I've had my LC for 1750 miles and notice some slippage in the torque converter in the under 25 mph zone when going uphill and giving gas but not full gas. It's more when partial gas could be the hybrid deciding what to do if engage the motor or hybrid so slips until give more or less gas? My transmission shifts great, ,I have zero shudders and my temperature of my tranny is good. I've been a manual guy most of my life or V8 auto so maybe just a 4 banger hybrid quirks that everyone has? It just feels like the torque converter could be dialed in better maybe there will be a software update anyone else notice this?
Torque Converter/Transmission slippage
- Thread starter motodog71
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I believe mine does something similar. It will hold about 3K Rpm’s. It’s an 8 speed so it may be trying to decide on what gear to use.
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- #3
Yes that’s it just feels like it slips a bit at 3k in 1st or 2nd sometimes for a second when try and figure out what wants to do.
Mine does this as well, I only have 200 miles on odo and was wondering how to exactly replicate. Is this something to worry about/fix?
My guess is a software update down the road will take care of this.
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- #7
T
It doesn't make a difference if its in sport mode with me. I think it may be solved with a software update probably a quirk to maximize fuel efficiency that I notice. If I go to manual mode randomly the auto seems to use all my gears. It shifts smooth with slow and fast acceleration. It's more mid acceleration on a hill that gets confused that notice it most. It holds or slips a bit at 3K trying to decide what to do for a second making the car more buzzy than needs to be at times.
I've noticed a pretty decent thump in the transmission first thing when backing out of our driveway and turning up the hill to leave. A bit concerning as it's very noticeable. Just had the first break squeal this morning as well when backing out. It's very loud. 670 miles on the ODO.
Where I leave from work I turn to go up a hill, as I ascend my transmission always has a noticeable hard shift/thump from 1st to second gear, it seems to hang on to first gear for too long. Not sure if its what your feeling, but the shift points seem to be off going up a hill.
I've noticed the same behaviour shifting from first to second as well, mine is 2.8 diesel that uses a similar 8 speed toyota transmission.
I notice my LC leaves from a stop in second gear frequently in eco mode. Weird.
Geeze i wish we could have that 2.8 diesel
Yes, this sounds the same
My Chevy 1500 used to always do that. Hasn’t been happening for me with the LC.
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- #15
I have noticed that the transmission does get better as learns. I have 3K miles now and feel the hybrid is more active absorbing downhill speed now for example and shifts crisper. I think the drivetrain overall is a bit quirky because of the hybrid vs a zf type transmission. I notice it most going through a round about and then uphill at 15 mph it will stay in 3rd as accelerate and hang the rpm while speed increases. Since speed increases it likely isn't slippage its the hybrid engaging over the top rather than shifting down to 2nd just sounds buzzy but that likely how designed.
- Thread starter
- #16
I think you are right the modes make a difference. Now that have 3K miles and experiment more in addition to tighter steering, the sport mode tightens the torque converter with hybrid over the top more to get less of the 3K rpm hang that feel in Eco mode.
I have noticed it too, and I'm at 1,200 miles.
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