Patient: 1998 A4 B5 Avant quattro Symptoms: Headlights do not work Cause: Most likely blown switch Treatment: Remove steering wheel, replace switch Supplies: Torx- what size bit for wheel and for spokes? Would a 3/4" drive ratchet do the trick? Do I disconnect the battery so the air bag doesn't discharge? Cheers -- Danton J.A. Cardoso