C63, C43 AMG (W206) 2023 -

My burbles randomly stopped coming out one day even in sport+

Old May 10, 2025 | 07:08 AM
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My burbles randomly stopped coming out one day even in sport+

I own a 2023 w206 c43 and throughout 2 years of ownership it has always burbled in sport plus especially whenever i downshift and feather to 5700 rpm. The pops would be super loud at 5700 but now my car randomly stopped popping completely even when i rev it up to 5700. Does anyone have any idea as to why this would happen? I have already tried multiple gas stations and even changed the oil but the car still does not burble.
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Old May 10, 2025 | 09:19 AM
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Originally Posted by dbw
I own a 2023 w206 c43 and throughout 2 years of ownership it has always burbled in sport plus especially whenever i downshift and feather to 5700 rpm. The pops would be super loud at 5700 but now my car randomly stopped popping completely even when i rev it up to 5700. Does anyone have any idea as to why this would happen? I have already tried multiple gas stations and even changed the oil but the car still does not burble.
Usually soft limp mode causes this.
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Old May 10, 2025 | 09:20 AM
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If no CEL I wonder if it could still be an oxygen sensor, have your service advisor scan the vehicle remotely for codes: https://developer.mercedes-benz.com/...nostic_support
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Old May 10, 2025 | 09:21 AM
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Originally Posted by W205C43PFL
Usually soft limp mode causes this.
Soft limp mode doesn't throw a CEL.
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Old May 10, 2025 | 09:25 AM
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I am not sure if this car is compatible with the scanner but worth trying if you can't take vehicle in yet and service advisor isn't willing to help you remotely diagnose the vehicle: https://mbworld.org/forums/c450-c43-...ml#post8562347
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Old May 10, 2025 | 10:00 AM
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Originally Posted by W205C43PFL
Usually soft limp mode causes this.
Is there anyway to take my car out of soft limp mode without having to take it to the dealership as I am returning it in 1 month and I just wanna have my burbles for the last bit of ownership.
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Old May 10, 2025 | 10:56 AM
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Originally Posted by dbw
Is there anyway to take my car out of soft limp mode without having to take it to the dealership as I am returning it in 1 month and I just wanna have my burbles for the last bit of ownership.
Yes to erase codes with a capable scanner. Need to at least know what caused it though otherwise it will put itself back in soft limp mode again.
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Old May 10, 2025 | 10:58 AM
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Originally Posted by W205C43PFL
Yes to erase codes with a capable scanner. Need to at least know what caused it though otherwise it will put itself back in soft limp mode again.
Are there any scanners you recommend that arent too expensive and are compatible with my generation?
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Old May 10, 2025 | 10:59 AM
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Originally Posted by W205C43PFL
Yes to erase codes with a capable scanner. Need to at least know what caused it though otherwise it will put itself back in soft limp mode again.
I get multiple rear axle malfunctions pretty frequently along with the occasional battery issue that makes it so my car wont even turn on. It just goes into position one and shoots a bunch of lights.
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Old May 10, 2025 | 11:15 AM
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Originally Posted by dbw
I get multiple rear axle malfunctions pretty frequently along with the occasional battery issue that makes it so my car wont even turn on. It just goes into position one and shoots a bunch of lights.
I expect loww voltage codes, that explains why the car is in soft limp mode. Need to drive the vehicle for 60 minutes without stopping or put it on a trickle charger to charge it. No point clearing codes when they will just come back without fixing the issue. This is like a band aid solution except with leaks.

Last edited by W205C43PFL; May 10, 2025 at 11:16 AM.
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Old May 10, 2025 | 11:17 AM
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Originally Posted by W205C43PFL
I expect loww voltage codes, that explains why the car is in soft limp mode. Need to drive the vehicle for 60 minutes without stopping or put it on a trickle charger to charge it. No point clearing codes when they will just come back without fixing the issue. This is like a band aid solution except will leaks.
I have driven it for more than 1 hour on multiple occasions recently so I dont think its the battery being an issue because I havent had that issue for around a month now. Yeah but if i clear the codes will I be able to have my burbles back as im returning the car in a month and I dont wanna send it in and lose time with the car.
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Old May 10, 2025 | 11:21 AM
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Originally Posted by dbw
I have driven it for more than 1 hour on multiple occasions recently so I dont think its the battery being an issue because I havent had that issue for around a month now. Yeah but if i clear the codes will I be able to have my burbles back as im returning the car in a month and I dont wanna send it in and lose time with the car.

In that case try clearing it and fingers crossed it doesn't come back, do let me know what codes they are though.
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Old May 10, 2025 | 11:23 AM
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Originally Posted by W205C43PFL
In that case try clearing it and fingers crossed it doesn't come back, do let me know what codes they are though.
Are there any scanners you recommend I buy that are not too expensive to check as I don’t know anything about the scanner market.
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Old May 10, 2025 | 11:29 AM
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Originally Posted by dbw
Are there any scanners you recommend I buy that are not too expensive to check as I don’t know anything about the scanner market.
https://mbworld.org/forums/e-class-w...onal-more.html
Remember to update the software of the scanner when you get it though.
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Old May 10, 2025 | 01:52 PM
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Originally Posted by W205C43PFL
https://mbworld.org/forums/e-class-w...onal-more.html
Remember to update the software of the scanner when you get it though.
I just had one of my friends from a dealership scam and clear it for me and turns out you were right it was the battery so I took it on a long drive and now the burbles are back and better than ever.
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Old May 10, 2025 | 02:02 PM
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Originally Posted by dbw
I just had one of my friends from a dealership scam and clear it for me and turns out you were right it was the battery so I took it on a long drive and now the burbles are back and better than ever.
Enjoy it : ) what are you planning to replace it with? Also, what code was stored?
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Old May 10, 2025 | 02:05 PM
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Originally Posted by W205C43PFL
Enjoy it : ) what are you planning to replace it with? Also, what code was stored?
Thanks man and I’m looking at getting a either a m850i or a m4/m3. Also there were over 15 codes but all basically linked up to the battery.
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Old May 10, 2025 | 02:12 PM
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Originally Posted by dbw
Thanks man and I’m looking at getting a either a m850i or a m4/m3. Also there were over 15 codes but all basically linked up to the battery.
I ses yup these sensitive electronics throw lots of voltage related codes when the battery doesn't give it enough juice. Oh what made you want to ditch MB but good choice, the 850i is a great vehicle! Our forum's admin has one I think his name was speedlimit.
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Old May 10, 2025 | 02:14 PM
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https://mbworld.org/forums/members/1...peedlimit.html
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Old May 10, 2025 | 02:14 PM
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Originally Posted by W205C43PFL
I ses yup these sensitive electronics throw lots of voltage related codes when the battery doesn't give it enough juice. Oh what made you want to ditch MB but good choice, the 850i is a great vehicle! Our forum's admin has one I think his name was speedlimit.
I just wanna try something new as I have driven a m5 and m4 csl and thought they were both pretty neat. So im looking at getting into a bmw instead of keeping a benz but maybe later on I might get a s65.
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Old May 10, 2025 | 02:15 PM
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Originally Posted by dbw
I just wanna try something new as I have driven a m5 and m4 csl and thought they were both pretty neat. So im looking at getting into a bmw instead of keeping a benz but maybe later on I might get a s65.
Haha yes life is too short, all great choices wish you many happy miles
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Old May 10, 2025 | 02:16 PM
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Originally Posted by W205C43PFL
Haha yes life is too short, all great choices wish you many happy miles
Thanks man you as well
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Old May 10, 2025 | 02:17 PM
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Originally Posted by dbw
Thanks man you as well

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