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Start Stop function

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Old 03-22-2020, 11:29 AM
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C180 W205 Exclusive
Start Stop function

Just came back from a 3800km trip with my 2015 C180 Exclusive and for some strange reason the start stop function has stopped working. Did not activate anywhere on the trip, nor in city driving.
Auxiliary battery was replaced in 2018 thus what might the issue? Centre console give green but dashboard stays amber.
Old 03-22-2020, 12:04 PM
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‘15 C300 4M Sport, ‘20 GLC300
Originally Posted by Coetzee
Just came back from a 3800km trip with my 2015 C180 Exclusive and for some strange reason the start stop function has stopped working. Did not activate anywhere on the trip, nor in city driving.
Auxiliary battery was replaced in 2018 thus what might the issue? Centre console give green but dashboard stays amber.
Maybe your climate control settings are blocking it?
Old 03-22-2020, 12:07 PM
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W205 2015
Please see picture below. Did you meet all conditions for this system to operate?

Old 03-23-2020, 09:05 AM
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Since it was 100% highway driving i had the car engaged in eco mode all the way, fuel consumption good, 6.5L/100km at average of 101km/h. Could the eco mode have influenced the start stop function?
Old 03-23-2020, 09:28 AM
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Originally Posted by Coetzee
Since it was 100% highway driving i had the car engaged in eco mode all the way, fuel consumption good, 6.5L/100km at average of 101km/h. Could the eco mode have influenced the start stop function?
You asked for help but you are not even replying to us or giving us feedback.
Old 03-23-2020, 11:44 AM
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Yes,
i can confirm that all the requirements as per the picture was met, however, as mentioned the car was in eco mode the whole way, not comfort as default setting.
Old 03-23-2020, 12:05 PM
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Originally Posted by Coetzee
Yes,
i can confirm that all the requirements as per the picture was met, however, as mentioned the car was in eco mode the whole way, not comfort as default setting.
As long as the car meets all conditions i sent you start/stop will work on all modes except S+
i never liked this start/stop




Old 03-23-2020, 04:48 PM
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If you figure out why start/stop isn’t working please let the rest of us know. Many of us would pay to make it not work lol.
Old 03-23-2020, 04:53 PM
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Originally Posted by CW3SF
If you figure out why start/stop isn’t working please let the rest of us know. Many of us would pay to make it not work lol.
Keep in mind all you need to do is disconnect the small two-wire connector attached to the negative battery terminal. I unplugged mine and taped/zip tied it out of the way several months ago and it has been SO great.

No other systems in the vehicle are affected by doing this.
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Old 03-23-2020, 05:50 PM
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Originally Posted by diamondsilver16
Keep in mind all you need to do is disconnect the small two-wire connector attached to the negative battery terminal. I unplugged mine and taped/zip tied it out of the way several months ago and it has been SO great.

No other systems in the vehicle are affected by doing this.
Thanks for the info. That’s awesome.

I see you mention it doesn’t affect other systems. To clarify, Does this disconnect cause any warning lights on the dash or set any trouble codes?
Old 03-23-2020, 05:53 PM
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Originally Posted by CW3SF
Thanks for the info. That’s awesome.

I see you mention it doesn’t affect other systems. To clarify, Does this disconnect cause any warning lights on the dash or set any trouble codes?
No, none.
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Old 03-23-2020, 06:51 PM
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When your main battery is 80% capacity, stop/start eco system won't work.

Go-to auto parts store and have your battery tested.
Old 03-23-2020, 11:17 PM
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W205 2015
Originally Posted by stockbmw
When your main battery is 80% capacity, stop/start eco system won't work.

Go-to auto parts store and have your battery tested.
I sent him the conditions. He replied that his car met all conditions. So I assume he is sure that his battery is sufficiently charged?
Old 04-30-2020, 02:41 PM
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Gt63s 2019, GLC63s 2017
ECO Start Stop OFF ECO Start Stop OFF
Module
Old 04-30-2020, 02:58 PM
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Gt63s 2019, GLC63s 2017
ECO Start Stop OFF ECO Start Stop OFF
ECO Start Stop OFF ECO Start Stop OFF
Module
Old 05-01-2020, 07:17 PM
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Originally Posted by CW3SF
If you figure out why start/stop isn’t working please let the rest of us know. Many of us would pay to make it not work lol.
just unplug the two pin harness on the battery negative terminal and its disabled.
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