Re: WIN Module on 2008 Jeep GC with Hemi Engine
1) It could... I would think it would loose other powers like the power keeping the vehicle running.
2) Sure there is someone, but I cannot help you here.
3) see #2
4) Yes, all keys need to be there and all keys must be reprogrammed to the vehicle. Also information needs to be pulled from the pcm and transfered to the WCM all using starscan or witech. Either way its NOT something you can do in your driveway.
Its hard to say though, I don't know what their diagnosis was, if they diagnosed it while it was a problem or if it was just a S.W.A.G. (scientific wild ass guess). Having said that I am not ready to throw any tech under the bus, but will say I have diagnosed intermittant accessory operation for the blower motor not working and airbag lamp coming on... It was a built in "run/start" relay in the junction block below the steering wheel. Occasionally it would contact well enough to make everything work but regularly didn't. I would guess there was a dtc or something that lead them to their final "solution".
2005 Jeep Grand Cherokee - Gone but not forgotten!