I observed the following problem this morning:
When the car is stationary and when I switch the contact on, without starting the engine, immediately the warning sign (!) and the ABS light come on and stay lighted.
When I drive the car, these lights stay on and the Tacho does not work. Braking seems normal.
Google talks about left front wheel ABS sensor, ABS fuse, ABS relay, frequency converter...
Where to start? ABS fuse is OK and pulling and re-inserting ABS relay did not change anything.