How do I replace brake light switch? on 2004 Audi A6 Quattro

The lights come on intermitantly. Fuses have been replaced and contacts (fuse box and fuses) cleaned.

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2 answers 1 comment
try www.alldatadiy.com for instructions
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?