I’ve noticed in the last few days, since putting the new Lexus “smart key” on my ring, that the Ml’s RCL function is a bit flaky.  I never had this problem when I had other MBZ keys or the Audi key on the ring.

There did seem to be some problems with the early model years locking themselves.  On all models, if you unlock the doors with the remote but do not open any of them, they will automatically re-lock after a few minutes.  I believe there is something that goes wrong that makes the AAM erroneously go into this mode and thus the doors lock ”automatically”.  I recall on the early days of the M-Class Mailing List, owners were getting locked-out while at the gas station after leaving their keys in the truck.