I was driving yesterday in dynamic mode. I accelerated while making a turn, and the car failed to upshift. Instead, it stayed in gear and revved really high. I thought that I may have accidentally put it into manual shift mode, but I checked, and this was not the case. I let the RPMs settle down, and tried again, but it did the same thing. Fortunately, there wasn't any traffic around, so I pulled over and brought the car to a stop. I put it in park and then back into drive again, and then it was fine. Thank god this didn't happen to my wife. She would have really freaked out. Has anyone else experienced something like this?
First significant mechanical glitch. Car fails to shift gears when accelerating ...
gweempose
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Has anyone at Volvo reached out to you?
No. I mentioned it to my dealer the last time I had the car in, but they were unable to come up with any explanation as to why it happened. I suppose it's possible that I had accidentally put the car into manual shifting mode, but I don't think that was the case.
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I can confirm that on my T8 that's what I've ended up doing ... by pulling back one more time when the display shows B ... the 1 (for first gear) shows up on the left of the letters. Its actually easy to do - and if you're not really paying attention to the display - you may not realise that you're in manual shift mode (or stuck in first gear). I wish the one had more serif look to it - that may help distinguish what is going on.
Of course - this only happens when the fossil fuel engine is on - in hybrid mode (which most of the time that's what I seem to get from a start) the electric rear wheels are used to start ...
Of course - this only happens when the fossil fuel engine is on - in hybrid mode (which most of the time that's what I seem to get from a start) the electric rear wheels are used to start ...
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A bit more info on this issue - specific to the T8:
Indeed the manual shows that when you pull back on the crystal shift lever after you reach B if you pull again you get into gear mode. If you do this from a standstill - you'll be in first gear (and it will hold it).
The manual goes on to note that if you want to shift manually at that point - you need to have the steering wheel with paddles (AFAIK only available on the R-design and never for wood steering wheel equipped cars). I'm not sure I like this user interface; can't immediately think of a scenario where I would want or use it - and seems too easy to accidentally invoke it.
Pushing forward on the shifter (in the T8) will get it out of the stuck gear mode.
Also found a note that the car should protect itself by changing gear based on RPM's - though it is not clear that this will happen if you over rev the car in first gear (causing it to go to second). Probably not a good thing to red line a car in first gear shortly after starting it anyway ...
Indeed the manual shows that when you pull back on the crystal shift lever after you reach B if you pull again you get into gear mode. If you do this from a standstill - you'll be in first gear (and it will hold it).
The manual goes on to note that if you want to shift manually at that point - you need to have the steering wheel with paddles (AFAIK only available on the R-design and never for wood steering wheel equipped cars). I'm not sure I like this user interface; can't immediately think of a scenario where I would want or use it - and seems too easy to accidentally invoke it.
Pushing forward on the shifter (in the T8) will get it out of the stuck gear mode.
Also found a note that the car should protect itself by changing gear based on RPM's - though it is not clear that this will happen if you over rev the car in first gear (causing it to go to second). Probably not a good thing to red line a car in first gear shortly after starting it anyway ...
Now that I've thought about it some more, I don't think there is any way I accidentally put my T6 into manual. My car doesn't have paddle shifters, so the only way to put it into manual is by moving the shift lever to the left. It seems highly unlikely that this would have happened inadvertently when making a turn.
Sorry to interrupt. Maybe this is the same "built-in" feature most Volvos have.
Since my first 2001 S60 T5 and XC60 D5 and now XC70 D5 these cars will stay in gear until redline if you start fast in a right turn.
Something to do with hydraulic pressures in the Aisin transmissions Volvo uses.
However, when this happens in my cars it always upshift - at the latest - by redlining.
Have you all tried and see if it upshifts it you continue to push until redline? Or does it cut engine revs and continue in 1st gear?
I've taken my XC70 to race tracks and there the transmission works fine in sport. However, tried a couple of times when pushing really hard on the autobahn that the lock-up features shuts down and gives trans error - probably due to high temperature.
Otherwise the new Aisin-Warner transmissions seems robust.
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Since my first 2001 S60 T5 and XC60 D5 and now XC70 D5 these cars will stay in gear until redline if you start fast in a right turn.
Something to do with hydraulic pressures in the Aisin transmissions Volvo uses.
However, when this happens in my cars it always upshift - at the latest - by redlining.
Have you all tried and see if it upshifts it you continue to push until redline? Or does it cut engine revs and continue in 1st gear?
I've taken my XC70 to race tracks and there the transmission works fine in sport. However, tried a couple of times when pushing really hard on the autobahn that the lock-up features shuts down and gives trans error - probably due to high temperature.
Otherwise the new Aisin-Warner transmissions seems robust.
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I assume this has to do with g-forces when turning/accelerating and hydraulic pressure cannot build up as fast.
Had a Peugeot 407 HDi with aut. It was terrible at doing this.
But of course you should treat this as a "new" claim towards the dealer to rule out anything else.
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Had a Peugeot 407 HDi with aut. It was terrible at doing this.
But of course you should treat this as a "new" claim towards the dealer to rule out anything else.
Sent from my iPhone using Tapatalk
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If it happens again check your driver's display (there are two versions - I have the larger - not sure what the smaller looks like) and see if it is showing a 1 ... that would tell you whether something has caused the car to go into manual mode. If so - if you push the shifter to the right does the 1 go away and the car shift normally?
I doubt this is a mechanical glitch, it sounds like its a SW issue, there should be a TSB for the transmission programming...
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Do you recall if the display showed a 1 for first gear? Did the display also have a tach - and if so, what did it rev up to?
I'd try to duplicate - but there are enough differences between the T6 and T8 (shifter, drive train, modes) that I don't think it would tell us anything ...
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