Rough down shift
RL Community Team
Rennlist Member
Rennlist Member
Joined: Jan 2013
Posts: 9,382
Likes: 2,912
From: The Woodlands, TX.
A loaner 2020 Cayenne brought me here... I have my Taycan 4S in for an update and the dealer gave me what they had available.
I've been driving this around for about a day and noticed weird behaviour causing very jerky (abrupt) acceleration and braking with this car.
As many have described, this "lurching" occurs during braking and happens right around when the vehicle in about to come to a complete stop. It feels like the car lunges forward and an adjustment in brake force is suddenly needed. I believe it is related to Auto S/S because it's disappears when I've manually turned it off or driving in Sport Mode which disables AS/S. Seeing as this is the latest M/Y, the problem still exists sadly.
The other issue I find is when the car is in a Auto Stop mode, that accelerating is also abrupt causing a sudden push forward which isn't smooth at all.
Is this common with Cayennes only or has anyone heard this is just an issue with Porsche's Auto S/S technology that is experienced in all their automatic cars?
I've been driving this around for about a day and noticed weird behaviour causing very jerky (abrupt) acceleration and braking with this car.
As many have described, this "lurching" occurs during braking and happens right around when the vehicle in about to come to a complete stop. It feels like the car lunges forward and an adjustment in brake force is suddenly needed. I believe it is related to Auto S/S because it's disappears when I've manually turned it off or driving in Sport Mode which disables AS/S. Seeing as this is the latest M/Y, the problem still exists sadly.
The other issue I find is when the car is in a Auto Stop mode, that accelerating is also abrupt causing a sudden push forward which isn't smooth at all.
Is this common with Cayennes only or has anyone heard this is just an issue with Porsche's Auto S/S technology that is experienced in all their automatic cars?
RL Community Team
Rennlist Member
Rennlist Member
Joined: Jan 2013
Posts: 9,382
Likes: 2,912
From: The Woodlands, TX.
Again, many of us that suffered from that problem since 2019 and for 20,000 miles, had the lurching issue fixed.
Contact Porsche of Houston North, I know they fixed mine. Maybe, they can talk to your dealer about how they fixed it.
I learned by experience that dealers don't post certain fixes on their receipts that may not require new parts.
Contact Porsche of Houston North, I know they fixed mine. Maybe, they can talk to your dealer about how they fixed it.
I learned by experience that dealers don't post certain fixes on their receipts that may not require new parts.
3rd Gear
Joined: May 2021
Posts: 3
Likes: 0
From: Vancouver, BC
So I'm still driving this loaner (a week now)... and noticed it's not just correlated to the Auto S/S. The lurching happens in normal and sport mode and it's def the transmission - It's the equivalent to pushing the clutch in while braking, engine-braking is taken away - but the feeling is very sudden. I also notice this now in slow acceleration, but in reverse - a lag in power and then a jolt to accelerate.
Ok, other complaint is suspension - This is a base Cayenne so spring suspension (not air) and this thing handles like a boat at slow speeds, rocks side to side. It does reasonably well in corners but around the city, it's not a very well composed car. I was thinking about replacing my wife's X5 with the Cayenne but I'm shocked how bad the ride is... too bad.
Ok, other complaint is suspension - This is a base Cayenne so spring suspension (not air) and this thing handles like a boat at slow speeds, rocks side to side. It does reasonably well in corners but around the city, it's not a very well composed car. I was thinking about replacing my wife's X5 with the Cayenne but I'm shocked how bad the ride is... too bad.
Racer
Joined: Oct 2015
Posts: 391
Likes: 28
So I'm still driving this loaner (a week now)... and noticed it's not just correlated to the Auto S/S. The lurching happens in normal and sport mode and it's def the transmission - It's the equivalent to pushing the clutch in while braking, engine-braking is taken away - but the feeling is very sudden. I also notice this now in slow acceleration, but in reverse - a lag in power and then a jolt to accelerate.
Ok, other complaint is suspension - This is a base Cayenne so spring suspension (not air) and this thing handles like a boat at slow speeds, rocks side to side. It does reasonably well in corners but around the city, it's not a very well composed car. I was thinking about replacing my wife's X5 with the Cayenne but I'm shocked how bad the ride is... too bad.
Ok, other complaint is suspension - This is a base Cayenne so spring suspension (not air) and this thing handles like a boat at slow speeds, rocks side to side. It does reasonably well in corners but around the city, it's not a very well composed car. I was thinking about replacing my wife's X5 with the Cayenne but I'm shocked how bad the ride is... too bad.
First, there's the lurching and extremely rough downshifts, particularly from 4-3 and 3-2. This causes an uncomfortable ride for driver and passengers, where you're feeling the car lurching a bit (unlike a normal car, which slows down smoothly and in a much more linear/predictable fashion, if you will).
Second, there's definitely an issue with a harsh Start/Stop initiation. I often felt the car shut off the engine while I was still rolling to a stop and traveling 3-4mph. At first, I thought it was a neat idea, but then immediately hated it as it further adds to the lurching/unease of stopping the car. I've never experienced this in another car; all other Start/Stop features in other vehicles tend to wait at least until you're fully stopped, and then proceed to cut the engine.
Anyway, I'll probably end my rant here as I'm not a Cayenne owner. But, these issues absolutely, 100% discouraged me from buying a Cayenne that I was considering as a daily.
Cmon, Porsche!
Pro
Joined: May 2019
Posts: 506
Likes: 264
From: St. Paul, MN
I don't believe this is "model wide". I have a '20 E Hybrid that has zero lurging/lurching issues. AS/S is not on the vehicle as it switches to the electric motor at stops. So if you want a Cayenne, and want to avoid this, go test drive either of the E Hybrid models. I also don't have the brake noises other threads have complained about.
Advanced
Joined: Sep 2021
Posts: 99
Likes: 41
any updates on this?
i took my car in for this same exact problem. they identified the problem (meaning they were able to replicate it) and did a transmission software reset.
obviously, that did not work. as soon as i drove it out of service, issue was still there. i drove back immediately and service guy told me it takes 100 miles for the car to “learn how you drive and adapt”. well it’s been a month and still the same issue.
im so disappointed and frustrated.
2019 base cayenne.
i took my car in for this same exact problem. they identified the problem (meaning they were able to replicate it) and did a transmission software reset.
obviously, that did not work. as soon as i drove it out of service, issue was still there. i drove back immediately and service guy told me it takes 100 miles for the car to “learn how you drive and adapt”. well it’s been a month and still the same issue.
im so disappointed and frustrated.
2019 base cayenne.
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Racer
Joined: Jul 2016
Posts: 409
Likes: 98
From: Florida
any updates on this?
i took my car in for this same exact problem. they identified the problem (meaning they were able to replicate it) and did a transmission software reset.
obviously, that did not work. as soon as i drove it out of service, issue was still there. i drove back immediately and service guy told me it takes 100 miles for the car to “learn how you drive and adapt”. well it’s been a month and still the same issue.
im so disappointed and frustrated.
2019 base cayenne.
i took my car in for this same exact problem. they identified the problem (meaning they were able to replicate it) and did a transmission software reset.
obviously, that did not work. as soon as i drove it out of service, issue was still there. i drove back immediately and service guy told me it takes 100 miles for the car to “learn how you drive and adapt”. well it’s been a month and still the same issue.
im so disappointed and frustrated.
2019 base cayenne.
Advanced
Joined: Sep 2021
Posts: 99
Likes: 41
oh and if anyone is interested, this is what they did to “remedy” the problem:
”Road tested. Verified 3-2 downshift surge. No codes stored. Reset transmission adaptions. Road tested.”
Advanced
Joined: Dec 2018
Posts: 69
Likes: 17
In my opinion, there is no fix for the horrible behavior of this transmission. My brother flew up from Florida for a visit and took a day trip with his son, probably put 100-125 miles on my 19 Cayenne base. When he returned he asked me what was up with the downshifts that caused his head to dive forward every time he slowed to a light or stop sign. His daily drive is a Lexus RX350 (probably a 15-16) which has a smooth as butter tranny, I know this because I've driven his a couple of times. When I drive my wife's 911 with the PDK, I feel like I'm in a luxury car compared to mine, hell - even the seat is more comfortable in hers than the rock provided in the Cayenne...I'll never buy another.
Racer
Joined: Jul 2016
Posts: 409
Likes: 98
From: Florida
In my opinion, there is no fix for the horrible behavior of this transmission. My brother flew up from Florida for a visit and took a day trip with his son, probably put 100-125 miles on my 19 Cayenne base. When he returned he asked me what was up with the downshifts that caused his head to dive forward every time he slowed to a light or stop sign. His daily drive is a Lexus RX350 (probably a 15-16) which has a smooth as butter tranny, I know this because I've driven his a couple of times. When I drive my wife's 911 with the PDK, I feel like I'm in a luxury car compared to mine, hell - even the seat is more comfortable in hers than the rock provided in the Cayenne...I'll never buy another.
Advanced
Joined: Sep 2021
Posts: 99
Likes: 41
In my opinion, there is no fix for the horrible behavior of this transmission. My brother flew up from Florida for a visit and took a day trip with his son, probably put 100-125 miles on my 19 Cayenne base. When he returned he asked me what was up with the downshifts that caused his head to dive forward every time he slowed to a light or stop sign. His daily drive is a Lexus RX350 (probably a 15-16) which has a smooth as butter tranny, I know this because I've driven his a couple of times. When I drive my wife's 911 with the PDK, I feel like I'm in a luxury car compared to mine, hell - even the seat is more comfortable in hers than the rock provided in the Cayenne...I'll never buy another.
Racer
Joined: Jul 2016
Posts: 409
Likes: 98
From: Florida
Good question. It is inexcusable.
Drifting
Joined: Jul 2007
Posts: 3,487
Likes: 1,230
From: Canada
For those wondering if this problem is model wide, my GTS with 5,000 kms (3,000 miles) has not exhibited any lurching on downshift in any of the modes. Having followed this thread for sometime before buying, I test drove my GTS for an hour prior to signing. That issue aside, I do have some groaning brake noise from time to time but usually in the morning or right after washing the car. Some quick stops from a higher speed seems to send that noise on its way.