault as mine. There is a magnetic switch (reed switch) that has failed. I just disabled it and all is working. To do that, remove the parcel shelf. Remove the top three screws and then remove the the screws on the supports on the under side. Then remove the speaker wire. Remove the 4 black clips that hold the boot light in place. Under you will find a ton of cabled. The top big plug is for the rear lights. Under that is a small plug with two wires on it a black and white. Pull the plug a part. There is a small catch that needs to be press down and unplug. On mine as soon as I had, the door unlocked and now is working. Just remember that with this disabled you can open the sliding door with the petrol cap open.

I had the same problem and with darkdragonuk's superbly detailed advice have managed to fix it. It is worth noting however that in my '57' plate Kangoo the wiring is slightly different to what was described. The relevant plug, although in the same location has multiple connections none of which are black and white. Disconnecting it however does not appear to have any additional side effects and has worked a treat, albeit of course, as is clearly identified the interlock between the sliding door and fuelfiller cap will now be inoperative, which for most users will not be big deal and can be lived with.

Thanks for the advice. My locking was going on and off all the time. 10 minutes following the advice has sorted it out for no cost. Beware of the official Renault fix "We have fixed lots of these, you need a new wiring loom for the filler cap - cost £91 for parts alone before fitting"
I believe you can fix it as new by soldering in a new fuse in the cap wiring loom for around £4.
Thanks again
K2

Thank you very muchdarkdragonuk.
I had the exact same problem.
I've had my door panel off fiddled about a bit and nothing, until I came across your fantastic and easy to follow fix. thanks again can now have the grandkids in the back on that side without any hassles of door locking problems whew ;-)
Keep up the good work.
PS wonder if you maybe know why my how many miles left in the tank just keeps flashing and all other readouts are displaying as normal ?