Solved: Trunk lock/release on 93 100CSQ?

Kneale Brownson knotnook at
Tue Nov 14 15:11:15 EST 2000

You need to lubricate the lever mechanism.  It corrodes up and "freezes", 
as will the lock cylinder (behaves like you have the wrong key) if let go 
too long without lube.

At 12:49 PM 11/14/2000 +0000, hah at wrote:

> >I drove home, got the key from my wife, and opened the trunk.
> >
> >I'll check the manual to see whether it's the expected behavior, but it
> >appears that if you lock the trunk with the key, then lock the car from
> >driver's door, the trunk stays locked even after you subsequently unlock
> >car from the driver's door.  I haven't yet tried the case with trunk
> >unlocked/car locked from door to see if the trunk opens when I unlock the
> >car from the driver's door.  I'm just satisfied that we'll be able to put
> >our gear in the trunk before the trip, and then take it out again when we
> >arrive.
> >
>The owner's manual should explain the dual-mode operation of the trunk, if
>it is like my '91 200q: insert key and rotate clockwise to push and open,
>but the key can be removed in either a horizontal or vertical orientation.
>One way, the trunk lock operates in sync with central locking and the other
>way it remains locked all the time, opening only via [master] key.
>A while back my car seemed to go into permanent key-only mode, so I opened
>up the lock mechanism and discovered that there was a ball-bearing and
>detent setup that functions as the "memory" to retain the locked/unlocked
>state of the trunk - mine was jammed at "locked". I removed the ball
>bearing, so now my trunk lock operates with the central locking (the mode I
>leave it in) but will sometimes forget that it is supposed to be unlocked
>after a drive, as certain bumps in the road cause the lock to move.
>Henry Harper
>1991 200 quattro, 110k, going to James' to install winter oil and snow
>tires tonight
>1988 GTI 16v, 215k, got snow tires on last week, actual snow on the road
>this morning, still snowing in Boise

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