1990 Audi 100 Q&A
1990 Audi 100 Question: Key cylinder
about 1/4" behind the key cylinder is a "hump" in the steering lock assembly wherein a release spring clip sits. in order to depress the release to free the ignition cylinder you need to drill a small hole centered in the aluminum hump at about the 11 o'clock position. don't drill into the metal clip! then use a pick or similar to push the clip down and pull out the cylinder. - some guy
The electrical assembly on the back of the key switch is bad. In order to replace it, I have removed the lower panel, the steering wheel & steering column switch assembly, and the instrument panel ...