KCSam

I recently noticed that my ECO start/stop functionality has stopped working. The light is still it green, so I know it is on, but the engine has not shutoff at any point when I come to a stop now in several weeks. Has anyone else noticed this and if so, what was the resolution? I thought I would check here before contacting my tech rep at MB.

cyber3d

Yeah, I noticed that same symptom in the past couple of months on my GLC 300 2016. I plan on taking her in.

Tim_P

As someone who paid for an aftermarket hack to permanently leave ECO Start/Stop OFF, this sounds like a dream situation!

Teckno

Stop / Start will get worse and a warning will start to appear on mini front screen.
Aux Battery is NOT a battery - it is a voltage regulator with a capacitor. They seem to fail around 6 year mark.
Highly recommend using an overnight trickle charger to recharge car main battery. You might find the stop / start will work again. Main battery might be failing too.
Stop/start module is under front passenger floor carpet. MB price around $300 for small black box, that is simple plug and play, EBay will have a Bosch one around $100 I think.

DanD.

Areed, I bought the tool to disable this useless option even before I bought my car ))
Frequent engine stop/start must have impact on all components in a long run.
This is just my personal opinion.

dadalook

I was thinking about it but I thought any aftermarket modification will void MB warranty. Won't it?

DanD.

If you so worry, you can use the tool and turn it back on before taking it for service.
Also, if problem with brake cylinder they need to prove your mods could cause this.

dadalook

That I dont know. How? Heck I dont even have the tool yet. Is it the one from Ebay?

DanD.

This is one I bought from Belarus, now this country under heavy sanctions, not sure if they get parts anytime soon.

https://www.ebay.com/itm/MERCEDES-ca...-127632-2357-0

I think I saw similar tool made in US, it was a discussion on this forum. Try to search.