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’07 S65 AMG. Just bought the car in Late Spring and for the 200 miles or so that I drove it, everything worked perfectly. My daughter borrowed the car to meet some friends at a restaurant. When she exited the restaurant, the car would not open to the fob, either from vicinity or pressing the buttons. Immediately replaced the fob battery at a nearby AutoZone but no change. Mechanical key inside fob would not open driver’s door or trunk locks. Contacted locksmith who promptly stated “ No Way” could he access this car. Contacted prior owner who stated that “99% sure that the supplied mechanical key works with this car”. Expensive tow home because, with car unable to be put in neutral, all 4 wheels had to be jacked up on dollies to accomplish removal from parking space and safe tow.
I am in the process of having MB re-code both keys to the VIN but doubt that this will help. Suspect that the chassis control module “glitched” and car entered into something called total lockdown where the fob receiver is turned off and, according to MB, the lock cylinders are immobilized. The car enters total lockdown when it detects that there is an attempt to steal it. May be willing to wait until both car batteries discharge to see if this will result in the lock cylinders being released so that the mechanical key will open door. Local MB dealership Service Manager wants me to have car re-towed there but, upon questioning, could not guarantee that he could access car interior. He was not surprised that the mechanical key would not work in the door but was a little surprised that the key would not work in the trunk. Since the tow there, and potentially back to my garage (if MB unsuccessful), would be expensive, I have not opted for this yet.
thanks for your input.
Bob


