Once my car is warmed it, it idles at only 590rpm and feels pretty rough when I'm sitting in traffic or even manoevring to get into a parking space. When the engine is cool it idles perfectly at between 750-800rpm. Car has about 42K miles on the clock.
I've been back to the garage several times and even Audi France took control of the calculator 'at distance' but have so far been unable to improve things. They apparently had trouble getting into the calculator for some reason.
The garage even told me "there is no solution" but I don't believe that and I'm concerned that I am somehow damaging the car by using it like this.
Any ideas what it could be ? Would changing the calculator do it or is it more likely a sensor somewhere malfunctioning ?
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