Rough down shift
Thread Starter
Intermediate
Joined: Dec 2018
Posts: 34
Likes: 1
Rough down shift
Hey guys,
I took delivery of the 2019 cayenne S in july(was released earlier in my country) and ive been noticing that the down gear shifts in any mode is very harsh, sometimes shift feels like its pushing the car forward which makes me almost not applying enough break to stop.
Anyone faced this in theirs? Im Guessing since the gear is new to porsche they will release an software update correcting the timing . I just wanted to ask to see if its not only me
I took delivery of the 2019 cayenne S in july(was released earlier in my country) and ive been noticing that the down gear shifts in any mode is very harsh, sometimes shift feels like its pushing the car forward which makes me almost not applying enough break to stop.
Anyone faced this in theirs? Im Guessing since the gear is new to porsche they will release an software update correcting the timing . I just wanted to ask to see if its not only me
Rennlist Member
Joined: Jan 2017
Posts: 70
Likes: 28
From: Boulder, Colorado
We won the use of a 2019 base Cayenne over Thanksgiving weekend from our dealer. (we have a turbo on order). I definitely noticed what you are talking about. At first I thought it was the brakes (base brakes), but then I figured out, it was caused by the tranny downshifting. Just before stopping, as it would drop down into a lower gear, it felt like the car would get pushed forward. You had to brake harder to compensate for it, which made for a very jerky stop. I hope they have fix for it and Porsche doesn't consider it normal.
Burning Brakes
Joined: Jun 2017
Posts: 1,024
Likes: 131
From: NY -> MA
We won the use of a 2019 base Cayenne over Thanksgiving weekend from our dealer. (we have a turbo on order). I definitely noticed what you are talking about. At first I thought it was the brakes (base brakes), but then I figured out, it was caused by the tranny downshifting. Just before stopping, as it would drop down into a lower gear, it felt like the car would get pushed forward. You had to brake harder to compensate for it, which made for a very jerky stop. I hope they have fix for it and Porsche doesn't consider it normal.
Mostly OT, but my Volvo V90 CC with the Polestar tune does this same thing in Dynamic mode. Makes it unusable in some conditions. Unfortunately, Volvo hasn't shown any particular responsiveness about fixing it via a software patch. Hopefully Porsche will do otherwise...
Thread Starter
Intermediate
Joined: Dec 2018
Posts: 34
Likes: 1
Im glad im not the only one who noticed it,
I owned a 2016 lx570( worst car I owned) and they had just switched to the ZF 8 speed( same as the 2019 cayenne) same issue was there and a year later software upgrade solved it, it was done in 30 mins by the local dealer service
I owned a 2016 lx570( worst car I owned) and they had just switched to the ZF 8 speed( same as the 2019 cayenne) same issue was there and a year later software upgrade solved it, it was done in 30 mins by the local dealer service
Rennlist Member
Joined: Jan 2013
Posts: 4,537
Likes: 1,526
My 911 Turbo S and 911 GT3 both do it as well. Particularly on Turbo S - it jumps forward on downshift. Maybe it's by design to feel more sporty? It does not bother me in either car, but my wife sometimes gets scared because she apparently thinks I'm an idiot who can just decide to launch the car into cross-traffic for no reason.
Advanced
Joined: Dec 2018
Posts: 69
Likes: 17
I have a 2019 base model and have the same symptoms. If there's a passenger with me, you see their head push forward when decelerating and causes your brake pressure to become uneven. Was not expecting this, hope they fix it with an update.
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Track Day
Joined: Oct 2018
Posts: 15
Likes: 0
I am having the same issue, but my brakes are also squeaking at low speeds and when I release the brakes, I have 600 miles on my cayenne and I thought the brakes may need to be broken in. I have the standard brake package. Has anybody else had this issue?
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Burning Brakes
Joined: Apr 2018
Posts: 1,189
Likes: 383
From: Midlothian, TX
The gist is that fixed-caliper brakes with multiple pistons are great at stopping and fade resistance relative to single-piston sliding calipers. But their design introduces variables that can increase brake squeal.
Every vehicle I’ve owned with fixed-caliper brakes made noise. Depending on conditions (temperature, humidity, pad life, pedal pressure, cycle of the moon, you name it) they were slightly to moderately noisy on occasion.
This is not to say you shouldn’t have your dealer take a look if you’re concerned. But if Porsche was forced to release a YouTube video on this subject to help get ahead of the issue, the sounds you’re hearing may be normal. Or, ahem, “normal” in that they won’t do much about it.
We spec’d PCCB on our Turbo. I have already told my wife to expect a racket. She said she’ll be proud and point to the yellow calipers, saying, “Yep. My speed brakes ARE noisy! How many pistons you got, dude?”
Track Day
Joined: Feb 2018
Posts: 17
Likes: 0
Rough Down Shift
I have a new Base Model with all the options and am having both issues. I understand the brake video but cannot imagine that Porsche could not do as good a job on that issue as BMW's base braking system. Coming from 3 X5s that were smoother shifting, better braking and no noise. Hoping the downshift issue gets fixed soon. Also same jolt in reverse that I am experiencing and not sure if others are having. Have about 750 miles so will try and get it to the shop sometime soon.
Thread Starter
Intermediate
Joined: Dec 2018
Posts: 34
Likes: 1
I have a new Base Model with all the options and am having both issues. I understand the brake video but cannot imagine that Porsche could not do as good a job on that issue as BMW's base braking system. Coming from 3 X5s that were smoother shifting, better braking and no noise. Hoping the downshift issue gets fixed soon. Also same jolt in reverse that I am experiencing and not sure if others are having. Have about 750 miles so will try and get it to the shop sometime soon.
I am giving porsche the benifit of the doubt as its their first time using this transmission and will hopefully update it soon
Track Day
Joined: Oct 2018
Posts: 15
Likes: 0
I talked the service manager and he told me the brakes needed to be broken in and to drive the car very hard and brake hard. It appears to have helped and minimize the noise. I had my brakes checked by the dealer and They did not find any issues. Seems like a design flaw to me.
Burning Brakes
Joined: Oct 2011
Posts: 767
Likes: 56
From: MA
I hadn't noticed this issue, so today I paid very close attention to both the braking and the transmission downshifting while coming to a stop. I am now almost certain that is neither the brakes nor the downshifting. The "issue" is actually caused by the release of the engine braking. As the vehicle is slowed while approaching a stop sign, while you press the brake pedal, the engine stays engaged via the transmission to assist in slowing the vehicle. At some point before coming to a stop, the transmission releases the engine and goes into coasting mode. It was subtle but I definitely felt it and I automatically pressed the brake a little more to maintain a smooth stop. I recall reading that Porsche "improved" this coasting feature in the new Cayenne to increase gas mileage. Perhaps the slightly unsmooth braking is a side effect. Not a big deal for me.
Burning Brakes
Joined: Dec 2018
Posts: 1,043
Likes: 357
We won the use of a 2019 base Cayenne over Thanksgiving weekend from our dealer. (we have a turbo on order). I definitely noticed what you are talking about. At first I thought it was the brakes (base brakes), but then I figured out, it was caused by the tranny downshifting. Just before stopping, as it would drop down into a lower gear, it felt like the car would get pushed forward. You had to brake harder to compensate for it, which made for a very jerky stop. I hope they have fix for it and Porsche doesn't consider it normal.
Hey guys,
I took delivery of the 2019 cayenne S in july (was released earlier in my country) and ive been noticing that the down gear shifts in any mode is very harsh, sometimes shift feels like its pushing the car forward which makes me almost not applying enough break to stop.
Anyone faced this in theirs? I'm Guessing since the gear is new to porsche they will release an software update correcting the timing . I just wanted to ask to see if its not only me
I took delivery of the 2019 cayenne S in july (was released earlier in my country) and ive been noticing that the down gear shifts in any mode is very harsh, sometimes shift feels like its pushing the car forward which makes me almost not applying enough break to stop.
Anyone faced this in theirs? I'm Guessing since the gear is new to porsche they will release an software update correcting the timing . I just wanted to ask to see if its not only me