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Down shift after braking

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Old Jul 7, 2014 | 01:27 PM
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Uncfan1976's Avatar
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C300 Sport 4matic
Down shift after braking

Hey everyone,

Hoping someone might be able to help with my 2008 c300 sport 4matic. As of late when ever I am approaching a stop light or sign and begin to brake, come to a stop I feel this slight jerk forward. It's almost like it is shifting into low gear or something. It is happening pretty consistently and I actually have now prepared the way I am driving to lessen the feel. I don't hear any noise just that forward motion..

Any ideas? Thanks in advance!
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Old Jul 7, 2014 | 01:47 PM
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Sounds like normal behavior for the 7G unfortunately. The ones I've driven do this.

It would be lessened if you drove in "C" mode, but that may not be worth the compromise.
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Old Jul 7, 2014 | 06:08 PM
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2016 GLE450 AMG Coupe
Originally Posted by Uncfan1976
Hey everyone,

Hoping someone might be able to help with my 2008 c300 sport 4matic. As of late when ever I am approaching a stop light or sign and begin to brake, come to a stop I feel this slight jerk forward. It's almost like it is shifting into low gear or something. It is happening pretty consistently and I actually have now prepared the way I am driving to lessen the feel. I don't hear any noise just that forward motion..

Any ideas? Thanks in advance!
Are you using the tiptronic when this happens? I've noticed that my car does this as well when railing through the gears manually. When I'm in "normal" mode though it drives like normal, and doesn't experience the engine break while shifting down.

Than again, mine is a Luxury model so it defaults to the "C" mode upon start. It could be something to do with your "S" mode since yours is a sport model. I do know in "C" mode the car will start from 2nd gear unless the accelerator passes a certain point. This could be why "C" doesn't exhibit the same symptoms you describe.

Last edited by Skyline45; Jul 7, 2014 at 06:31 PM.
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Old Jul 7, 2014 | 07:59 PM
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'13 GLK350 4matic,'10 C207,'15 GLA250,'07 Honda Odyssey, '18 GLE 43, '24 EQS 580
I initially have a jerking downshift while using S mode as well just like yours and after driving for weeks on S modes it is not there anymore. I think the transmission adjust/learns and it is just stretching it's legs after being driven on C or E mode.

Good thing 08 and 09 years keeps the S mode even after turning off the ignition switch. I don't have to push it whenever I turn on the car.

If you are using the tiptronic and lets say you are on the 3rd or 4th gear and stopped without manually gearing down properly it will jerk to 1st gear when the car reach a specific speed. So be sure to downshift properly like a manual car when reducing speed.

Last edited by shotgun_banjo; Jul 7, 2014 at 08:01 PM.
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Old Jul 7, 2014 | 08:27 PM
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Last edited by Skyline45; Jul 7, 2014 at 08:30 PM.
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Old Jul 7, 2014 | 10:29 PM
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C300 Sport 4matic
Thanks for the replies. I keep it in "s" mode most of the time. I noticed it started happening shortly after my service a. It's annoying.. It feels sort of like a bowling ball is rolling from the back of the trunk to front of trunk..
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