The fuel filler flap on my 09 VW Golf estate (diesel) will not unlock. I have tried locking and unlocking the car which should relase the filler flap but it remains locked. The owner's manual says there is no method of manual relase on this model. Can anyone suggest how I can get it open?
Have you checked for a blown fuse? You may also be able to reach the release either by reaching into the wheel well or removing an interior panel. Another option is that the latch is released but the spring that pops the door open is broken. Have an assistant try to open the door while you actuate the switch.
I had this problem with my 2013 Passat wagon. I took the car to the dealer and the mechanic repeatedly pressed the unlock on the remote while at the same time pressing and releasing the fuel flap. It worked. He explained that the flap lock can fail in a number of ways. In my case it just got stuck and the press-release was sufficient to solve the problem. In other cases the lock can actually break in which case you just have to take it to the dealer to get replaced. I'm getting it replaced at the next service.
For any one who has found this thread and is still stuck, I solved this by:
Getting a tyre lever inside the fuel cap and gently forcing it open a bit whilst repeatedly pressing unlock on the key fob.
Once its open you can look into preventing it from happening again. I ended up taking the whole fuel cap section out and duct taping a bit of metal in the way of the lock to physically prevent it from being locked again.
This obviously means the fuel cap will never lock so bit of security risk but its a great solution in the mean time.