Audi has two ISV listed that I'm aware of, the more common is ISV part# * 035 133 455F (VDO) The less common and more expensive ISV part # * 0280 140 505 (BOSCH) These are NOT interchangeable parts, the VDO discounted @ ~125.00, the Bosch discounted @ ~195.00 (175.10 and 307.75 list, repectively). Here's to hoping you have the former HTH Scott