Start/Stop Technology
Thread Starter
Senior Member
Joined: Apr 2014
Posts: 387
Likes: 70
From: Meridian, Idaho
2022 4 Runner Pro, supercharged and lifted Lime Rush, 2018 E63s wagon Edition 1
Start/Stop Technology
Hi All,
This is the first car I've owned with the start/stop tech and I feel that this may shorten the life of the starter but also (unless there is a secondary oil pump that is continuously on during the engine off sequence at a stop light) may increase engine wear due to oil settling when off. Am I missing something or is the starter different than a traditional starter and what about extra engine wear? I'd really like to hear from you all as to your thoughts and/or expertise on this subject.
This is the first car I've owned with the start/stop tech and I feel that this may shorten the life of the starter but also (unless there is a secondary oil pump that is continuously on during the engine off sequence at a stop light) may increase engine wear due to oil settling when off. Am I missing something or is the starter different than a traditional starter and what about extra engine wear? I'd really like to hear from you all as to your thoughts and/or expertise on this subject.
MBWorld Fanatic!
Joined: Jul 2013
Posts: 2,591
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From: Toronto, Ont, Canda
go fast grocery getter wagon
I hate this feature. Some say it does not put extra wear on the starter, I really doubt this claim.
I simply engage the sport mode every single time I start my car and forget this nonsense.
I simply engage the sport mode every single time I start my car and forget this nonsense.
Member
Joined: Dec 2013
Posts: 111
Likes: 25
From: Canada
RS7
Hi All,
This is the first car I've owned with the start/stop tech and I feel that this may shorten the life of the starter but also (unless there is a secondary oil pump that is continuously on during the engine off sequence at a stop light) may increase engine wear due to oil settling when off. Am I missing something or is the starter different than a traditional starter and what about extra engine wear? I'd really like to hear from you all as to your thoughts and/or expertise on this subject.
This is the first car I've owned with the start/stop tech and I feel that this may shorten the life of the starter but also (unless there is a secondary oil pump that is continuously on during the engine off sequence at a stop light) may increase engine wear due to oil settling when off. Am I missing something or is the starter different than a traditional starter and what about extra engine wear? I'd really like to hear from you all as to your thoughts and/or expertise on this subject.
It's a fuel efficiency issue afaik, so they have to do it unfortunately.
Too bad there isn't an easy way to disable permanently.
Super Member
Joined: Jun 2010
Posts: 822
Likes: 160
2018 E63S Wagon
Doesn't it just stop the engine pre-detonation on some cylinders? Then the restart is just detonating the compressed cylinders combined with some drivetrain trickery? I was under the assumption that's why it doesn't stay "off" indefinitely at a long light or stop, because eventually just igniting the compressed cylinder won't work. But I could be completely wrong. I just know most systems don't use the main starter.
Last edited by Carac; Aug 9, 2018 at 04:23 PM.
Joined: Mar 2018
Posts: 1,410
Likes: 233
From: Socal and Norcal
MY17 S63AMG - MBUSA Buyback. MY16 SL63 - Sold MY19 W213 E63s. 2020 W213 E63s Wagon
I don’t think it’ll add extra wear on components because most newer cars has this. This is where your factory bumper to bumper comes into play if something does go wrong.
There is aftermarket module you can add to bypass this if that is something you want or just start in sports mode like others have mentioned.
There is aftermarket module you can add to bypass this if that is something you want or just start in sports mode like others have mentioned.
Senior Member
Joined: Dec 2017
Posts: 276
Likes: 77
2018 E63S
Hi All,
This is the first car I've owned with the start/stop tech and I feel that this may shorten the life of the starter but also (unless there is a secondary oil pump that is continuously on during the engine off sequence at a stop light) may increase engine wear due to oil settling when off. Am I missing something or is the starter different than a traditional starter and what about extra engine wear? I'd really like to hear from you all as to your thoughts and/or expertise on this subject.
This is the first car I've owned with the start/stop tech and I feel that this may shorten the life of the starter but also (unless there is a secondary oil pump that is continuously on during the engine off sequence at a stop light) may increase engine wear due to oil settling when off. Am I missing something or is the starter different than a traditional starter and what about extra engine wear? I'd really like to hear from you all as to your thoughts and/or expertise on this subject.
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Joined: Jul 2018
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535XIT, E63S
Yes, the starters for Eco start stop systems are different and designed for the additional start cycles so there shouldn't be a concern there. Also, the engines use a crank hall sensor that can tell the computer which cylinder is in the best position to start the engine quickly and smoothly. Extra fuel is added to that cylinder to help quicken the restart. In terms of wear due to oil settling, maybe if it sat for an hour or more but its literally only minutes or less and the engine will only activate start stop when it's up to operating temp. So there is no additional wear in this regard. Basically, any additional wear is accounted for and designed accordingly. Having said all that, I shut Eco Start Stop off every time I start my car because I find it annoying.
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Senior Member
Joined: Dec 2017
Posts: 276
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2018 E63S
The lubrication system for the turbos keeps running for several minutes after the engine is shut off to avoid heat soak and frying the bearings. This is why you can hear fans and such continuing to run in our E63's after we shut off the engine and walk away. Same thing happens when Eco Start Stop is functioning. There's really nothing to worry about with Eco Start Stop. Annoying, yes. Wear, no.
MBWorld Fanatic!
Joined: May 2017
Posts: 1,725
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From: Southern California
2018 E63S AMG
I would like to think that Mercedes put at least a little thought into what happens to a motor when it is shut off when hot (or cold) and frequently restarted.
I haven't had any qualms about using the feature on my car. When I picked it up in Germany and started off on our vacation the first time it turned off was a bit of a surprise. For the first day or two we turned off the feature, but after a bit got used to it. Now I leave it on when in comfort mode in town.
With the car averaging about 12.5 MPG on my short drive to work saving a bit of fuel here and there is fine with me.
I haven't had any qualms about using the feature on my car. When I picked it up in Germany and started off on our vacation the first time it turned off was a bit of a surprise. For the first day or two we turned off the feature, but after a bit got used to it. Now I leave it on when in comfort mode in town.
With the car averaging about 12.5 MPG on my short drive to work saving a bit of fuel here and there is fine with me.
Junior Member
Joined: Jan 2018
Posts: 52
Likes: 20
2018 E63S
Just disable it permanently for $140 and be done with it. Works like a charm and you can always turn it on with a press of a button.
https://m.ebay.com/itm/MERCEDES-ECO-...from=R40&rt=nc
https://m.ebay.com/itm/MERCEDES-ECO-...from=R40&rt=nc
Member
Joined: Apr 2018
Posts: 95
Likes: 9
From: California
2015 BMW 750Li, 2018 E63S AMG
Even the car manual indicates that the start-stop feature adds extra wear to certain components. I wouldn’t use it because I think it’s a useless feature. It saves you $1 in gas per week maybe, at the expense of extra wear on your ignition components. How is that a great deal for us, the customers?
Member
Joined: May 2018
Posts: 198
Likes: 37
2017 LR Disco HSE LUX, 2019 E63S, 2019 Sierra AT4
Even the car manual indicates that the start-stop feature adds extra wear to certain components. I wouldn’t use it because I think it’s a useless feature. It saves you $1 in gas per week maybe, at the expense of extra wear on your ignition components. How is that a great deal for us, the customers?
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BMW 5 Series, Buick Enclave
-SCR
Thread Starter
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Joined: Apr 2014
Posts: 387
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From: Meridian, Idaho
2022 4 Runner Pro, supercharged and lifted Lime Rush, 2018 E63s wagon Edition 1
I reread the supplemental manual for the wagon and found that by pressing the button on the console ("A") this will disable the start/stop feature as well as the cylinder deactivation and glide mode functions while driving in "C" mode. Problem is that every time the ignition is shut off and restarted in "C" mode these features are automatically reactivated and the button has to be pressed again. So I'll put up with this as it's a simple button to push but will probably activate it while on the freeway and such. I've got <1k miles so I'm still driving in "C".
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skoda octavia MkII 2.0
i've always questioned myself about this but I must trust that manufactures know what they are doing. the eco start and stop is been rolled on in every car on every brand, from the most cheap to the most expensive ones in Europe. i believe it is more annoying than actually be really more damaging in the medium turn to the car components
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Joined: Dec 2008
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From: San Diego
Hyperion's Candy-Coated 4 x 4
I reread the supplemental manual for the wagon and found that by pressing the button on the console ("A") this will disable the start/stop feature as well as the cylinder deactivation and glide mode functions while driving in "C" mode. Problem is that every time the ignition is shut off and restarted in "C" mode these features are automatically reactivated and the button has to be pressed again. So I'll put up with this as it's a simple button to push but will probably activate it while on the freeway and such. I've got <1k miles so I'm still driving in "C".
Member
Joined: Apr 2018
Posts: 95
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From: California
2015 BMW 750Li, 2018 E63S AMG
I’ll look it up again and let you know the page/location
