The lights come on intermitantly. Fuses have been replaced and contacts (fuse box and fuses) cleaned.
How do I replace brake light switch? on 2004 Audi A6 Quattro
try www.alldatadiy.com for instructions
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Usually pretty simple, Its under the dash attached to brake peddle..
Do you know how the cover, below the dash, is removed. Also, how is the switch attached?