2011 E350 Aux Battery Malfunction Error - Page 2

12-21-2023 | 02:56 AM

#26

Arrie

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Joined: Oct 2010

Posts: 4,553

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From: Southern US

2010 E550, 273 Engine: 2012 S550, 278 Engine

Quote:

Originally Posted by pierrejoliat

My friend, I believe in the pre-facelifts, the one and only thing the auxiliary battery does is allow you to shift the car to neutral so you can tow it if the main battery goes dead?

In my 2010 E550 the AUX battery does other than just allows switching the gear. When my AUX battery went out, that is just recently did, the car did not have HOLD function, nor did the Distronic cruise control work. Charged the battery and all works. It is obviously time to get a new one soon. It has been ok for about a month now since re-charging but for how long?

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