Acceleration surge while braking
Thread Starter
Senior Member
Joined: Dec 2012
Posts: 251
Likes: 20
GL550
Acceleration surge while braking
I could use a little help here. My wife complained that on rare occasions, her 2010 GL550 will sometimes "surge"/accelerate slightly while braking. It only does it at very low speeds (like coming up to a stop sign, etc.) and does not overwhelm the brakes, but it's still make her feel a little uneasy.
I was driving it yesterday and for the first time noticed it myself. Just once over the course of an hour or so drive. I was slowing for a red light and was probably going less than 10mph. A quick little blip of the tach and she stated, "there it is, did you feel that?"
Any ideas? Otherwise the vehicle functions perfectly.
I was driving it yesterday and for the first time noticed it myself. Just once over the course of an hour or so drive. I was slowing for a red light and was probably going less than 10mph. A quick little blip of the tach and she stated, "there it is, did you feel that?"
Any ideas? Otherwise the vehicle functions perfectly.
Junior Member
Joined: Feb 2006
Posts: 44
Likes: 0
From: Kansas
2004 E500, 2010 R350, 2000 Audi S4, 1994 Miata
I test drove an 11 GL550 today and it had the exact same issue. At very low speeds in forward or reverse it would surge. Also it seemed to have a slightly uneven idle. It almost feels like a torque converter slipping. Needless to say I think I'll pass on this one.
