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I have a 15 XC60 T6 and a 2012 S60 T6 and they both will do this from time to time. It is a bitch when it does it but luckily i have only seen it a handful of times. My 2010 XC60 T6 even did it a few times. There must be some speed and throttle position that causes it.

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Same transmission?

My S80 also has the same weird jerky shifts mentioned here and elsewhere. Seems to be the norm so never brought it up with the dealer (CPO car). Makes the transmission seem fragile and the behavior doesn't fit the the luxury car image. Was always hesitant to get a European car because of reliability concerns. How ironic the the Japanese made transmission is my main concern. I'm just slowly getting used to it and living with it.

It's used in so many different cars though that hopefully the weird shifts don't mean future failure.

https://en.wikipedia.org/wiki/AWTF-80_SC

My new (used) 2012 S80 T6 also has this experience. Do they use the same transmission? Also a first-time Volvo owner, and on top of that I haven't driven a traditional automatic in upwards of three years (had a manual and a CVT since that time). It was distressing at first but it seems that this is certainly not odd behavior.
 

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Hi. Thanks, I bought it as a CPO from the dealer so the tranz fluid has been changed. Still seems overly jerky. Warpedcow, can you go into some detail on what you mean that this car will "lock the torque converter very aggressively"?

Thanks again!
David
You don't KNOW the fluid was ever actually changed if it was done before you purchased it. You can get under it and check for signs the bolts involved have been turned. But dealers, even luxury brands, pull all sorts of tricks with CPO standards sometimes.
 

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Unhappy, as a new owner of a used 2013 XC60, to hear this problem is not quite fixable. I can't get over the little jerk as coasting to a stop. I drive in silence a lot and even hear the dash plastic creak as it happens. Now, I simply wait for it to happen and irritate me instead of learning to ignore it.
First world problem.
 

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We have a 2013 XC60 and have experienced the same issues with the shifting, but only when changing from approaching a stop to acceleration, the car clunks into gear. The dealer has updated the software three times and we even insisted that a senior technician from head office come and drive the vehicle. The result was, yes he could detect the clunking, but this is a "trait" of the T6 and Volvo does not have a fix.

When we raised this in an email to the president of Volvo Canada, we were contacted by a customer service manager and were told that there is nothing technically wrong with the vehicle and that our concerns have been sent to Sweden, but as there is no technical fault, it is not a priority so she had no idea whether anything would actually be done about it. Not exactly the kind of response one expects from a luxury auto maker. We did get a letter stating that they would fix the transmission under warranty even after the 4 year warranty period has ended, so I would try to get some kind of guarantee that they will continue to fix the issue at their cost, not yours.

Dear "Chaphall" Please contact us. We just contacted Volvo Canada HQ for the same reason and would like to add the fact that we are not alone. If they have a list of several owners with the issue they may actually do something about it.
 

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Our dealer wiped the learned shifting and it was night and day. They had done an update or two, but it got to the point where I didn't want an update, because it just seemed to get worse or just different.

The thing is, we've owned the car since new, so relearning us doesn't seem to make sense. The car shifts a lot snappier and doesn't do the weird wrong gear dance. It feels like they dumped sport mode into it.
 

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dbphillips: The fluid wears over time, which the gearbox takes into account using a bunch of parameters and stuff. I'm guessing re-doing the adaption sort of gave it a clean slate, letting it re-learn from the fluids' actual state rather than the expected state (which is what I believe is how it'll take wear into account).

Also, driver adaption is different from the shifting adaption. The latter is how the gearbox applies the oil pressure, how it shifts etc. The former is how it adapts to the driver, e.g early upshifts, smooth ones for a comfortable ride, or a bit snappier and later shifts for a bit more performance.
 

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Here is a reply from Volvo Canada Customer Service. The last line is great "functioning as intended by Volvo".

The following is the information that has been provided by our product support division in relation to the XC60 transmission shifting feedback and inquiry you reported.

The 6 speed in the XC60 has been around since 2006, and has demonstrated exceptional reliability. The original software in the transmission was programmed to keep the transmission in gear from coast down to assist with a mild engine brake feature. Once the car reached a speed of approximately 30 km/h, the transmission disengaged and prepared its self for acceleration again. The consequence of this was that in certain light braking application, the action of the transmission was felt as a mild jerk during coast down. This was magnified in cars with worn engine mounts.

To address this, the software was modified in 2012 to hold the gear and shift to 2nd unless the car came to a complete stop. When you accelerate from an “almost” stopped speed, the car starts up in 2nd gear to provide a smoother coast down experience.
Unless of course there is a demand from the driver for more power. If there is a demand for additional power, the shifts to 1st gear, which can be felt as a bump at low speed take-off. This is magnified on inclines as:


The throttle application is greater
Throttle command is temporarily reduced at the throttle plate to facilitate a smooth shift


This feeling is often interpreted as the transmission slipping or engaging poorly, but is instead how the transmission is designed to operate without consequence to long term durability. The ‘slip’ feeling is a combination of throttle reduction and transmission delay to avoid a harsh jolt to the driveline. The failure rate on this series of transmission is extremely low. This can be mitigated with a smooth dip into the throttle during rolling accelerations which don't make the car think that sudden power is required.

Software is available to return to the original design, but there are trade-offs there too. Polestar software does not change the transmission shift logic. The software in the 3.2 is different to match the different power and torque curves in the 3.2 vs the T6. This gear hold logic is undesirable in the 3,2, as the engine needs to rev up to make power, vs. a T6 which can have power at low rpm’s due to electronic turbo boost control. Different drivelines cannot really be compared.

This is not of course to ignore that transmission fluid on all cars degrade over time losing its properties and hard shifting is often the first consequence. Fluid colour/ inspection should also be inspected to determine if transmission performance can be improved.

I hope this has provided more insight on the transmission shifting properties of the XC60 and that it is consistent with your observations. If you have any further questions regarding this, please contact Ivan at Newmarket Volvo as this is the extent of the technical information that can be provided through Customer Relations. Our retailers are the point of contact for inquiries of this nature as they have factory trained technicians as well as direct access to Volvo Technical Support.

That being said, please be assured that we have documented your feedback on this topic and we would ask that in the event that further transmission concerns occur, please notify Newmarket Volvo and we will review the case for assistance, but at this time it has been determined that the transmission in your 2011 XC60 is functioning as intended by Volvo.
 

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Here is a reply from Volvo Canada Customer Service. The last line is great "functioning as intended by Volvo".

The following is the information that has been provided by our product support division in relation to the XC60 transmission shifting feedback and inquiry you reported.

The 6 speed in the XC60 has been around since 2006, and has demonstrated exceptional reliability. The original software in the transmission was programmed to keep the transmission in gear from coast down to assist with a mild engine brake feature. Once the car reached a speed of approximately 30 km/h, the transmission disengaged and prepared its self for acceleration again. The consequence of this was that in certain light braking application, the action of the transmission was felt as a mild jerk during coast down. This was magnified in cars with worn engine mounts.

To address this, the software was modified in 2012 to hold the gear and shift to 2nd unless the car came to a complete stop. When you accelerate from an “almost” stopped speed, the car starts up in 2nd gear to provide a smoother coast down experience.
Unless of course there is a demand from the driver for more power. If there is a demand for additional power, the shifts to 1st gear, which can be felt as a bump at low speed take-off. This is magnified on inclines as:


The throttle application is greater
Throttle command is temporarily reduced at the throttle plate to facilitate a smooth shift


This feeling is often interpreted as the transmission slipping or engaging poorly, but is instead how the transmission is designed to operate without consequence to long term durability. The ‘slip’ feeling is a combination of throttle reduction and transmission delay to avoid a harsh jolt to the driveline. The failure rate on this series of transmission is extremely low. This can be mitigated with a smooth dip into the throttle during rolling accelerations which don't make the car think that sudden power is required.

Software is available to return to the original design, but there are trade-offs there too. Polestar software does not change the transmission shift logic. The software in the 3.2 is different to match the different power and torque curves in the 3.2 vs the T6. This gear hold logic is undesirable in the 3,2, as the engine needs to rev up to make power, vs. a T6 which can have power at low rpm’s due to electronic turbo boost control. Different drivelines cannot really be compared.

This is not of course to ignore that transmission fluid on all cars degrade over time losing its properties and hard shifting is often the first consequence. Fluid colour/ inspection should also be inspected to determine if transmission performance can be improved.

I hope this has provided more insight on the transmission shifting properties of the XC60 and that it is consistent with your observations. If you have any further questions regarding this, please contact Ivan at Newmarket Volvo as this is the extent of the technical information that can be provided through Customer Relations. Our retailers are the point of contact for inquiries of this nature as they have factory trained technicians as well as direct access to Volvo Technical Support.

That being said, please be assured that we have documented your feedback on this topic and we would ask that in the event that further transmission concerns occur, please notify Newmarket Volvo and we will review the case for assistance, but at this time it has been determined that the transmission in your 2011 XC60 is functioning as intended by Volvo.
What does the phrase "software is available to return to the original design." Does that mena we have the option to revert to the old software with the downshift on slowdown? I would take that in a heartbeat over what we have now!
 

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What does the phrase "software is available to return to the original design." Does that mena we have the option to revert to the old software with the downshift on slowdown? I would take that in a heartbeat over what we have now!
Yes, I believe they'll do it.

Rough 2-1 Downshift TJ31210- 2016-03-11

I haven't yet asked my dealer to perform this TJ, but I intend to do so during my next service.
 

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I have a 2013 XC60 T6 as well and have experienced the same issue. At first I changed the software to correct the harsh shifting which was changed to the latest updated software. Once changed I was getting the same harsh 2 to 1 downshift at a rolling coast and take off. The only fix was to have the original software loaded back into the car.
 

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Thanks, that tsb was issued 2 weeks after our warranty expired. I wonder if I can get a little goodwill on it.
 

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Tj31210

Here's is the TJ:


Technical Journal 31210


CSC Customer Symptom Codes
Code Description
ND Automatic transmission/Shifts rough or jerky/When downshifting

Operation Number
VST Operation Number Description

43713-2 Automatic gearbox test drive/adaptation

DTC Diagnostic Trouble Codes

Text
DESCRIPTION:

Note!
If using a printed copy of this Technical Journal, first check for the latest online version.
This Software (SW) only applies to vehicles in the list above and with Transmission Control Module
(TCM) hardware part number (HWPN) 31312609.

If the vehicle has TCM HWPN 30751946 or 31342781, then the TCM would have to be replaced with
HWPN 31312609 in order to accept the SW.

The downshift threshold for 2-1 gearshift has been set to 1 MPH compared to 4 MPH in the previous
version. This change was implemented as part of several shift performance upgrades to solve rough
shifts during the 5-4 downshift, N-D garage shift and Neutral Control.

Since the speed threshold was lowered in the latest software version, customers may experience a
different behaviour when coming to a rolling stop, but never coming to a complete stop, followed by a
quick acceleration.

SERVICE:
If customer complains about a rough 2-1 downshift during a rolling stop, even though customer has
latest TCM software, please download TCM software according to SP numbers below.
Be aware that downloading this software will remove ALL fixes related to C1 issues, like rough 5-4
downshifts, N-D garage shift and Neutral Control.
SP 31456524 should be used for vehicle type
134
155
156
SP 31456542 should be used for vehicle type
124
136
 

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Hard downshift 4 to 3 - hopefully resolved

My new 2016 XC60 went thru a similar issue with hard downshifting between 4 to 3. Brought it into the dealer who worked on it for about 10 days. The diagnosed problem was a faulty valve body. Took a lot of research to find out what that was and its interrelationship to the transmission. By the way, the 2016 XC60 has switched to an eight speed automatic with sport. I believe it is an AISIN product, but have yet to find the exact match (might be AWF8F35 or 45). Back to the hard downshift...After replacing the valve body, the car runs smoother than silk. The dealer said it was still in "adapt" mode, but research indicates otherwise. This is my 5th Volvo (1990-740; 1991-760T; 2000-S80T; and 2001 S80 2.9), and certainly the most serious problem encountered. The shifting is much smoother and I have even noticed an increase in gas mileage after receiving the TCM update and new valve body. I'll post more when I can get to the paperwork.
 

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Here's is the TJ:


Technical Journal 31210


CSC Customer Symptom Codes
Code Description
ND Automatic transmission/Shifts rough or jerky/When downshifting

Operation Number
VST Operation Number Description

43713-2 Automatic gearbox test drive/adaptation

DTC Diagnostic Trouble Codes

Text
DESCRIPTION:

Note!
If using a printed copy of this Technical Journal, first check for the latest online version.
This Software (SW) only applies to vehicles in the list above and with Transmission Control Module
(TCM) hardware part number (HWPN) 31312609.

If the vehicle has TCM HWPN 30751946 or 31342781, then the TCM would have to be replaced with
HWPN 31312609 in order to accept the SW.

The downshift threshold for 2-1 gearshift has been set to 1 MPH compared to 4 MPH in the previous
version. This change was implemented as part of several shift performance upgrades to solve rough
shifts during the 5-4 downshift, N-D garage shift and Neutral Control.

Since the speed threshold was lowered in the latest software version, customers may experience a
different behaviour when coming to a rolling stop, but never coming to a complete stop, followed by a
quick acceleration.

SERVICE:
If customer complains about a rough 2-1 downshift during a rolling stop, even though customer has
latest TCM software, please download TCM software according to SP numbers below.
Be aware that downloading this software will remove ALL fixes related to C1 issues, like rough 5-4
downshifts, N-D garage shift and Neutral Control.
SP 31456524 should be used for vehicle type
134
155
156
SP 31456542 should be used for vehicle type
124
136
Just a quick update. We just had this TJ applied to my wife's 2012 XC60 T6 RD yesterday. While I only drove it to dinner and back this evening (less than 10 miles round trip), my early assessment is that it seems to have resolved the problem introduced by Volvo with their previous software flash. I probably need to drive it a bit more, but so far so good. That previous flash was crap which is why Volvo even offered this "reversion". Oh, and we were out of warranty and given my history of transmission complaints on this EXACT issue, they comped me (note: I did ask them to have VCNA cover it).
 

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I had this update applied to my vehicle as well about 6 weeks ago. Creeping along in low speed traffic is now just as smooth as it used to be prior to that unwanted "update." My service advisor did not charge me for the reflash which was nice (although I thought software updates were now supposed to be free??). The service advisor did caution me that any new updates would overwrite this flash so I think I may just make it a habit of reminding my dealer not to update my vehicle's software when it goes in for service.

I'm happy Volvo made this old software available. Thanks for listening, Volvo.
 

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Sorry about bumping an old thread but I have a 2013 XC60 T6 with 62K miles and it just started having the exact same issue described in this thread. I did take it to the dealer and after the mechanic drove it he said the trans needs to be replaced. He did not do any diagnostics or anything like that. He just said that it is down shifting hard which is a sign of an internal issue with the trans. If it was happening at different speeds then I might agree with him but it only happens when coasting or braking at low speed which seems to be the issue other posters in this thread experienced. I saw this thread after I left the dealership so I will have to make another appointment. I have a couple of questions. Will having the original software applied cause it have other issues? How do I know which vehicle type I have (as listed in the TSB):

SP 31456524 should be used for vehicle type
134
155
156
SP 31456542 should be used for vehicle type
124
136
 

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This software seems to reverse other attempted fixes that Volvo made along the way, but frankly it seems to be the best of the bunch. The 6 speed in these cars is never going to be awesome I'm afraid. It looks like it covers almost all of them from 2011-2015
 

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Will having the original software applied cause it have other issues?
Here's a data point for you:
Before my XC60 got the unwanted software with the stupid 2-1 downshift, I never noticed any drivability issues with the transmission. With the the stupid software, only the 2-1 stuck out to me as being AWFUL. Now that I'm back to the pre-stupid software with the smooth 2-1 downshift, everything performs as I expect. I have no other issues with my vehicle.
 
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