I have a E350 2014, received the signal Auciliary Battery Malfunction. What is it? is it serious, should I take it to the Dealer under warranty?

Asked by ginoc Sep 21, 2015 at 07:35 AM about the 2014 Mercedes-Benz E-Class

Question type: Maintenance & Repair

I have a E350 2014, received the signal Auciliary Battery Malfunction. What is it? is it serious, should I take it to the Dealer under warranty?

7 Answers
188,395

Paul answered 8 years ago

This may help, Copy and paste....http://www.benzworld.org/forums/w212-e-class/1572334-auxillary-battery.html

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16,035

bobkat answered 8 years ago

If it is under warranty - take it to the dealer for inspection. IF it is a battery and if it is not under warranty - just tell the dealer "thank you" and go buy it elsewhere for a lot less money.

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190

Kenr14 answered 7 years ago

Small aux. Battery located under dash on drivers side, enables trans. To be shifted out of park if main power is lost.

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600

Jay_Emm1 answered 7 years ago

The auxiliary battery also is used in the ECO functions to restart the car when it 'shuts off' while stopped and operates the HOLD function (keeping the car from moving) while stopped for a traffic light.

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Jay_Emm1 answered 7 years ago

Also, the aux battery in my 2014 E350 is in the trunk under the spare tire.

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210

Alpine_41204 answered 7 years ago

Yes it is in the trunk, not in the dash. About $145 at the dealer.

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