Stop/Start not working?
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MB
Stop/Start not working?
Had had my C300 for almost a week and over the last two days I've commuted to and from work, my stop/start has not been working. I have a lot of stop and go traffic, and at a full stop the engine stays on. The system worked just fine earlier this week.
Any ideas on what the problem could be?
Any ideas on what the problem could be?
Out Of Control!!
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2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
Does it turn green? Or stay yellow?
If Eco light not even on, there may be a fault code thrown with Eco system
I had a bad crankshaft position sensor
If Eco light not even on, there may be a fault code thrown with Eco system
I had a bad crankshaft position sensor
Thread Starter
Junior Member
Joined: Nov 2014
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MB
Out Of Control!!
Joined: Jun 2004
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2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
Does the green Eco come on the dash and the engine still doesn't stop?
Then you have a defective system and need diagnostics
Then you have a defective system and need diagnostics
Thread Starter
Junior Member
Joined: Nov 2014
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MB
Out Of Control!!
Joined: Jun 2004
Posts: 13,799
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2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
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Joined: Dec 2014
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From: Waterloo, Ontario Canada
C300 4Matic Tenorite Grey
Out Of Control!!
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2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
The Eco button on the center console has a green light that you can toggle on and off
I am not talking about this
I am talking about the dash info cluster right in front of the driver... You... Does it say ECO in green when you are at a stop?
I am not talking about this
I am talking about the dash info cluster right in front of the driver... You... Does it say ECO in green when you are at a stop?
Thread Starter
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MB
It does not, however it would be green at a stop when it was working a few days ago.
Out Of Control!!
Joined: Jun 2004
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2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
Basically it may not be meeting the many variables that need to be active in order for it to stop the engine
It may possibly still be working ok, just not finding all the variables to be active in order to shut off
Take it in, see if Benz says differently
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Joined: Dec 2014
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From: Romania
W205 250cdi 4matic, amg ext/int, 485 suspension
You should read owner manual as it explains quite in details the conditions needed for the Eco to work / activate ... The system is having a lot of variables ...
If you consider it should be enabled and it does not work, I would suggest you check for some days and then report issue to the dealer.
I had a similar problem on my w204 after 1 year - solution was replacing the aux battery
Amo
If you consider it should be enabled and it does not work, I would suggest you check for some days and then report issue to the dealer.
I had a similar problem on my w204 after 1 year - solution was replacing the aux battery
Amo
Thread Starter
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MB
Thanks.
A few big variables:
Since I've been driving when it's 5 degrees out and with the heat on, now I can see why the start/stop hasn't been working.
A few big variables:
- The outside temperature is within the range that is suitable for the system.
- The set temperature for the vehicle interior has been reached.
Since I've been driving when it's 5 degrees out and with the heat on, now I can see why the start/stop hasn't been working.
You should read owner manual as it explains quite in details the conditions needed for the Eco to work / activate ... The system is having a lot of variables ...
If you consider it should be enabled and it does not work, I would suggest you check for some days and then report issue to the dealer.
I had a similar problem on my w204 after 1 year - solution was replacing the aux battery
Amo
If you consider it should be enabled and it does not work, I would suggest you check for some days and then report issue to the dealer.
I had a similar problem on my w204 after 1 year - solution was replacing the aux battery
Amo
Super Member
Joined: Mar 2009
Posts: 911
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From: Ottawa, Canada
2014 C63 507, 2012 R350
I know what you are talking about, we do not have an ECO light like the E Class does.
Junior Member
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From: Cleveland, Ohio
'15 C300 4Matic
Mine hasn't worked for over a week. Then again, its been around 0-10 degrees outside every day I drive to and from work. I just figured it was too much strain on the system to start/stop in these frigid temps. I figured if it didn't work when it's 50 degrees again, maybe I have an issue.
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W205
Senior Member
Joined: Nov 2014
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From: Columbus, GA
'25 MB GLE 450, w/airmatic
I've learned that if you have a light foot on the brake, stop-start doesn't engage. Press the pedal a little harder and the engine shuts off.
If you press the pedal too hard and the engine shuts off, let up on the brake pedal, keeping it pressed just enough to keep you stopped.
If you press the pedal too hard and the engine shuts off, let up on the brake pedal, keeping it pressed just enough to keep you stopped.
Junior Member
Joined: Feb 2015
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2015 Mercedes Benz C300 Sport
Had had my C300 for almost a week and over the last two days I've commuted to and from work, my stop/start has not been working. I have a lot of stop and go traffic, and at a full stop the engine stays on. The system worked just fine earlier this week.
Any ideas on what the problem could be?
Any ideas on what the problem could be?
.
Junior Member
Joined: May 2015
Posts: 22
Likes: 0
From: Portugal
C300h
I've the same issue in my C300 Hybrid, I'm totally disappointed with it, it completely breaks the hybrid function 
Have contacted the dealer, they have done a lot of tests and found "no problems".
Maybe to cold for it right now, let's see if it improves as the spring begins.
If anyone has an hint please share.
Have contacted the dealer, they have done a lot of tests and found "no problems".
Maybe to cold for it right now, let's see if it improves as the spring begins.
If anyone has an hint please share.
