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Tech Article
Audi C5 A6 Symphony Sound System (Stereo unit, Radio) FusesLast Updated: 04/30/2017 | | Parts Group: Stereo sound system / radio main unit |
This article discusses the Audi Symphony stereo unit for the C5 Audi A6 with the main focus being on replacing the fuses. If you're not here for the technical analysis but would rather buy a used unit from us, then please select the link below. Our stereo units come with a matching radio code, and are guaranteed to work.The information herein is based on one of our project cars.
I was trying to use the Ross-Tech diagnostic VCDS software on this car, and it refused to connect. On my other Audis, it worked just fine. I looked into typical causes of this particular symptom of failure, and I learned that on this model, if the stereo unit malfunctions (specifically, due to a blown fuse) it may cause communication problems with the on-board diagnostic (ODB II) port.
As I understand things, the stereo unit has two fuses: one in the back of the unit, and one in the body of the car, in the main fuse box.
The fuse in the back of the unit is a double-spade-type fuse, brown, 7.5A.
To get to the fuse in the back of the unit, I removed the stereo unit from the car, as described here: How to remove and replace the radio a.k.a. Audi Symphony sound system.
The one in the body of the car, in the main fuse box, is #37 and 15A (typically, blue) as per my owner's manual. To get to it involves opening the driver door and then opening a cover on the side of the dashboard, to gain access to the fuse box. This is vastly easier than removing the stereo, so that's probably the best place to start. In our project car, the fuse at this location was indeed blown.
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