Jerky 1-2, 2-3 shifts CD 2015
06-19-2018, 09:24 AM
#1
Instructor
Thread Starter
Jerky 1-2, 2-3 shifts CD 2015
Hi guys.
I just recently piked up a post-fix 2015 CD with 16K miles for 47K (MSRP 77K). After driving it for awhile I noted quite jerky shifting pattern under moderate or fast acceleration between 1-2 and 2-3 gears. The rest of gears shift flawlessly. It doesn't matter if the car is cold or fully warmed up. I scheduled an appointment with a Porsche dealer, but before you I go there I wanted to check with you if that's an unusual behavior. We also have 2015 X5 35D with ZF transmission and it shift flawlessly under any circumstances. I expected the same for CD and wasn't even thinking something can be wrong on a 16K mile car.
I just recently piked up a post-fix 2015 CD with 16K miles for 47K (MSRP 77K). After driving it for awhile I noted quite jerky shifting pattern under moderate or fast acceleration between 1-2 and 2-3 gears. The rest of gears shift flawlessly. It doesn't matter if the car is cold or fully warmed up. I scheduled an appointment with a Porsche dealer, but before you I go there I wanted to check with you if that's an unusual behavior. We also have 2015 X5 35D with ZF transmission and it shift flawlessly under any circumstances. I expected the same for CD and wasn't even thinking something can be wrong on a 16K mile car.
06-19-2018, 08:15 PM
#2
Banned
Join Date: Mar 2011
Location: Spring Lake, NJ, US of A
Posts: 10,085
Received 1,160 Likes
on
767 Posts
Assuming it's under warranty (and CPO for a long time) - let the dealer sort it out. While there have been no confirmed transfer case failures on the diesel (or hybrid) Cayennes - yours could be a first. And yes - it's unusual behavior.. (I had an oil burner loaner for a month or so - and the transmission shifted smoothly..)
06-19-2018, 10:13 PM
#4
i also just got a post fix 15 CD. It has some odd shift hesitation then jerk forward as well. I’ve read it has a lot to do with the fix. And the new engine and transmission siftware update but it’s back at the dealer now. I’m also having bad steering wheel vibration when idle in gear like at a stop sign. . Do you have any wheel vibration at idle?
06-19-2018, 11:56 PM
#6
Trending Topics
06-20-2018, 07:02 AM
#8
Racer
Assuming it's under warranty (and CPO for a long time) - let the dealer sort it out. While there have been no confirmed transfer case failures on the diesel (or hybrid) Cayennes - yours could be a first. And yes - it's unusual behavior.. (I had an oil burner loaner for a month or so - and the transmission shifted smoothly..)
https://rennlist.com/forums/cayenne-...l#post15039192
https://www.6speedonline.com/forums/...ml#post4709163
06-20-2018, 07:32 AM
#9
Assuming it's under warranty (and CPO for a long time) - let the dealer sort it out. While there have been no confirmed transfer case failures on the diesel (or hybrid) Cayennes - yours could be a first. And yes - it's unusual behavior.. (I had an oil burner loaner for a month or so - and the transmission shifted smoothly..)
06-20-2018, 02:03 PM
#11
Racer
06-20-2018, 02:06 PM
#12
I can agree with that, but I believe there are less diesels out there and not every owner is on the forum to add their experience. My jerking was slight and not consistent. I didn't even think about when I went in for service. The dealership test drove it and asked about it. From looking at my service invoice I don't see any indication of a vent upgrade added to my TC as others have said.
06-25-2018, 02:08 PM
#14
Instructor
Thread Starter
So, here's a continuation of the story. I took it to the dealer, they acknowledged the problem, re-flashed Tiptronic control unit and reset the adaptation values. I picked up the car and immediately noticed that the problem wasn't solved. Took it back to the dealer. They say the transmission need to relearn. We agreed I would drive it for several days and then contact them if the car keeps doing it. I drove it already for about 20 miles and I can tell it's still the same behavior.
06-26-2018, 03:36 PM
#15
Burning Brakes
