ECO STOP-START ISSUE

Herman C

New Member
Joined
Feb 1, 2021
Messages
5
Reaction score
1
Your Mercedes
2014 MB E Class (W212)
Hi all. On cold start when turning on the ignition the stop-start amber ECO light fires up as expected and the light is green on the override dashboard button. The moment you start the car the amber ECO light disappears and the green light on the override button is dead and the stop-start function is not working. After restarting the engine everything works fine. Anyone else had this issue before? I recently replaced the auxiliary battery.
 

Gazwould

Senior Member
Joined
Oct 28, 2018
Messages
2,596
Reaction score
1,773
Your Mercedes
C250 CDI
His car fixed itself .

We are lead to believe a whole bunch of stuff from car manufacturers and the gubberment but they are getting caught out all the time .
 

John Laidlaw

Senior Member
Joined
Nov 15, 2013
Messages
26,373
Reaction score
9,163
Location
Wirral
Your Mercedes
Land Rover Discovery 4
Welcome , it's likely too cold for all that stuff to be working
 

Steve@Avantgarde

Forum Supporter
Authorised Forum Supporter
Joined
Dec 8, 2009
Messages
7,331
Reaction score
2,000
Location
Bristol/Somerset
Website
www.avantgarde-automotive.co.uk
Your Mercedes
E300 Coupe AMG Line PP/NE, SLR McLaren Roadster, SL55 & C32AMG
Read the manual.....

The stop start will likely disable within the 15mins of driving and is temperature dependent also depending on what consumers are switched on as well.

Or your battery is starting to loose its hold and crank capacity.
 

Jasons76

Senior Member
Joined
May 12, 2013
Messages
173
Reaction score
42
Location
Suffolk
Your Mercedes
W204 c220 cdi AMG sport estate
mine did that before christmas i replaced the main battery between christmas and new year and its been fine ever since.
 

richlumb

Senior Member
Joined
Jun 5, 2020
Messages
510
Reaction score
506
Your Mercedes
GLC 350d
Certain conditions need to be met for the stop start to work , temperature is one of them conditions. They all the same mine doesn’t work the same at min either
 
OP
H

Herman C

New Member
Joined
Feb 1, 2021
Messages
5
Reaction score
1
Your Mercedes
2014 MB E Class (W212)
  • Thread Starter
  • Thread starter
  • #8
Good day all. Thank you for all your feedback. Maybe I did not make myself clear enough. When turning on the ignition first time in morning whilst engine is cold, all appears to be normal (amber ECO light is on (dashboard) and green light is on (on-off switch). Then when starting the car first time in the morning (cold start), the amber ECO light disappears and the green light on on-off switch is “dead” and when you press the switch nothing happens. The only way to get the stop-start system back is by switching off the engine and restarting the car. During the day all works just fine. It has something to do with first start / cold start. Thank you
 

anyweb

Senior Member
Joined
Jul 15, 2005
Messages
3,150
Reaction score
364
Age
57
Location
Sweden
Website
www.niallbrady.com
Your Mercedes
c238,w120 (diesel)
you need to check your battery, if it's not charged to a certain level then the start/stop functionality will be disabled (will not even try). In cold weather this is common as the battery has to work extra hard to start the car, so to resolve, go for a one or two hour drive to fully charge your battery and the next day you should notice a difference, if not, then perhaps it's time to consider changing the battery.
 
Last edited:

A.J.

Senior Member
Joined
May 31, 2015
Messages
21,258
Reaction score
9,581
Location
Norwich. UK
Your Mercedes
UnMerc - 2020 VW Polo 2.0t GTi Plus, DSG. Flash Red, Traditional VW GTi Tartan seat trim.
you need to check your battery, if it's not charged to a certain level then the start/stop functionality will be disabled (will not even try). In cold weather this is common, so to resolve, go for a one or two hour drive to fully charge your battery and the next day you should notice a difference, if not, then it's time to consider changing the battery.

Non essential journey, contrary to our Covid Lock Down instructions. However every other week I do just that, maybe not two hours but certainly close to one hour :rolleyes: :)
 

anyweb

Senior Member
Joined
Jul 15, 2005
Messages
3,150
Reaction score
364
Age
57
Location
Sweden
Website
www.niallbrady.com
Your Mercedes
c238,w120 (diesel)
ah i didn't think of that, I live in Sweden so we can drive whenever we want for as long as we want.
 

Jasons76

Senior Member
Joined
May 12, 2013
Messages
173
Reaction score
42
Location
Suffolk
Your Mercedes
W204 c220 cdi AMG sport estate
Good day all. Thank you for all your feedback. Maybe I did not make myself clear enough. When turning on the ignition first time in morning whilst engine is cold, all appears to be normal (amber ECO light is on (dashboard) and green light is on (on-off switch). Then when starting the car first time in the morning (cold start), the amber ECO light disappears and the green light on on-off switch is “dead” and when you press the switch nothing happens. The only way to get the stop-start system back is by switching off the engine and restarting the car. During the day all works just fine. It has something to do with first start / cold start. Thank you
it will be the main battery mine did the exactly the same thing as you are describing
 
OP
H

Herman C

New Member
Joined
Feb 1, 2021
Messages
5
Reaction score
1
Your Mercedes
2014 MB E Class (W212)
  • Thread Starter
  • Thread starter
  • #13
Good day all. Thank you for all the valuable feedback. I will replace the main battery and let you know in due course.
 

Tony Dyson

Senior Member
Joined
Aug 26, 2018
Messages
4,038
Reaction score
2,585
Location
God's Country
Your Mercedes
2014 C 220 CDI W204 OM 651
You'll be wasting your money if the battery doesn't need changing, have you tested it or had it tested?
Your target is 12.6v without the engine running and around 14.6 with the engine running.
Have these symptoms recently developed or have you just decided to do something about them?
How long have you had the car and were these symptoms present from the beginning?
 

A.J.

Senior Member
Joined
May 31, 2015
Messages
21,258
Reaction score
9,581
Location
Norwich. UK
Your Mercedes
UnMerc - 2020 VW Polo 2.0t GTi Plus, DSG. Flash Red, Traditional VW GTi Tartan seat trim.
As Tony says, before you go and buy a battery get it drop tested first, could save you a few quid :)
 

John Laidlaw

Senior Member
Joined
Nov 15, 2013
Messages
26,373
Reaction score
9,163
Location
Wirral
Your Mercedes
Land Rover Discovery 4
Although, assuming the battery is the original 2014 one, it's 7 years old, my 212 needed a change at 4 years, seemed a bit premature but nowadays 5 years is about it...
 

ajlsl600

Senior Member
Joined
Nov 18, 2013
Messages
9,089
Reaction score
6,119
Location
france
Your Mercedes
clk3202001,sl6002003 with everything regrettably sold ,A class 170cdi auto. NG/TF1800 ML250
Yup in 2001 my new clk batt lasted ten yr. A class now shot in 6 sure ml will be in 5 . Two things ,more electronic crxx to run and maker prob lowering stds to reach a more acceptable ( to them,) dtf point.
In a nutshell .nothing modern lasts ! Just as one gets used to it one is looking to replace it.or in my case plannin to manage without it. Want something to last,buy something old !
 

John Laidlaw

Senior Member
Joined
Nov 15, 2013
Messages
26,373
Reaction score
9,163
Location
Wirral
Your Mercedes
Land Rover Discovery 4
Yup in 2001 my new clk batt lasted ten yr. A class now shot in 6 sure ml will be in 5 . Two things ,more electronic crxx to run and maker prob lowering stds to reach a more acceptable ( to them,) dtf point.
In a nutshell .nothing modern lasts ! Just as one gets used to it one is looking to replace it.or in my case plannin to manage without it. Want something to last,buy something old !
I lit the touchpaper again there..... :p :D
 

malcolm E53 AMG

Senior Member
Joined
Aug 21, 2005
Messages
7,082
Reaction score
4,735
Although, assuming the battery is the original 2014 one, it's 7 years old, my 212 needed a change at 4 years, seemed a bit premature but nowadays 5 years is about it...

Yes, another consequence of Stop/Start demands - mine lasted 6 years
 

Gazwould

Senior Member
Joined
Oct 28, 2018
Messages
2,596
Reaction score
1,773
Your Mercedes
C250 CDI
Not very Eco is it...

So ordinary lead acid of good quality and the same size good for 50,000 starts .

An AGM 360,000 starts .

Yet people are replacing AGM not because it's gone or slow starting the car but because this wrecking ball abomination of a so called Eco feature is thankfully no longer working .



My AGM is 10 years old and sub 80K and it's days are numbered as only charges to 12 / 12.1V but starts the car no problem .


The last 110 lead acid battery I replaced was 12.5 years old and the car had done 173K !
 


Chris Knott Insurance, see oursticky posts here!
www.ckinsurance.co.uk
Top Bottom