Hey guys, I'm determined to sort out all the niggles on my vert asap, one of those niggles has been around for a while. It seems when I connect the battery something under the bonnet is hissing/ pressurising? It will do this until the battery goes flat so I'm constantly using my cut off switch to stop the battery going flat :(. I know something is wrong as when I connect the battery on my TT, it's silent and nothing happens until the key is turned! Any ideas where to start looking

Cheers

I've got an idea Daz, connect the battery and follow the hissing noise :clown:

Lol, It's the fuel pump ⛽, it's always on, but wandering where it's controlled, I believe it has a separate ecu

So it does this even before the key is turned ?

Yes! No key in the ignition, I connect the battery and the hissing and flattening my battery commences :(

 

So it does this even before the key is even turned ?

I'm not sure where the controller is on the vert, I have an NA one if you want to try a replacement? Your relay might have gone bad behind the drivers kick panel, green one. You could always try swapping it with a green one out the main fuse box see if it stops it.

Cheers Bazza, will check that tomorrow, I always forget about those hidden fuses and relay by the drivers, hopefully that will be it :) I will let you know if I need one Bazza, cheers

 

I'm not sure where the controller is on the vert, I have an NA one if you want to try a replacement? Your relay might have gone bad behind the drivers kick panel, green one. You could always try swapping it with a green one out the main fuse box see if it stops it.