Renault Master 2.5 dci 2004 The battery has been disconnected for 3 months when i reconnect it and try to start the engine the immobilizer light lights up solid and wont go out as it should do it flashes without the key in so i am thinking no communication between the key and the immobilizer is there any way around this or do i need to have it reprogrammed seem to remember bypassing the immobilizer on a transit in past years to many to remember how it was done any help much appreciated