I have a 1998 and had the same problem, the solution was really simple: just use your key to unlock all the doors and the fuel cap should unlock. It worked for me.
Scenic fuel cap locks operate with the door system - it's a security thing - if you use the remote to unlock your doors then you will find the fuel flap will open. Of course it will lock when you use the remote to lock the doors.
The lock for the access door for the gas cap is part of the lock system for the doors. If the car doors are locked the fuel door is locked also. Unlock the doors and the fuel door is unlocked also.
It is located in the fuel rail very close to the fuel injectors it will have a plastic cap on it
It varies. On older Fiestas e.g. mk2 and mk3 up to year 1994 the fuel cap has a keyhole. The key (originally the ignition/door lock key - good way to determine if the cap has been changed at any point) is inserted and turned right at ~90 degrees to release the fuel cap. On models after 1994 however, the design was changed to have a lid over the fuel cap.
unlock car using key, then just push fuel cap cover with your finger
The ignition and door key should fit the lock if it's the original filler cap, if it's not then a trip to the garage and hope they can help you.
the fuse is in uder the dash by drivers left kneee cap
make sure u unlock all the doors then the cap should unlock :-)
Remove the fuel fill cap that should take fuel pressure off and it would be safe to release the filter and change it!
open the trunk.Right where the gas cap is pull the carpet back to exspose the gas cap area you should see a buttom to manually open the gas cap
The lock for the access door for the gas cap is part of the lock system for the doors. If the car doors are locked the fuel door is locked also. Unlock the doors and the fuel door is unlocked also.
On a 2008 Ford Explorer you can have a fuel cap or the EASY FUEL system that doesn't have a fuel cap