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Old 12th September 2011, 09:28 AM
Big Blue Big Blue is offline
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Join Date: Aug 2011
Location: Wimbledon SW19
Posts: 34
Default MMI doesn't remember anything

MMI does everything I tell it but when ignition is off for, say, 15 minutes it reverts back to factory settings. So German language, TP on, no saved radio stations, BOSE settings back to boring etc.

Is there some lithium battery that has failed or is there a memory prong that's burned out? I haven't upgraded software yet: will that help?

Advice welcome.
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1989 190 "Colditz"
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