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Any advice or a reset that’s needed to operate climate controls after battery replacement? Everything else is fully functioning but no AC buttons or feature light up or operate.
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'85 300D Turbo, '91 420SEL, '92 190E 2.6, '09 C350, '12 E63 Wagon
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Check associated fuse(s).

Pull negative battery cable, wait a little, then reconnect.

Maybe unluckily that control unit got fried. Had the command control knob module go on the W204 while it was still under warranty. (I blame sensitive electronics)...

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