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Jerks when braking

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Old Aug 16, 2010 | 12:43 PM
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seth2def
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2007 C230 Sport
Jerks when braking
Was driving home yesterday, when the car suddenly 'jerked' when I was braking. It continued to do this everytime I braked and the car was around 20mph. It'll jerk once per each time I slow down. Checked the brake fluid, brake pads (still with OEM pads/rotors). No CEL. Still happens with ESP off or on. Also happens even if I downshift the car to stop. Any ideas?
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Old Aug 16, 2010 | 12:52 PM
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Whats mileage? Tranny fluid perhaps.
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Old Aug 16, 2010 | 01:01 PM
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Originally Posted by OneOfaKindTrini
Whats mileage? Tranny fluid perhaps.
44K miles. Tranny fluid......where do you check/replace it from? Or is that something that requires the dealership?
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Old Aug 16, 2010 | 01:03 PM
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Originally Posted by seth2def
Was driving home yesterday, when the car suddenly 'jerked' when I was braking. It continued to do this everytime I braked and the car was around 20mph. It'll jerk once per each time I slow down. Checked the brake fluid, brake pads (still with OEM pads/rotors). No CEL. Still happens with ESP off or on. Also happens even if I downshift the car to stop. Any ideas?
What do you mean by "jerks"? Do you feel it in the steering wheel like the car wants to go to one side?
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Old Aug 16, 2010 | 01:08 PM
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It feels like someone tapped on the brake really hard....kinda like 'brake checking someone!' Then after that split second, it rides normally until I try to slow down at the next traffic light. But it's weird because it only happens when decelerating and at ~20mph. Steering wheel is fine....no pulling. No noises. Started suddenly happening. yesterday.
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Old Aug 16, 2010 | 01:12 PM
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I believe it is the trannsmission making multiple downshifts when coming to a stop, I had this problem, but when I did the 40k mile service this problem went away.
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Old Aug 16, 2010 | 01:46 PM
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yea mine did that too and i changed the tranny fluid and its fine now.
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Old Aug 16, 2010 | 02:51 PM
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haven't had tranny fluid changed yet, so it's worth a try. thanks for the advice
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Old Aug 16, 2010 | 03:47 PM
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Originally Posted by seth2def
haven't had tranny fluid changed yet, so it's worth a try. thanks for the advice

If you are mechanically inclined I'd reccomend doing it yourself or be prepared from a big bill from a MB Dealer.
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