After 6 months of driving my 91 300SE, I just noticed that I can open the right rear door from the outside when the lock button is down. I looked through the CD manual, but I couldn't find a section with specifics on the cranks and levers to help me figure out what's going on. Any advice on how to procede?

Also, the right front door seems to have a non-standard lock mechanism. I can't turn the key counterclockwise from the outside to lock the car (even with the door closed), but I can push down on the lock button with the door open to engage the central locking feature. No other W126 I've seen is this way.

Thanks is advance.

Regards,
Sixto
78 450SEL
91 300SE