diff lock from hell

[Huw Powell]

> So I came into a situation 2 nights ago whereupon my diff lock was needed,
> and once engaged I gained the traction I needed and all was good to go...
> EXCEPT the diff lock wouldn't disengage, no matter how many times I hit
> the switch,....  I was able to turn it off (ABS
> was re-enabled, the green light was off) and get where I was going with
> the diff unlocked.  I think it was physically unlocked too, the car
> didn't feel squirrely or scrub the tires around corners.  So on the way
> home I fire up the 200q20v again and what do you know, it's engaged and
> I can't disengage it.

I would at least examine the lock mechanism vacuum lines for problems.

And if you get an opportunity, swap in a known good controller module -
it might be under the back seat, that's where it is on the 90Q.

--
Huw Powell

http://www.humanspeakers.com/audi/

http://www.humanthoughts.org/