89'560SL recently the locking system will lock on it's own while parked ( engine off).This happens after a short while. Any one have an answer as to why? Thanks

No real answer for you other than you have a leak somewhere.

My wifes 300D, vacuum locks disconnected under the hood due to vacuum leak, will lock the passenger side door almost immediately after you open it. I haven't had a chance to track down why though.

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'84 300CD Turbo 132k (Anthracite Grey) - WVO - My daily driver - Recently named coo-coo-coupe by my daughter.
'84 300D Turbo 240k (Anthracite Grey) - Garage Queen
'83 300D Turbo 220k (Orient Red) - WVO - Wifes daily driver

I'm not a certified mechanic, but I did stay at a HolidayInn Express last night.

self locking sounds scary...I have little kids and the idea of breaking a window to get them out is not nice.

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82 300D....went to MB heaven
90 350 SDL....excercising con rods

Thanks both, I hope some others will respond and I can get this mystery 'unlocked' ha!

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