thank you i have nothing not even a click when i try to operate the roof, it was working fine as were the blinds before it went to workshop, they asked if it was working i said yes but never tested it till i was home, he had an OBD reader on it and said no roof module detected, i assumed he had re programmed it, the garage is 2 hours away or i would take it back, i will check the plug on the fan to see it it is loose or indeed not plugged in and let you know again thanks for the suggestions

I thought an update may be in order. I took the "dodgy" risk of not locking the car whilst it was on the boat, it I believed worked, we sailed through the remnants of Storm Bernard it was a bit (ok very!) bumpy and the old girl fired up when we got to port. On return I could hear a lot of alarms going of, though not ours. Yipee Thanks for all the suggestions  

Hi Graham, sounds like an unfortunate experience there, but hopefully you can get it all back and working again. For the roof, you need to test with a multi meter that voltages are getting to the correct place, i.e. the correct fuse - remember that a fuse can "look" fine but only a resistance test would confirm, - the switch in the roof, etc. Can you hear any relay clicks as the roof switch is operated? In normal circumstances, the operation of the roof would not be linked to the replacement engine, but with Jaguar you never can tell. For the fan 1, could it be as simple as a connector loose / not reseated correctly after the engine installation. The fan should generate a fault code (DTC) of some description which can be read with an OBD code reader, which in turn would help point you in the right direction. N6 JMX

Thanks for the reply I have already mentioned the battery a few times to the garage I bought it from. The car is going back to Jag on Monday fingers crossed Jag can sort it....

good day to you, i had my XJ (x351) engine let go big time, i managed to source a low milage engine from an  rear end accident damaged  car, the car went to a jaguar landrover specialist to have the change done, since i got it back i have 2 faults,  fan 1 control circuit and the pan roof is not working, any advice would be appreciated, i have done the obvious reset holding the forward button on the roof also checked every fuse in the 3 fuse boxes and none had blown, obviously the battery was disconnected for quite a while, not sure if this might have any bearing on the problem at all. any help or advice that i am able to do myself i would be grateful, i am pretty handy with a spanner so willing to have a go, plus after paying for a replacement engine and fitting has left the coffers somewhat low,  many thanks for any help Graham