yep only one with wires to it but if the others are goosed it will pick up the knock and show a fault.....mine had
a stored fault and it was the rear gearbox mounting causing the fault i have a brand new front engine mount without the wiring in me boot:icon_thumright:
If there's only one electric engine mount, and you've got an error code then its safe to assume that the mount with the wires to it is at fault. Just check the wires aren't damaged before you going ordering a new mount.
With Multiple Wired engine mounts like on the V6, you can determine which one(s) are faulty using VCDS (even in shareware mode).
> Clear fault codes, start / rev engine fault should re-appear
> Disconnect engine mount sensors one at a time, clear fault codes, start / rev engine, and you will find with the faulty one disconnected the fault code does not reappear.
Other than this test, I have found no way to ID which one is bad. Cant see anything physically wrong with bad one.