Mine just feels like it has a tight diff or different turning arcs for the front wheels when using a lot of lock - particularly when going right out of a junction first thing in the morning. The front tyres seem to skip or hop to get back in sync with each other. Do they all do this? It can make for jerky and mechanically unsympathetic quick exits from junctions. Cheers
Does your front end hop and skip on tight turns?
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DieselE
61 - 80 of 106 Posts
Yep. Mine too. 22 GTS. They checked it out and said it was a "normal operating characteristic" per bulletin.
Nothing normal about a loud thunk while making a turn. I'm sure at this point they know what it is and are doing the math on the potential recall/repair cost. Something tells me they're just gonna sweep this one under the rug.
Nothing normal about a loud thunk while making a turn. I'm sure at this point they know what it is and are doing the math on the potential recall/repair cost. Something tells me they're just gonna sweep this one under the rug.
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Is this not explained by one of the numerous discussions of the Ackerman Angle, as noted in the post above provided by @grim?
There were a few threads on the topic a few years ago…
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My guess is that the issue is much more common with wide tires. Hypothetically, imagine a three foot wide tire making a very tight ten foot circumference turn. The circumferences of the turning circles at the inner edge of the tire and the outer edge of the tire will be different. The path of inner edge of the tire around the turning circle will be shorter and the path of the outer edge will be longer. One side of the tire will need to be pushed forward to keep up or the other dragged backward. How weight is distributed over the width of the tire or the angle of tilt likely will affect what happens. As the radius of the turn increases the difference becomes insignificant.
The differences in turning radius from one side of a vehicle to the other is why locked up 4 x 4 should not be used on dry pavement. AWD is used on dry pavement to allow the wheels to turn at different speeds when turning.
I have only noticed an issue like this on MY22 GTS while full lock turning but usually on very hot black top or brand new hot black top. I don’t believe it is an issue.
It's the transfer box.
Technical Background
ONLY recommended for diagnostic purposes, fixing the degree of locking to a constant between the front and rear drive shafts from the transfer box serves to eliminate the concern. Disconnecting the electrical plug on the transfer box serves to fix or lock the torque ratio (diagnostic purposes ONLY).
Technical Background
ONLY recommended for diagnostic purposes, fixing the degree of locking to a constant between the front and rear drive shafts from the transfer box serves to eliminate the concern. Disconnecting the electrical plug on the transfer box serves to fix or lock the torque ratio (diagnostic purposes ONLY).
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105 Posts
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172 Posts
Mine does this occasionally and I am a former mechanic and now an engineer, but take that with a grain of salt. I believe it is simply the tire to rim interface that, during tight turns, is causing the tire to flex a bit and "pop" horizontal to the rim, but not breaking the bead.
Think of taking a corner extremely fast where the tire actually breaks it's bead to the rim. Now, imaging this happening slow in a tight turn, but because it is slow, the tire flexes and pops but does not break the bead. It's a hypothesis. There does not seem to be any mechanical noises produced so I am really not concerned.
Think of taking a corner extremely fast where the tire actually breaks it's bead to the rim. Now, imaging this happening slow in a tight turn, but because it is slow, the tire flexes and pops but does not break the bead. It's a hypothesis. There does not seem to be any mechanical noises produced so I am really not concerned.
I have a 2022 Macan S (sub 2k miles) that is my wife's daily driver and on multiple occasions she has experienced an abrupt shake/jolt from the car when navigating a multi-level parking garage at her office.
When operating at a normal and appropriate parking lot speed and rounding the corners at the end of each level she applies some brake and a sharp turn resulting in a sudden "jolt". She describes the "jolt" as if the wheels lock up for a split second and then release.
She has noted that if the brake is not applied during said turn the car will not present the "jolt". This same experience has been noted in other parking lots, but most noticeable at work as it's a routine scenario.
My initial thought is this has something to do with the AWD system, but I have nothing to confirm this being the issue
Prior to this vehicle she drove an Audi S4 in AWD and that vehicle never exhibited the same "jolt" operating in the exact same manor in the exact same parking garage.
Anybody experience this scenario or know what could be causing it?
When operating at a normal and appropriate parking lot speed and rounding the corners at the end of each level she applies some brake and a sharp turn resulting in a sudden "jolt". She describes the "jolt" as if the wheels lock up for a split second and then release.
She has noted that if the brake is not applied during said turn the car will not present the "jolt". This same experience has been noted in other parking lots, but most noticeable at work as it's a routine scenario.
My initial thought is this has something to do with the AWD system, but I have nothing to confirm this being the issue
Prior to this vehicle she drove an Audi S4 in AWD and that vehicle never exhibited the same "jolt" operating in the exact same manor in the exact same parking garage.
Anybody experience this scenario or know what could be causing it?
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10 Posts
Do you have PTV+?
I’ve been noticing something similar with my recently delivered S (with PTV+), where really low speed sharp cornering it feels like the differential is completely locking up, which gives the feeling it a jamming wheel. I haven’t narrowed it down yet exactly when though, but low speed turns in the road are not problem, just really slow speed and sharp corners so far… may also be the fact the tires are quite wide on the back too.
I’ve been noticing something similar with my recently delivered S (with PTV+), where really low speed sharp cornering it feels like the differential is completely locking up, which gives the feeling it a jamming wheel. I haven’t narrowed it down yet exactly when though, but low speed turns in the road are not problem, just really slow speed and sharp corners so far… may also be the fact the tires are quite wide on the back too.
I have experienced the same thing several times on my 2022 S with approx 3000 miles now but the first time it happened the car had few hundred miles.
I’ve noticed the same behavior when driving along a line of parking spots, then slowing down to almost crawl and making a sharp turn while applying brakes in order to park either front in or back in. The jolt is felt while applying brakes at a very low speed and sharp turn not necessarily on full lock but close to it.
To me it felt like something either in the transmission or the transfer case rather than brakes.
So my wife took the Macan S to the local dealer we purchased it from this afternoon and inquired with one of the service advisors who knew right away what she was referring to when she began to explain the issue. In fact, he said he has personally experienced the "jolt" on multiple occasions while driving the Macan's they provide as loaner cars during service. He went on to say he thought it might have something to do with the transmission downshifting at that moment in time causing the "jolt" or sudden braking phenomenon. Appears this is not an isolated issue and as the service representative went on to say Porsche has yet to acknowledge any problem.
I will say the Porsche transmission is set up to maintain high RPMs when possible. I tend to drive in a fashion to allow the car to slow on it's own vs. applying brake when possible and I would say there is a significant amount of engine braking done by the Macan. It's somewhat reminiscent of the Tremec dual clutch transmission I've experienced when driving the new Shelby GT500 that attempts to emulate a manual transmission as it moves down the gears correlative of speed.
I will say the Porsche transmission is set up to maintain high RPMs when possible. I tend to drive in a fashion to allow the car to slow on it's own vs. applying brake when possible and I would say there is a significant amount of engine braking done by the Macan. It's somewhat reminiscent of the Tremec dual clutch transmission I've experienced when driving the new Shelby GT500 that attempts to emulate a manual transmission as it moves down the gears correlative of speed.
Typically, when coming to a full stop the shift to 1st gear from 2nd is imperceptible… it feels to me steering angle input has to have something to do with this behaviour. And it definitely doesn’t feel smooth so I’m concerned about transmission (if in fact it turns out to be a transmission downshifting).
I am going to visit my dealer soon and will ask about that for sure.
I just traded my 2022 GTS with 3,900 miles in because of this issue. It started the second day I had the car and had a new transfer case installed at 2,500 miles that did not fix the problem. It always happened with slow full turns and on occasion I would get double or triple jolts.
This was my 3rd Macan and the other two never did it. My new car is a 2023 Macan S—only 300 miles on it but no problems so far. I personally think it’s a transmission issue since the new transfer case did nothing. Just my $.02.
This was my 3rd Macan and the other two never did it. My new car is a 2023 Macan S—only 300 miles on it but no problems so far. I personally think it’s a transmission issue since the new transfer case did nothing. Just my $.02.
i hope you didnt take a big depreciation hit on it because of a defect that porsche has acknowledged. I don't know why they can't just fix things like this proactively instead of waiting for the class action lawsuit.
I got lucky being able to get this S that was close enough to my GTS and the hit wasn’t terrible —I was never going to be happy with that car and I’m sure I would have spent months convincing them to do something . They had already ordered a second transfer case and I’m 99% sure it would not have fixed it.
I just got this from my friend who has been helping me research this problem. This explains it completely and there is obviously a problem that Porsche knows about...
https://static.nhtsa.gov/odi/tsbs/2022/MC-10217269-0001.pdf
Advanced Technical Information
Bulletin #: 2222 3 Part ID: 3965
95B.III – 2022 Macan Transfer Boxes Shudder/Jerk at Slower Speeds Vehicles Affected
Models
Macan
Revision History
Revision
0
Model Year
2022
Release Date
July 29, 2022
Model Type
VIN Range
Vehicle-Specific Equipment
95B n/a
Original document
All
Changes
Condition
Customer uses adjectives like shuddering, jerking, jolting, lurching, lunging or similar to describe the behavior of the vehicle’s drivetrain at lower speeds. Particularly, this occurs while driving in 2nd or 1st gear in the transmission’s automatic mode with some slight brake application in combination with a greater steering angle input (at or close to ‘full-lock’), travelling at around 10 mph, e.g. while negotiating a parking space or lot. The condition happens in reverse too, and can be disconcerting. There are no fault occurrences associated with the behavior described herein.
Technical Background
ONLY recommended for diagnostic purposes, fixing the degree of locking to a constant between the front and rear drive shafts from the transfer box serves to eliminate the concern. Disconnecting the electrical plug on the transfer box serves to fix or lock the torque ratio (diagnostic purposes ONLY).
Service Information
Please determine if the customer’s complaint is consistent with the description provided in the ‘Condition’ section above, by first operating the vehicle under the described parameters (preferably with the customer). If this issue is consistent, please operate the vehicle under the same parameters with a fixed or constant torque lock in the transfer box, which is possible by disconnecting the electrical plug to the transfer box.
1. If the behavior identified occurs under the parameters described in the ‘Condition’ section above, and improves with unplugging the transfer box, then please DO NOT perform any repairs. This behavior is currently a normal operating characteristic of the drivetrain and is under investigation.
AfterSales
July 29, 2022 Page 1 of 2
Advanced Technical Information
Bulletin #: 2222 3 Part ID: 3965
2. If the customer’s complaint is either not consistent with the condition outlined in this bulletin and/or does not cease when disconnecting the transfer box’s electrical plug, then please continue to diagnose and resolve the complaint.
Warranty
As always, please document the repair completely in PCSS.
For this repair, please code the “cause” as follows: Cause location: 3965 Transfer box Cause symptom: 1126 Jerky gear change
Use the following troubleshooting labor operation
03350050
03350053
51921900
39650199
Search Items
Fault memory read-out
Creation of the VAL
Cover front remove and reinstall Unplug transfer box and test-drive
Transfer box, Macan, shuddering, jerking, jolting, lurching, lunging, transmission
https://static.nhtsa.gov/odi/tsbs/2022/MC-10217269-0001.pdf
Advanced Technical Information
Bulletin #: 2222 3 Part ID: 3965
95B.III – 2022 Macan Transfer Boxes Shudder/Jerk at Slower Speeds Vehicles Affected
Models
Macan
Revision History
Revision
0
Model Year
2022
Release Date
July 29, 2022
Model Type
VIN Range
Vehicle-Specific Equipment
95B n/a
Original document
All
Changes
Condition
Customer uses adjectives like shuddering, jerking, jolting, lurching, lunging or similar to describe the behavior of the vehicle’s drivetrain at lower speeds. Particularly, this occurs while driving in 2nd or 1st gear in the transmission’s automatic mode with some slight brake application in combination with a greater steering angle input (at or close to ‘full-lock’), travelling at around 10 mph, e.g. while negotiating a parking space or lot. The condition happens in reverse too, and can be disconcerting. There are no fault occurrences associated with the behavior described herein.
Technical Background
ONLY recommended for diagnostic purposes, fixing the degree of locking to a constant between the front and rear drive shafts from the transfer box serves to eliminate the concern. Disconnecting the electrical plug on the transfer box serves to fix or lock the torque ratio (diagnostic purposes ONLY).
Service Information
Please determine if the customer’s complaint is consistent with the description provided in the ‘Condition’ section above, by first operating the vehicle under the described parameters (preferably with the customer). If this issue is consistent, please operate the vehicle under the same parameters with a fixed or constant torque lock in the transfer box, which is possible by disconnecting the electrical plug to the transfer box.
1. If the behavior identified occurs under the parameters described in the ‘Condition’ section above, and improves with unplugging the transfer box, then please DO NOT perform any repairs. This behavior is currently a normal operating characteristic of the drivetrain and is under investigation.
AfterSales
July 29, 2022 Page 1 of 2
Advanced Technical Information
Bulletin #: 2222 3 Part ID: 3965
2. If the customer’s complaint is either not consistent with the condition outlined in this bulletin and/or does not cease when disconnecting the transfer box’s electrical plug, then please continue to diagnose and resolve the complaint.
Warranty
As always, please document the repair completely in PCSS.
For this repair, please code the “cause” as follows: Cause location: 3965 Transfer box Cause symptom: 1126 Jerky gear change
Use the following troubleshooting labor operation
03350050
03350053
51921900
39650199
Search Items
Fault memory read-out
Creation of the VAL
Cover front remove and reinstall Unplug transfer box and test-drive
Transfer box, Macan, shuddering, jerking, jolting, lurching, lunging, transmission
61 - 80 of 106 Posts
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