Turbo lag? Or a an issue?
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2020 C43, 2008 E350
Turbo lag? Or a an issue?
Hello
Been driving my new C43 for about a week now. The first few days the cars responsiveness was amazing. Suddenly today, i noticed from a compelete stop there is a huge delay, and i have to deperess the pedal almost halfway to get this thing moving. Once that initial lag of about 5 seconds is over it seems to kick in? It wasn't like this just days ago. Anyone else experienced this? Just pressing the pedal that far just seems wrong. Also near the bottom of the driver screen there are two guages, 1 says charging and 1 says power. I noticed the power guage is showing empty now and it was showing full bars before. I'll take a look at the manual tonight to see what that is suppose to indicate.
Been driving my new C43 for about a week now. The first few days the cars responsiveness was amazing. Suddenly today, i noticed from a compelete stop there is a huge delay, and i have to deperess the pedal almost halfway to get this thing moving. Once that initial lag of about 5 seconds is over it seems to kick in? It wasn't like this just days ago. Anyone else experienced this? Just pressing the pedal that far just seems wrong. Also near the bottom of the driver screen there are two guages, 1 says charging and 1 says power. I noticed the power guage is showing empty now and it was showing full bars before. I'll take a look at the manual tonight to see what that is suppose to indicate.
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2020 C43, 2008 E350
Noticed it got worse in heat. But in cool weather it seemed to be okay? So odd.
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From: Boston
AMG
Perhaps you should call a service advisor? I know there is no code visible, but if what you're feeling is true, it could be the turbo as it is sensitive to temperature, but could also be normal transmission adjustment.
Out Of Control!!
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From: San Francisco Bay Area
2019 C63CS
Sounds like your car might be in limp mode. One way to tell is if you go the AMG performance screens as mentioned above and then Engine take a look at the scale on the hp graph. If the max hp shown on the graph is less than what it should be, then you are in limp mode. You don't get a CEL or anything if the car is in limp mode, but you'll have to take it to the dealer to diagnose why it went into limp mode, fix the issues and take it out of limp mode. There've been some reports of the electric turbo failing. It's a brand new component and it's used for the first time in the C43. There are also no replacements available at the moment, so if your turbo has failed, then you likely gonna have to wait a while for a replacement part.
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2020 C43, 2008 E350
Out Of Control!!
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From: San Francisco Bay Area
2019 C63CS
So i decided to put the pedal down today to see whats going on. The graph got to 392hp without issue. The responsiveness after rolling is fine. Its just the initial moment you accelerate from stop that is weird. Maybe it's just transmission behavior. Idk. For now it seems the power is sort of there
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2020 C43, 2008 E350
There's still the possibility that the electric turbo isn't working properly. It's supposed to spin up the turbo using the electric motor from a stop until there's enough of an exhaust stream to keep the turbo spooling. This is supposed to virtually eliminate turbo lag. W/o it, the small 4 cyl engine lacks oomph off the line. I haven't driven the C43, but I've driven this engine in the A45S w/o electric turbo and it has turbo lag the size of Texas. Also, in case of the C43 the electric turbo uses the 48V system. If your 48V battery is low then that could be another cause for the turbo not spooling up as it should. The new C63 uses a 400 Volt electric turbo, so it has much more power, but based on folks who have reviewed it there still appears to be quite a bit of lag.
A few times the lag was very bad. Hit the accelerator almost halfway down and nothing then after about 4 seconds boom the car lunged forward and power appeared.
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Thread Starter
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2020 C43, 2008 E350
We've had 2 others post on this sub and other sub with turbo issues but they never followed up. Would be nice to hear what was done in their cases. But they both never posted again
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2020 C43, 2008 E350
Thread Starter
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2020 C43, 2008 E350
Also noticed today when parked idle the engine does a shudder every few seconds only after sitting for a while. sigh idk. Maybe I'm overly alert but the shudder is noticeable by passenger as well. It shudders us at our seats. Man I hope this will all work itself out
Last edited by eatmydust; Jul 23, 2023 at 08:11 PM.
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1986 Light Ivory R107 560SL & 2024 W206 Starling Blue C300 4MATIC AMG-Line, Exclusive Trim
That doesn’t sound normal at all. Something sounds clogged up big time. I’d bring it in.
shudder? the engine should have some decent shake when in sport mode - something you can feel in the cabin and probably one of the reasons why dynamic engine mounts are being offered - but again it should be steady/consistent.
I do think it's lazy off the line - I'm not sure how the electric turbo works but it might not work at all at idle? Not sure - would have to do more research.
I do think it's lazy off the line - I'm not sure how the electric turbo works but it might not work at all at idle? Not sure - would have to do more research.
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2020 C43, 2008 E350
shudder? the engine should have some decent shake when in sport mode - something you can feel in the cabin and probably one of the reasons why dynamic engine mounts are being offered - but again it should be steady/consistent.
I do think it's lazy off the line - I'm not sure how the electric turbo works but it might not work at all at idle? Not sure - would have to do more research.
I do think it's lazy off the line - I'm not sure how the electric turbo works but it might not work at all at idle? Not sure - would have to do more research.
Yeah off the line the turbo lags at first, later kicks in.
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2020 C43, 2008 E350
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From: Boston
AMG
nope not there. the thing about electric turbo it's always there ready as opposed to conventional turbo that needs to wait for fuel to get there. So there should not be any delays.
I wonder if your dealer would let you try another one to compare.
I wonder if your dealer would let you try another one to compare.
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2024 E350
So i decided to put the pedal down today to see whats going on. The graph got to 392hp without issue. The responsiveness after rolling is fine. Its just the initial moment you accelerate from stop that is weird. Maybe it's just transmission behavior. Idk. For now it seems the power is sort of there
Thread Starter
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2020 C43, 2008 E350
