2020 G550 Start/Stop issue
So, when you get into the car and start, it automatically starts with ECO mode and drives with it and automatically stops in a signal when I hit brake ? And automatically starts when I throttle ?
Possible ?








Can you steer a lost sheep (me) to this dongle you speak of?? I have searched a few different keywords and can’t find anything....?




The Best of Mercedes & AMG




Might be the best 150.00 I have spent. Takes all of about 10 seconds to install:
1) Turn ignition on
2) Plug in adaptor to OBD 2
3) Press the ignition button 2x
4) Once the light on the adaptor turns off, remove it from the OBD 2
5) Remove adapter
6) Done
The car will now remember the last eco start/stop setting.
I am not affiliated, just a happy customer.
https://www.midcityengineering.com/p...s-benz-ecopcm/
Might be the best 150.00 I have spent. Takes all of about 10 seconds to install:
1) Turn ignition on
2) Plug in adaptor to OBD 2
3) Press the ignition button 2x
4) Once the light on the adaptor turns off, remove it from the OBD 2
5) Remove adapter
6) Done
The car will now remember the last eco start/stop setting.
I am not affiliated, just a happy customer.
https://www.midcityengineering.com/p...s-benz-ecopcm/




For the modes, with mine it is basically whatever mode you last had it in, it will stay in.
The description makes it sound like there are different settings, however, I called tech support and for the version I got, they said it just memorizes the last eco setting.
For the modes, with mine it is basically whatever mode you last had it in, it will stay in.
The description makes it sound like there are different settings, however, I called tech support and for the version I got, they said it just memorizes the last eco setting.




I called mid-city, as it was my understanding that it was a simple OBD 2 plug in.
When I spoke to their tech support, they said the directions that I was referencing apply to a different adaptor that memorizes the last drive mode and allows the user to set the eco start/stop how they want. So those instructions did not apply to me.
With that being said, after he told me that, I didn’t then confirm that they sold that drive mode memory mod for the 2019-2021 G wagons....it is possible that it only applies to the older Gs or a different model all together.
But if you are looking for a that ability, it would definitely be worth a call, IMO.
I called mid-city, as it was my understanding that it was a simple OBD 2 plug in.
When I spoke to their tech support, they said the directions that I was referencing apply to a different adaptor that memorizes the last drive mode and allows the user to set the eco start/stop how they want. So those instructions did not apply to me.
With that being said, after he told me that, I didn’t then confirm that they sold that drive mode memory mod for the 2019-2021 G wagons....it is possible that it only applies to the older Gs or a different model all together.
But if you are looking for a that ability, it would definitely be worth a call, IMO.
Might be the best 150.00 I have spent. Takes all of about 10 seconds to install:
1) Turn ignition on
2) Plug in adaptor to OBD 2
3) Press the ignition button 2x
4) Once the light on the adaptor turns off, remove it from the OBD 2
5) Remove adapter
6) Done
The car will now remember the last eco start/stop setting.
I am not affiliated, just a happy customer.
https://www.midcityengineering.com/p...s-benz-ecopcm/
Do you know how to unpair it with the vehicle so you can undo the change and use on another G? I have my G63 inbound and am installing this on my G550 for now.
I called mid-city, as it was my understanding that it was a simple OBD 2 plug in.
When I spoke to their tech support, they said the directions that I was referencing apply to a different adaptor that memorizes the last drive mode and allows the user to set the eco start/stop how they want. So those instructions did not apply to me.
With that being said, after he told me that, I didn’t then confirm that they sold that drive mode memory mod for the 2019-2021 G wagons....it is possible that it only applies to the older Gs or a different model all together.
But if you are looking for a that ability, it would definitely be worth a call, IMO.
















