I have a 2001 E53. Wireless entry does not work. First I tried many ways and attempts to reprogram them. Second I cut a key open and replaced the battery, no luck. Third I took the vehicle to a shop to have a computer diagnostics, nothing unusual. Fourth, bought a new key FOB, the dealer tried to program it many times, no luck. Lastly I replaced the antenna AMP on the rear hatch and no such luck. I don't know what else to try or do, any suggestions will help. I checked all of the fuses.