Recommend that you unlock car and leave door open next time. This
time, simply break a window and crawl in, being carefull to avoid any
cuts on the broken glass. Or you could simply break the glass in a
door window and then reach in and open the door. Or simply use a crow
bar to open the trunk and then unscrew the back of the back seat once
you have accessed it through the covering panels in the trunk. As an
alternative, you could simply tow it to a street in a big city slum
area. Leave it there. Watch from a block away and eventualy someone
will come along and open it to hotwire it. At that point, take out
your gun and shoot the thief and their buddies, get in the car, and
drive off. But I would advise driving off rapidly. And you might want
to disguise yourself. Above all, do not call a lock smith. That ruins
the fun of being a do-it-yourselfer.
High security lock systems, no way to over-ride.
Price a locksmith visit then call the dealer and price a rear door
triangular stationary glass which is usually fairly inexpensive.
I wouldn't recommend breaking one of the roll down windows as they are
much more expensive.
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:
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
No... no door wire in the engine compartment. It is much cheaper to get a
duplicate key from dealer.
I suspect you might have an aftermarket alarm system or keyless system
installed in your car. Only alarm will lock the door when you turn on
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
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:
Gee instead of welding up the hole you should have plugged it for the next
By the way having keys locked in your car is usually covered under the
emergency road service/towing coverage with your insurance policy.
If you are not part of the solution, you are not dissolved in the solvent.
Actually that should no longer be true. As of 10/01/2008 Mercedes-Benz
USA sent a Bulliten to all their Dealers with new mandatory security
proceedures for all TRP's (Theft Related Parts).
Keys for lockouts etc may be ordered from the dealer in person by the
current registered owner only and original documents must be
presented, copied by the Dealer and retained at the Dealer for 10
years and subject to audit by MBUSA on request.
Further, Ordered keys may ONLY be installed or surrendered to the
actual vehicle owner with the vehicle present in the dealers shop and
a Repair Order opened to document the Dealers compliance with the new
This new policy strictly prohibits the Dealer from simply ordering
replacement or spare keys for clients and handing them accross the
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