Eco Mode Has Been Resurrected
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Junior Member
Joined: Nov 2016
Posts: 19
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From: Atlanta, Ga.
2016 E-350/ 2000 GMC Sierra
Eco Mode Has Been Resurrected
I bought a used 2016 E-350 in 2019. I was pleased the Eco Mode did not cut the engine off nearly as much as my old C-300. I recently had to replace the main battery in the E-350 and now the ECO Mode seems to cut the engine off at every stop. Can anyone explain why replacing the main battery would resurrect the Eco Mode? I have not changed the battery on the trunk.
MBWorld God!
Joined: Dec 2019
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I bought a used 2016 E-350 in 2019. I was pleased the Eco Mode did not cut the engine off nearly as much as my old C-300. I recently had to replace the main battery in the E-350 and now the ECO Mode seems to cut the engine off at every stop. Can anyone explain why replacing the main battery would resurrect the Eco Mode? I have not changed the battery on the trunk.
Out Of Control!!
Joined: Apr 2019
Posts: 11,923
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From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
ECO Resurrected ... Hallelujah !!
I bought a used 2016 E-350 in 2019. I was pleased the Eco Mode did not cut the engine off nearly as much as my old C-300. I recently had to replace the main battery in the E-350 and now the ECO Mode seems to cut the engine off at every stop. Can anyone explain why replacing the main battery would resurrect the Eco Mode? I have not changed the battery on the trunk.
The ability to RESTART the engine comes on top of the list.
Battery Health is evaluated by a smart battery sensor that measures Temp, Amps, Volts. The battery internal resistance and charge level are calculated under load by the sensor.
You can easily force a BATTERY-RELEARN by power cycling the small connector from your Hyundai sensor.
You'd want to do that after working on your charging circuit to better tailor the ALT voltage profile.
W212 can display the live Batt sensor Amps/Volts under "Engineering Menu"... an interesting scene to keep an eye on while driving on highways.
Last edited by CaliBenzDriver; Oct 21, 2021 at 02:12 PM.
MBWorld Fanatic!
Joined: Apr 2006
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From: Dallas-Ft.Worth,TX
2016 E350 Sport
I bought a used 2016 E-350 in 2019. I was pleased the Eco Mode did not cut the engine off nearly as much as my old C-300. I recently had to replace the main battery in the E-350 and now the ECO Mode seems to cut the engine off at every stop. Can anyone explain why replacing the main battery would resurrect the Eco Mode? I have not changed the battery on the trunk.
My 2016 E350 did exactly the same when I replaced the main battery (as others have posted), and I expect all cars do the same with a new main battery.
Last edited by DFWdude; Oct 24, 2021 at 11:43 AM.
