Transmission Update.....So So
05-13-2017, 02:11 PM
#26
Senior Member
Guys. I finally can 100% duplicate this jerky issue. It always happens at gear 1. To make the jerking occur, first switch to sport+ mode. From a full stop, apply the gas paddle. Before tranny auto-shift to gear 2, completely release gas and reengage gas immediately. Then your car would start jerking so hard at gear 1. I am not sure if its normal or not. If you have other sporty car. Please help to do the same on it and see if the jerking occurs.
My 991 Porsche 520 HP Turbo in Sport + never did this..... My new 991.2 580 HP Turbo S in Sport + (Now at 615HP with 100 cell cat sport exhaust) and it does not do it either.
Come on MB..... FIX this thing!
Last edited by 1Gunner; 05-14-2017 at 08:42 AM.
05-13-2017, 04:06 PM
#27
Member
Thread Starter
I'd have to be in your car with you to see what you mean. If you're in first gear, and completely take your foot off the throttle, and then hit the throttle, it's going to jerk of course considering this car has 384 lb-ft of torque.
But I'm guessing you mean something else when you say it's jerking? Have you ever driven a manual before? If so, does it feel similar to when you go too slow for a particular gear (lugging the engine) and the car starts to shudder (shake) before stalling?
But I'm guessing you mean something else when you say it's jerking? Have you ever driven a manual before? If so, does it feel similar to when you go too slow for a particular gear (lugging the engine) and the car starts to shudder (shake) before stalling?
That's what I was thinking. That much power taking the foot off and applying the gas will cause a lot of decel and acceleration surges.
My issue is unrelated as occasionally my Sport+ mode doesn't shift all the way down to 1st when coming to a complete stop.
07-17-2017, 01:26 PM
#28
Super Member
What is the consensus on the transmission software upgrades? good thing, bad thing? I've gotten pretty used to the way my 16 C450 drives and shifts, but going to have a service done this week and wonder if I should mention to have any transmission update done?
