Audi A5 vorsprung filler cap

[Garry1968]

Has anyone else had issues with the filler cap not unlocking, I have also tried the manual unlock with the ring pull in the boot and STILL it will not budge any suggestions please ?

[Magnet]

Hello Gary,

Such issues are normally as a result of a sticky solenoid in the flap release. Worth doing a forum search, since this been raised in the past. 
Meanwhile give it a good squirt of WD40 , while you search. 
Quickest way to get it open ( before fitting a new solenoid) is to leave your fuel level drop to under a quarter, and call out your breakdown provider. 
Kind regards,

Gareth.