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Disconnecting Negative Battery Terminal

E-Class (W212) 2010 - 2016: E 350, E 550

Disconnecting Negative Battery Terminal

Old 11-23-2018, 10:56 AM
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Disconnecting Negative Battery Terminal

I will be installing a powered subwoofer in my 2014 E350 and I will need to disconnect the Negative Battery Terminal at the trunk battery. Will this cause any problems or require for anything to be reset after I reconnect? I've installed many audio systems/accessories in vehicles but have never tried in the Mercedes so I want to be prepared.
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Old 11-23-2018, 09:35 PM
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You will probably only have to set the time after and will reset the trip meter 'from reset'. Be sure to close all glass fully to avoid any auto up/down switch issues.
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Old 11-24-2018, 06:24 AM
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No issues on the W212. There is a small backup battery under the dash that keeps all electronics up.
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