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Hi folks, I've just posted up a quick hello in the new members section.

I have only been a RS4 owner for about a month now and I am still getting to know the car. I have the following small circular button fitted to the dash just below the steering wheel



I am guessing it may be for a tracker of some sort as I cant find any info in the owners manual or documents I got with the car. When pushed the car announces "no information available" or something similar. Any ideas?

Looks like Trafficmaster to me.

Do you have TMC enabled in your DIS display? If you are using a old 2006 SAT NAV disc then chances are it will have a line crossed out, 2007 onwards and t is activated (Green TMC logo). Maybe there connected, I have never seen that button before.

Traffic master it is then.

I don't have sat nav in the car, its fitted with a single DIN concert CD player which I was surprised at as I haven't seen many RS4's without sat nav.

At first I thought it was something to do with this;



I have since worked out that the above is a radar deflector which has been fitted at some point which will be kept switched off after reading about them online.

I had that TM button on a car once, I pressed it and somehow it dialled a call centre that wanted to give me Navigation instructions over the phone. It didn't connect over my phone either.
I never pressed it again..

Mine had a single CD when I bought it, soon swapped it out to RNS-E though not a job to be taken lightly, if I'd had a crystal ball I'd have paid the extra for the 1st owner to buy the double size CD head unit!