Eco mode not working
Thread Starter
Member
Joined: Jan 2016
Posts: 122
Likes: 31
w164
Eco mode not working
Hello folks.
w166, ML350 Bluetec: My eco mode have stop working. The lamp at the button show green, but no ECO in instrument cluster. Eco mode seems to be disabled. At the same time this started to happen i also get code 111B00 "component nox sensor upstream scr has a plausibility error" Its NO check engine light, everything seem fine, and i see adblue fluid is folwing. Nox sensors is also new 6 months ago.
Its colder her in norway now, and i can see the battery voltage is 12.01 Volts when tha car stands stil. Is 12,01 volts to low, and could it be the reason for this two errors? (eco mode and upstream nox sensor) Again, NO check engine light.
Regards
Norweay
w166, ML350 Bluetec: My eco mode have stop working. The lamp at the button show green, but no ECO in instrument cluster. Eco mode seems to be disabled. At the same time this started to happen i also get code 111B00 "component nox sensor upstream scr has a plausibility error" Its NO check engine light, everything seem fine, and i see adblue fluid is folwing. Nox sensors is also new 6 months ago.
Its colder her in norway now, and i can see the battery voltage is 12.01 Volts when tha car stands stil. Is 12,01 volts to low, and could it be the reason for this two errors? (eco mode and upstream nox sensor) Again, NO check engine light.
Regards
Norweay
Super Member
Joined: Sep 2018
Posts: 706
Likes: 114
From: Los Angeles, CA
'22 GLE 350 | '15 ML250 | '87 560SL | '19 GLC 300 | '12 C250 (sold) | '02 ML500 | '98 C230
Hello folks.
w166, ML350 Bluetec: My eco mode have stop working. The lamp at the button show green, but no ECO in instrument cluster. Eco mode seems to be disabled. At the same time this started to happen i also get code 111B00 "component nox sensor upstream scr has a plausibility error" Its NO check engine light, everything seem fine, and i see adblue fluid is folwing. Nox sensors is also new 6 months ago.
Its colder her in norway now, and i can see the battery voltage is 12.01 Volts when tha car stands stil. Is 12,01 volts to low, and could it be the reason for this two errors? (eco mode and upstream nox sensor) Again, NO check engine light.
Regards
Norweay
w166, ML350 Bluetec: My eco mode have stop working. The lamp at the button show green, but no ECO in instrument cluster. Eco mode seems to be disabled. At the same time this started to happen i also get code 111B00 "component nox sensor upstream scr has a plausibility error" Its NO check engine light, everything seem fine, and i see adblue fluid is folwing. Nox sensors is also new 6 months ago.
Its colder her in norway now, and i can see the battery voltage is 12.01 Volts when tha car stands stil. Is 12,01 volts to low, and could it be the reason for this two errors? (eco mode and upstream nox sensor) Again, NO check engine light.
Regards
Norweay
Junior Member
Joined: Jan 2015
Posts: 40
Likes: 9
From: Passaic/Bergen County New Jersey
2013 C350 4MATIC Coupe, 2017 GLE 350 4MATIC P3
Senior Member
Joined: Apr 2014
Posts: 259
Likes: 17
Jetta TDI [Daily] , Audi A8L [Sold], '12 STI [Sold], '06 E55 [Sold], '05 S500, '15 GLA250
I don't own an ML yet, but I'm planning to finalize my purchase on one in the next few days... current stable is '06 S500, '15 GLA, and an '06 E55 that terribly regret selling.
Back to the OP's question...
I recently had to change the battery in my wife's GLA-250. I was getting random error codes and heavy cranking... now thinking back on it, the first sign of the battery issue was the failure to start/stop when ECO mode was active. A few weeks after that stopped working, small 'gremlins' started sporadically occuring that got worse and worse.
Could be coincidence, but the battery was original and over 5 years old at that point, and replacing it fixed everything. I know it's silly, but I considered the ECO mode an early warning sign. Might be worth the peace of mind if you're still on original battery.
Back to the OP's question...
I recently had to change the battery in my wife's GLA-250. I was getting random error codes and heavy cranking... now thinking back on it, the first sign of the battery issue was the failure to start/stop when ECO mode was active. A few weeks after that stopped working, small 'gremlins' started sporadically occuring that got worse and worse.
Could be coincidence, but the battery was original and over 5 years old at that point, and replacing it fixed everything. I know it's silly, but I considered the ECO mode an early warning sign. Might be worth the peace of mind if you're still on original battery.
Senior Member
Joined: Jul 2017
Posts: 487
Likes: 114
From: DFW, TX
Ml350 bluetec
Battery life of 5 years is about the norm. My 2014 showed no symptoms of the battery going bad until 1 day in 2019, when I tried to start it, it just "clicked". Connected by Jumper Starter Battery and it started fine, replaced the battery and it's been fine ever since.
