Vac sys locking by itself ?
 

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.

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

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