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Battery "Visit Workshop"

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Old Jan 25, 2022 | 01:02 PM
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stianlundell
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W211 E280 4Matic
Battery "Visit Workshop"
Mercedes W211 4Matic 280cdi

Got a problem with the battery system. The diagnostic tool is showing the code "Check control module N82 or fault in CAN communication with control module A1".
I have replaced both batteries, AUX-battery-relay, and Control module N82, but the code is still showing as current.
Where do I go from here? The alternator is charging 14,2V and none of the batteries goes flat. Anybody knows what the A1 control module is?

Thanks.
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Old Jan 25, 2022 | 01:08 PM
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Heguli
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2006 E280
A1 is the instrument cluster.
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