Amir Adhha

Can I disconnect the battery.... and reconnect it when I’m back from a 2 month holiday. Frequently leave my car for 1-2 months at a stretch in standby mode .. it’s fine but a real pain as have to run ( idle) the car for 3-4 hrs despite charging the battery with an Ext charger before the standby mode allows me to access it ( if not it reads battery insufficient for standby mode ) .

When I first got the car( didn’t know about the standby mode) and had to get MB assistance to come down and jump start the car a few times and finally battery died after 1 year.. had to change it ... and even then they(MB) did not inform me about the standby mode 🙄. ... they were the ones that told me to keep the car running in idle x 3-4 hrs to charge .

I still have an older E300 W212 .... no issues leaving it for 1-2 months at all .. regret buying the new W213😬

2012 merc amg

Simply leave the car on a battery maintainer charger that’s the proper way to store your car.

rraisley

In every newer car I've had, disconnecting the battery causes all kinds of things to reset, possibly using up those 3-4 hours to get everything back where it belongs. Sounds like Standby Mode is the best option, along with a trickle charger (occasionally, if not continuously).

bah212

Batterey maintainer aka trickle charger is the answer - very economical ones such as Battery Tender can be had for about $30 - or what many consider to be the best solution is a CTEK smart charger