S_W222

How often does your ECO Engine Start/Stop function works on your car? 90% of my drive is in city so am not supersized that mine never worked for the past 60 days!|
My question is, for those who have combined city/highway drive, do you really see this function works on daily bases or does it hardly work also on your car?

I know there is a bunch of checkpoints before it can work, but am asking in general regardless... ?

as.thompson

Mine hasn't worked since I had a long freeway drive about a month ago. It only seems to work after a long (100 miles +) high speed drive. I suspect aux battery charge but that is just suspicion, no codes from the dealer. And on the last service when I asked them to check it they said the codes were for my hood not completely closed! That was a strange one that even the service guys couldn't understand.

JohnDoeMB

Ask them to do midtronics aux battery test. If it fails then that's the root of your problem.

My eco stop start stopped working after a little bit, the dealer took a look at the battery and that was the first thing.

It's a shame there are no inboard diagnostics for or voltage measuring for the batteries and even something as simple as the oil level... Even a Chevy Cruz has the latter...

S_W222

Who cares even if the battery is dead!! Honestly this feature is the most useless option, and if anything i think it causes more wear on the engine. If it stops working i’d be happy at least i know I don’t need to keep pushing the bottom off every morning
anyway i think it’s okay cause it always works after highway driving but it a shame it needs highway drive only to charge!!

Mitch Alsup

I am happy that this function has quit working on my 2 MBs (S-600 and GLS 450).

1bad540

very rarely does mine stop when it does It pisses me off, im in city driving mostly.

OnlyGerman

The start/stop in the w222 is nearly perfect. Much better than in other cars where you hear and feel it kick back off/on.

TNS550

Agree. The feature on my 17 MDX is very rough, with more hesitation at restart.

DABRONX

Actually I totally disagree as in my 16 bmw 750 I barely even knew it had even happened. I have complained about it forever in the S550 and wish there was a way to shut it off. Having to remember to press that button is ridiculous in a car of that price point.

Maybe it maters car to car but in the BMW I swear i had to look at the tach to know it even occurred in the Benz you feel it kick in when the car restarts.

Quadrobenz

The ECO start/stop works all the time on all three of my AMG’s if I forget to push the off button. Contrary to other experience I find the shutoff and restart more noticeable in the BMW than the Mercedes. But I am not comparing similar cars. I am driven frequently to the airport in a new BMW740. I can tell instantly when the engine starts or stops and as a passenger it is annoying. On mine the stop is harder to tell but I am comparing a V12 in the AMG to a six in the the 740.

DABRONX

I do believe it is not the same in each car but a v12 is a smoother engine in every way so I would assume starting it would be smoother in general to a s550.

In any event there should be a easier defeat switch instead of having to push each time. Not a big deal if not a daily ride but if your in and out of car it gets annoying.