when i unlock doors using key, I hear a hissing sound near the gas filler cap and I cannot open the filler cap door,and also cannot relock doors until noise has stopped is there a vacuum line issue here?
thanks

 

You are right, it's an vacuum problem with the gas filler door actuator. You'l find it when you remove the linig in the trunk (or better boot??). Maybe it's only a hose which slippped off or the actuator itself is gone. Under the rear seat (driver side UK) you'll also find the central locking unit.Maybe there is the something wrong.

 

Thanks
I‘ll try to look tonight.