The radio falls to static when you turn on the Rear Window Heater, this is with the first gen Touch screen and when you enable the rear window heater it looses signal (from strong signal to nothing). I think it possibly might be the message from the A/C ECU to the SatNav unit telling it to compensate for the magnetic field it induces, as the front window heater works perfectly.
The front A/C unit is the high-line with dual zone (heated not cooled seats) and the rear is a single zone (2 knobs).

look in the rear cubby to make sure you havnt any water ingress this could be a cause of a bad earth. ... - .- -.




Y. O. L. O.
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