disengage gears got mind of their own

Just to try you guys in the know with another question. My 940
automatic has a button on the stick which will disengage low gear I(
think )to make it run in 3 gears(I am no expert on this), Every now and
again this seems to happen without me doing anything, just driving
along. Once I slow down a gear I can use the button to turn the light
off and off we go again. It can be a little reluctant to alter and
seems to do it out of the blue. Am I in trouble and is this going to
cost loads.
Clare

 

The relay needs to be resoldered, or you can just replace it if you
don't know anyone who can solder. It costs about $50.

 

On most 940s, this button serves to disengage overdrive. However, it
was an option (if you ordered through European Delivery, as I did) to
have the air suspension, the engine gearing, the brake response, and
the turbocharger reconfigured into a sort of sport mode through this
button, sort of like the S button found on many newer models. This is
what I did -- we essentially use the same button, but different
functions. To find out which you have, simply start the car, get out,
and push the button while carefully noticing the clearance of the car.
If it seems to drop, you have the second option. If there is no
noticable change, you have the first.

This button can be quite sensitive. I learned very quickly not to rest
my hand on the shifter -- it seems to just feel the touch and activate.
Replacements, I have found, are exactly the same.

 

By the way, Clare, have you gotten the problem fixed where the car
shuts off intermittentally?