Took my 2002 Rover HSE to the shop to have a conversation kit on the suspension. For some reason mechanic pulled and cleared the Body Control Module. Now the vehicle will not start. Is it possible to buy a replacement BCM and have it work in my car? Does it need to be programmed to my vehicle and key? And if so is this something that I can do on my own? Please advise. Any and all help will be greatly appreciated.