Hi guys!!!

My 2002 ML500 key remotes, that were both previously working fine for years, no longer will lock my doors. There is also a warning audible beeping tone that comes on whenever I turn the engine off after driving the vehicle or whenever I open the unlocked doors. Also, I tried to manually lock the doors by prying the plastic cover off of the driver's side door key-hole (which I have never used before) and inserting the key, but it will only lock the drivers side door. On another note: While the vehicle is running, I can lock the doors with the center console door locking switch and they all lock like they've always have.

Any insight into a resolution would be greatly appreciated.

Thank you all in advance

__________________
Currently Driving
2006 E320 CDI
1999 E300 Turbo Diesl
2002 ML500
1995 E320 Station Wagon


MBs I've owned
1997 E320 Assassinated by Pine Tree
1987 300E Wife Killed Engine
1981 300D Stretch Limo Total Loss
1970 250 Coupe 212,000 mi.
1974 450sel 184,000 mi.
1974 240D 377,000 mi.
1977 300D 204, 000 mi.
1979 280se God Only Knows!
1983 240D 130,000 mi.
1972 220D 280,000 mi.
1983 300SD 244,000 mi.

I too replaced AAM (~$700 indie) in my 2001 ML55 to get the remote key functionality back. It wasn't functioning for nearly two years.

Convenience of remote lock finally beat our my thrifty nature.