2018 E63s Bucking when cold
Thread Starter
Newbie
Joined: Nov 2011
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From: Ogden Dunes, Michigan City, IN
AMG E63s, Porsche 993 TT
2018 E63s Bucking when cold
Hi Folks,
I'm relatively new here, and really enjoying my 2018 AMG E63s, (bought CPO w/17K miles.) I "came over" from BMW M550xi. This beast has way more power! I'm experiencing fairly severe "Bucking" on starting out when she's been sitting for 8 hours or so at the office. This is lesser in Comfort, but fairly severe in Sport or Sport plus. Also, I have a grinding noise when backing out while turning. Is that normal with this car's differential and MC trans? I have owned a Ferrari 430 with DCT, so I'm familiar with the fact that MC is not going to be as smooth as a TC Trans. But, this is severe enough to be embarrassing when others are in the car. It does smooth out when warmed up, but, still does it slightly.
Thanks for any advice.
Tom D.
I'm relatively new here, and really enjoying my 2018 AMG E63s, (bought CPO w/17K miles.) I "came over" from BMW M550xi. This beast has way more power! I'm experiencing fairly severe "Bucking" on starting out when she's been sitting for 8 hours or so at the office. This is lesser in Comfort, but fairly severe in Sport or Sport plus. Also, I have a grinding noise when backing out while turning. Is that normal with this car's differential and MC trans? I have owned a Ferrari 430 with DCT, so I'm familiar with the fact that MC is not going to be as smooth as a TC Trans. But, this is severe enough to be embarrassing when others are in the car. It does smooth out when warmed up, but, still does it slightly.
Thanks for any advice.
Tom D.
Out Of Control!!
Joined: Jun 2004
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2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
The bucking could be characteristic of the mct but you may need to have a coupe things checked
- mct adaptations
- they can adapt it for cold and warm starts
- problems with intake manifold
i always start out in S mode even when cold and baby the throttle for the first 1/2 mile and then no bucking
the grinding sounds odd and shouldn't be doing that the way you describe when backing out
- mct adaptations
- they can adapt it for cold and warm starts
- problems with intake manifold
i always start out in S mode even when cold and baby the throttle for the first 1/2 mile and then no bucking
the grinding sounds odd and shouldn't be doing that the way you describe when backing out
Newbie
Joined: Apr 2018
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2018 AMG E63 S 4Matic+
My car "bucks" as well, but only in sport+ and race. It feels like it just wants to GO. When I switch it back to comfort, it sorts itself out. No idea why, but it's manageable for me. I guess that's just what comes with 627lb ft off torque in sport mode in lower gears. Lol
As for the grinding noise, my last car had that problem and the had to swap out the rear differential. It fixed it right away. You might want to bring it to the dealership.
As for the grinding noise, my last car had that problem and the had to swap out the rear differential. It fixed it right away. You might want to bring it to the dealership.
MBWorld Fanatic!
Joined: May 2017
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From: Southern California
2018 E63S AMG
I typically wait till the temp display has gone from blue to white before switching to Sport+ (never uses Sport). When I have gone straight to Sport+ when cold, I have noticed that the throttle response is somewhat twitchy.
Mainly the reason for starting out in Comfort till the temp is up is just to help remind myself not to punch it on the cold motor and drivetrain.
Mainly the reason for starting out in Comfort till the temp is up is just to help remind myself not to punch it on the cold motor and drivetrain.
Thread Starter
Newbie
Joined: Nov 2011
Posts: 9
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From: Ogden Dunes, Michigan City, IN
AMG E63s, Porsche 993 TT
Thanks for the advices!
Thanks all for the advice, everyone!
I never punch it until the "blue goes away" but, I thought after sitting only 6 to 8 hours, she's still have enough residual heat in the block. Not the same as the 12 cylinder MTU diesels in the boat I guess. I didn't mention I do have a EC tune, but, this issue started long before the tune. I was hoping the driveability improvement would help the issue. Comfort mode it is, until the blue disappears.
On the diff, I think I'd better take her in to be looked at. The grinding sounds/feels godawful, and sometimes it's on leaving the driveway in forward, now, too. It feels like like the clutch pack is binding.
Tom D.
I never punch it until the "blue goes away" but, I thought after sitting only 6 to 8 hours, she's still have enough residual heat in the block. Not the same as the 12 cylinder MTU diesels in the boat I guess. I didn't mention I do have a EC tune, but, this issue started long before the tune. I was hoping the driveability improvement would help the issue. Comfort mode it is, until the blue disappears.
On the diff, I think I'd better take her in to be looked at. The grinding sounds/feels godawful, and sometimes it's on leaving the driveway in forward, now, too. It feels like like the clutch pack is binding.
Tom D.
