Eco/Stop Start Problems
#1
Eco/Stop Start Problems
Hi all,
Just picked up a 2013 E220 W212 and noticed an issue with the stop start. The previous owner didn’t like it so always turn off the eco button.
the ECO logo on the instruments comes up and goes green fine. I will pull up to come lights and when my foot is on the brake it cuts off for stop/start as expected. But after 2/3 seconds without me moving a muscle kticks back in and the car tries to lunges forward quite heavily.
anyone seen this before or have any idea?
Thanks, Griff
Just picked up a 2013 E220 W212 and noticed an issue with the stop start. The previous owner didn’t like it so always turn off the eco button.
the ECO logo on the instruments comes up and goes green fine. I will pull up to come lights and when my foot is on the brake it cuts off for stop/start as expected. But after 2/3 seconds without me moving a muscle kticks back in and the car tries to lunges forward quite heavily.
anyone seen this before or have any idea?
Thanks, Griff
#2
Hi all,
Just picked up a 2013 E220 W212 and noticed an issue with the stop start. The previous owner didn’t like it so always turn off the eco button.
the ECO logo on the instruments comes up and goes green fine. I will pull up to come lights and when my foot is on the brake it cuts off for stop/start as expected. But after 2/3 seconds without me moving a muscle kticks back in and the car tries to lunges forward quite heavily.
anyone seen this before or have any idea?
Thanks, Griff
Just picked up a 2013 E220 W212 and noticed an issue with the stop start. The previous owner didn’t like it so always turn off the eco button.
the ECO logo on the instruments comes up and goes green fine. I will pull up to come lights and when my foot is on the brake it cuts off for stop/start as expected. But after 2/3 seconds without me moving a muscle kticks back in and the car tries to lunges forward quite heavily.
anyone seen this before or have any idea?
Thanks, Griff
#3
MBWorld Fanatic!
Joined: Jan 2009
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From: V E G A S
1922 Ford Model T / no OBD
The system needs to meet up to 12 parameters to kick-in. Usually it is battery going bad, but with 2 batteries changing parts without proper scanning can turn costly.
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KEY08 (07-10-2019)
#5
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From: V E G A S
1922 Ford Model T / no OBD
I bought trunk battery just weeks ago at FCP Euro.
They have been slightly more expensive than other on line places, but give you lifetime warranty.
Since those batteries die in 2-3 years, I figure out I can use it at least twice.
They have been slightly more expensive than other on line places, but give you lifetime warranty.
Since those batteries die in 2-3 years, I figure out I can use it at least twice.
#6
What is the model name or spec of the trunk battery?
#7
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Joined: Mar 2014
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From: Northwest Illinois
2014 E350 also restored: 1969 Camaro convertible SS 1957 Chevy Belair 2dr hardtop
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#8
Thanks dbldpr, I presume the fuse should be ok or if it had blown ECO wouldn't work at all right? Can you pull this fuse to disable it permanently?
#9
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Joined: Mar 2014
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From: Northwest Illinois
2014 E350 also restored: 1969 Camaro convertible SS 1957 Chevy Belair 2dr hardtop
Yes from what I have read on the forum. The fuse is only for the eco start stop. I have the module to disconnect it but later in the forum they posted how to disable it with the fuse. I do not know which one but if you check the forum you should be able to find it.
#10
And as has been noted, there are a dozen different reasons the engine management system will not let the engine stay off. A weak battery is one but there are lots of other possibilities. Throwing parts at it can get pricey. As was also noted above, it really makes sense to read the code(s) that are stored when the system forces the engine back on. That way you'll know what's up rather than guessing. A decent independent shop will be able to pinpoint the issue in minutes.
#11
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From: Dallas-Ft.Worth,TX
2016 E350 Sport
And as has been noted, there are a dozen different reasons the engine management system will not let the engine stay off. A weak battery is one but there are lots of other possibilities. Throwing parts at it can get pricey. As was also noted above, it really makes sense to read the code(s) that are stored when the system forces the engine back on. That way you'll know what's up rather than guessing. A decent independent shop will be able to pinpoint the issue in minutes.
Are you saying that uncommanded engine restarting indicates a fault that needs to be investigated? I want to have my Aux battery tested before the warranty expires, and this might be a good reason to ask for it.
#12
A penney drops here. Eco Stop shuts off my engine at the traffic stop light, as designed. But after 20-30-seconds or so, the engine restarts on its own. (My foot is still on the brake) I thought this normal (30-secs of gas saved is the intent), although the red traffic light has another minute to go before turning green.
Are you saying that uncommanded engine restarting indicates a fault that needs to be investigated? I want to have my Aux battery tested before the warranty expires, and this might be a good reason to ask for it.
Are you saying that uncommanded engine restarting indicates a fault that needs to be investigated? I want to have my Aux battery tested before the warranty expires, and this might be a good reason to ask for it.
My car did that (20-30 seconds) from when I picked it up new. It was only after it was in for it's 2K rear-end service that I realized it wasn't normal, because the loaner's engine stayed off far longer. I called it in to the SA and they discovered a bad battery.
#15
The engine management controller logs the reason it overrides eco stop. It's not the battery throwing a code per se, but it's an entry that the engine was force restarted due to low voltage.
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Grifff (07-13-2019)
#16
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From: V E G A S
1922 Ford Model T / no OBD
$150 buys you MB-oriented scanner, what is about what dealers charge for 1-time troubleshooting.
There is no good reason to not own one and stop wasting forum time on something you don't want to check
https://www.fcpeuro.com/products/mer...mer-0009829308 this is the aux battery for ECO option. As I said, you can find it cheaper, but not with lifetime warranty. Than I think FCP runs Pozi scheme, so I hope to get my replacement before it collapse.
There is no good reason to not own one and stop wasting forum time on something you don't want to check
https://www.fcpeuro.com/products/mer...mer-0009829308 this is the aux battery for ECO option. As I said, you can find it cheaper, but not with lifetime warranty. Than I think FCP runs Pozi scheme, so I hope to get my replacement before it collapse.
Last edited by kajtek1; 07-14-2019 at 03:30 PM.