What drive mode are you using?

 

I am usually in individual mode, with the powertrain setting in comfort mode.

I had felt that the 1-2 shift when cold was pretty rough. I find polestar feels more like a luxury upgrade than a sport upgrade. Shifts are smoother, much less dead time waiting for a downshift coming out of corners. There are whole threads on the subject and everyone gives it a thumbs up but wishes it came from the factory setup like the polestar tune.

Now that you mention it, it is mainly the 1-2 shift and usually at slower speeds/partial throttle. I don't really notice it at WOT.

 

I had felt that the 1-2 shift when cold was pretty rough. I find polestar feels more like a luxury upgrade than a sport upgrade. Shifts are smoother, much less dead time waiting for a downshift coming out of corners. There are whole threads on the subject and everyone gives it a thumbs up but wishes it came from the factory setup like the polestar tune.

 

What transmission is used in the XC90?

The XC90 uses an Aisin 8-speed transverse automatic transmission. Details here: http://forums.swedespeed.com/showthread.php?225481-8-Speed-AT-by-Aisin-AW

 

I have Polestar from day 1, so I can't compare, but compared to my previous SUV with 5-gear aut.transmission, I find my XC90 to be "jerky" with 1 and 2 gear as well. Driving in Comfort mode 99%. I feel it mainly when I don't press the pedal very strong. In a more dynamic situation, the reaction is smooth.

 

When I'm parking in my garage at creeping speed 90% of the time the 2nd to 1st gear shift is jerky. At first I though it was the Auto Stop-Start shutting the engine down and back up. The other 10% I figured I'm going just a bit faster so it doesn't need to down-shift to 1st before I stop.

There is a TJ about 4-5 gear changes being jerky due to some of our transmissions are out of spec. Reprograms the transmission to compensate. I wonder if it would smooth out 1 and 2 gear too?

 

When I'm parking in my garage at creeping speed 90% of the time the 2nd to 1st gear shift is jerky. At first I though it was the Auto Stop-Start shutting the engine down and back up. The other 10% I figured I'm going just a bit faster so it doesn't need to down-shift to 1st before I stop.

There is a TJ about 4-5 gear changes being jerky due to some of our transmissions are out of spec. Reprograms the transmission to compensate. I wonder if it would smooth out 1 and 2 gear too?

Or perhaps there's some other issue that needs a similar software patch to the transmission system. There's another thread about unexpected response from the transmission when passing up hill. Could be there are some bugs they need to work out using real world data. I'd have it looked into if for no other reason then to get it logged and increase the likelihood of Volvo taking action in the future to correct it.

 

Same issue. Got a 2017 loaner yesterday. Transmission is smooth as can be. Have dealer doing a test drive w me. I want mine to feel the same way. Same engine. No reason it shouldn't.


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Here is the TJ I was talking about. Not sure if it can help my 2-1 shift issue. I wonder if they incorporate it in the latest Total Upgrade. If so, it didn't help me.

Technical Journal

TITLE: Rough shifts, 5-4, Neutral Control, N-D TF80SC/SD

REF NO: TJ 29078.14.0

ISSUING DEPARTMENT: Technical Service

CAR MARKET:United States and Canada
PARTNER: 3 US 7510 Volvo Car USA
ISSUE DATE: 2017-02-06
STATUS DATE: 2017-02-13
FUNC GROUP: 4370
FUNC DESC:Automatic, transmission (hydromechanical

DTC Diagnostic Trouble Codes
Control Module TCM
Code Fault P089500
Type Intermittent

TCM=Transmission Control Module
SW=Software
VIDA= Vehicle Information and Diagnostic Aftersales

*NOTE! THIS DOCUMENT SUPERSEDES THE PREVIOUS TECHNICAL JOURNAL 26840
DATED 19-Aug-2014. PLEASE UPDATE YOUR FILES.
*TJ29078 replaces closed TJ 26840
*TJ updated to include labor op in VST format

DESCRIPTION:
Due to internal tolerance deviation in automatic gearbox (TF80SC/SD), the customer may experience
rough shift from 5:th to 4:th gear, or/and shift shock after standing still at brake release, or/and harsh
engagement N-D shift.
DTC TCM-P089500 might not be stored even with above stated symptoms.

PRODUCT MODIFICATION:
A modified TCM software with better adaptation functionality for internal tolerance deviation in
automatic gearbox.
Adaptation temperatures areas is 1=40-65, 2=66-73, 3=74-81, 4=82-89 5=90-110.
With this SW the adaptation is active from 40°C, for N-D, 5-4 coast down and Neutral control.

MATERIAL RETURN:
Material for analysis can be requested in Vehicle Report.

VEHICLE REPORT:
Follow the guideline found in TIE under Instructions - Manuals, chapter 3.5.3.
Yes, please submit a Vehicle Report if the service solution described in this TJ has no effect.
Use concern area "Vehicle Report" and sub concern area "Support Needed", use function group 4370.

In report please include detailed customer complaint as well as driving condition when it happens.
Which gear, throttle, gearbox oil temperature, driving pattern just before the issue occurred, etc.
Perform a readout with VIDA (if possible, just after issue occurrence) to automatically record adaptation
parameters for further troubleshooting purposes. And add VIDA logs in to VR.

SERVICE:
In case of customer complaints matching above symptoms, update to the latest TCM SW from VIDA.

After TCM S/W update, an adaptation process should be performed.
Use VIDA TCM advanced menu to activate the "adaptation mode" (this will allow you to see which
gear you are in and also when gearbox has been adjusted).

Adaptation has to be performed in specific temperature areas reached by following a specific

HEAT-UP PROCEDURE:
To avoid internal damage to the transmission, it is NOT allowed to heat up gearbox by using brake
and acceleration pedal in D.
To heat up the transmission, start in manual mode with third gear and accelerate with high
acceleration pedal.
Do this until you reach few degrees below target temperature area. Stand still in D mode and wait for
temp to increase to the lower limit of the target temperature area.
Note: For most efficiency for all new functions it is important to reach temp above 85° C.
HEAT-UP transmission until 72°C (refer to above procedure)

STEP 1 - Temperature area 3 (74-81°C):
1. With brake active, put shifter in Neutral, wait 5-10 seconds
2. Move shifter to Drive, brake still active, wait 45-60 seconds
3. Release brake, do not push accelerator pedal
4. Brake the car to complete stop, wait 10 seconds with brake still active
5. Repeat step 1-4 one more time

HEAT-UP transmission until 80°C (refer to above procedure)

STEP 2 - Temperature area 4 (82-90°C):
1. With brake active, put shifter in Neutral, wait 5-10 seconds.
2. Move shifter to Drive, brake still active, wait 45-60 seconds.
3. Release brake, do not push accelerator pedal.
4. Brake the car to complete stop, wait 10 seconds with brake still active.
5. Repeat step 1-4 at least 10 times.
6. If possible, make a test drive to verify the general shift quality, especially for 5-4 coast down shifts.

Note: Inform to the customer when the car is returned, that some hard shifts might occur sporadically
in specific conditions (even several weeks after dealer adaptation - depending on customer driving
pattern). The adaptation will continue to improve the shift quality.
Note: If the adaptation is done in other temperature areas than in above procedure, the shift quality for
N-D, 5-4 coast down and Neutral Control may be more improved.

 

Software update resolved issue.


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