Re: 93 300E doors locked when connecting battery

Um, like Tiger says, I feel it is aftermarket too. MB alarm does not work this way. I don't recall the horn ever sounds when MB system is armed. I have an 89 300TE with aftermarket alarm. Shortly after buying the car, I disconnected the alarm. I prefer the factory one. Of course, no instruction/wiring diagram on the aftermarket system also worried me. I had a similar experience (but not as bad as yours) from a different car/make.

The MB central locking has the wiring and vacuum tube running inside the doors, under the carpet (passenger/right side near door frame), under/behind the rear seat. There is no wires under the hood.


Doobie brother wrote:
we bought the car used......never had 2 keys.
the car was unlocked when troubleshooting engine surging at idle....figured it wouldn't hurt to reboot computer....got out, leaving key in ignition, and removed batt cable.....five minutes later I go to reconnect and pop, pop, pop ....the doors lock!!! and the horn beeped a few times!!!

I have a locksmith coming out to open it up tomorrow, but I'm convinced if one knew just where the door lock wires are under the hood, it could be unlocked.......................


"Wan-ning Tan" <suntan@xxxxxxxxx> wrote in message news:wt6dnecPzOYtRf_UnZ2dnUVZ_szinZ2d@xxxxxxxxxx

It is always safer to have more than one key, and they are kept by separate person (if that is possible).

BTW, how did you manage to lock the door? MB always needs key/remote to lock from outside. If you lock from inside, all doors unlock the moment either front door (or driver door for cars earlier than mid 80s) is open. Connecting to battery power itself does not trigger locking action.


Doobie brother wrote:

Yes, this is in US.....I'll go that route if need be......thanks.

"Tiger" <tiger0002@xxxxxxxxxxx> wrote in message news:49621af5$0$20308$607ed4bc@xxxxxxxxx


If you are in US, you can simply bring proof of ownership to the dealer and order a new key. It will take a couple of days to get new keys.







.

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