I have an s430 and I took car in for servicing (B check) approx. 1 month ago and they did a recall that upgraded the dashboard. 2-days ago I went ot turn on my car and the radio and nav is not on. The reading onthe dashboard says no malfunction but I can turn onthe radio. It's programmed to off and when I press the radio button or nav I can't turn on. Help is this a quick fix of do I need to take back in???

Body control module? The one that controls your headlights, stereo, etc. That may be on the fritz or you may just have to get the guy to reprogram the thing.

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My lights and everything else comes on just not the radio/nav. So you say take it back and have hem re-program