[W126 Coupe] trunk lock

[Mister McGoo]

NON-DESTRUCTIVE METHOD WORTH A TRY TO OPEN YOUR TRUNK SOME people get clammy armpits about using a can opener on their Mercedes-Benz.   I have never seen the emergency rip-cord... but here is another idea worth a try:  
 
I was curious so I tested this on my wife's car this morning.  I intentionally set the vacuum actuator in the trunk to "locked", the push button was disabled (locked).  The button pushed in OK but didn't operate the mechanism.
 
Remove the inside door panel, disconnect the vacuum line to the door lock actuator, give the line a quick burst of compressed air.  That's it!  The trunk lock opened.  In fact everything opened... no surprise because it is all on one system. If you do not have compressed air it is doubtful that blowing into the hose is strong enough (I tried).  A hand pump might work.  That failing, go to a shop that has an air compressor... remember, a SHORT half-second burst into the vacuum line will do it.  too much pressure might disconnect the weakest connection in the system.  Then, politely put, you're screwed.
 
It is a lot of trouble getting inside the door, and it's hard to reach to reconnect the door lock vacuum line.  Having now done this I would suggest cutting the vacuum line at an easy-to-reach spot, possibly at the bottom of the door, rather than disconnect the vacuum line at the actuator.  (There is only one vacuum line in the door so you can't really make a mistake and cut the wrong one.)  Then I suggest reconnecting it with a rubber hose connector.
 -Bellamy   
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