Junction10
New Member
W218 2016 CLS 220D
My ECO mode stopped working earlier this year. I just get the yellow ECO text on the dashboard and not the green box with inverted text, so that tells me it’s not activated…
I also noticed the air conditioning wasn’t pushing through chilled air when on its coldest setting, plus even when set at 20 degrees for example and when the ambient temp is between 18-22, I’d hear what sounds like air blowing across the top of a bottle coming from behind the vents..
My dealer checked the air con and said there’s nothing wrong with it - and that it doesn’t blow chilled air - it only ever gets (at most) 10 degrees BELOW the ambient temp.. which is strange because it USED to blow chilled air that would numb your fingers when I first had it, and so does my wife’s Nissan Juke..
Anyway, they said it’s the auxiliary battery.. I thought it might be a sensor in the heating matrix - which might be causing the ECO mode to not meet all the right parameters to be enabled (especially if it thinks it hasn’t met the correct ambient temp), but they were positive it’s the auxiliary battery.
So today, they fit a new auxiliary battery, which cost me £200 - parts and labour.
I don’t know what they’ve actually done because the ECO mode still doesn’t work and the text is still yellow, not green.
Drove home (30 minute journey) and start/stop didn’t engage once.
Thought maybe I need to give it a bit of a run-in (though should you, really, if it’s a brand new battery??) so gave it a blast down a dual carriageway… still yellow and disabled.
Not happy at having spent £200 for nothing… even more unhappy that they said it was fixed but clearly just turning on the ignition shows it isn’t…
Any ideas please?
J
My ECO mode stopped working earlier this year. I just get the yellow ECO text on the dashboard and not the green box with inverted text, so that tells me it’s not activated…
I also noticed the air conditioning wasn’t pushing through chilled air when on its coldest setting, plus even when set at 20 degrees for example and when the ambient temp is between 18-22, I’d hear what sounds like air blowing across the top of a bottle coming from behind the vents..
My dealer checked the air con and said there’s nothing wrong with it - and that it doesn’t blow chilled air - it only ever gets (at most) 10 degrees BELOW the ambient temp.. which is strange because it USED to blow chilled air that would numb your fingers when I first had it, and so does my wife’s Nissan Juke..
Anyway, they said it’s the auxiliary battery.. I thought it might be a sensor in the heating matrix - which might be causing the ECO mode to not meet all the right parameters to be enabled (especially if it thinks it hasn’t met the correct ambient temp), but they were positive it’s the auxiliary battery.
So today, they fit a new auxiliary battery, which cost me £200 - parts and labour.
I don’t know what they’ve actually done because the ECO mode still doesn’t work and the text is still yellow, not green.
Drove home (30 minute journey) and start/stop didn’t engage once.
Thought maybe I need to give it a bit of a run-in (though should you, really, if it’s a brand new battery??) so gave it a blast down a dual carriageway… still yellow and disabled.
Not happy at having spent £200 for nothing… even more unhappy that they said it was fixed but clearly just turning on the ignition shows it isn’t…
Any ideas please?
J