LX600 Shifts Normal?

[JSLx]

Hey Everyone,

I’ve scoured the internet and forums including YouTube POV videos and couldn’t find anything on what I’m experiencing; hope to get some insights here.

A few months back, we purchased a new LX600. Right after we got it, I noticed a dip in RPMs after upshift and obviously after the initial RPM drop. Took it to dealer and they think bad gas (Costco 93). They said $500 to clean injectors or just drive and it will go away. Ok, whatever. 3k more miles later with lots of expensive Shell 93 through the engine, we still have the same problem. But before I go back to dealer I’m curious; has anyone experienced this? Is the “double dip” intentional to soften the upshifts or maybe a software issue? Here’s a video I took a while back; no change since. Oh, and it doesn’t happen at WOT; only casual driving.

 

[fajitas21]

I see what you're saying - I've seen other vehicles in Toyota's line up do this, namely Tacoma. The 6 speed AT has a longer spread between gears, so perhaps less noticeable here, but I'm willing to bet it isn't anything significant. Save this post for later when you can make fun of me in like 5 years when transmissions are exploding all over the place, but I feel pretty confident that you're ok.

That dip might be just a reporting thing to the computer too, or, as you theorize, a "double tap" of the torque converter or clutch pack to smooth the shift.

Pure speculation - I'm not a mechanic just hoping to save you $500 that I highly doubt will make a difference.

 

[JSLx]

I see what you're saying - I've seen other vehicles in Toyota's line up do this, namely Tacoma. The 6 speed AT has a longer spread between gears, so perhaps less noticeable here, but I'm willing to bet it isn't anything significant. Save this post for later when you can make fun of me in like 5 years when transmissions are exploding all over the place, but I feel pretty confident that you're ok.

That dip might be just a reporting thing to the computer too, or, as you theorize, a "double tap" of the torque converter or clutch pack to smooth the shift.

Pure speculation - I'm not a mechanic just hoping to save you $500 that I highly doubt will make a difference.

Appreciate the feedback, thanks! Hoping to save the $500 as well.

 

[LWA55DAL]

Just my 2 cents but when I bough my early production 200 series in 2016 it shifted horribly in slow stop and go traffic. I had the dealer reset the transmission ECU at least 3 times and there was an initial improvement and then it would fall back into the same shift pattern. It was particularly bad between 2-3. The gas comment is pure stupidity from the dealer. I would have them reset the ECU and see if that helps. Keep in mind it’s a learning transmission so it takes a while to learn your driving style and adjust the shift paterns accordingly.

Also - try driving if in tow/haul and see if that changes the way it shifts. If it does and it shifts better - it’s a learning programming issue. My 16 shifted fine in tow/haul and like garbage in normal.

I could never get it to shift like the ‘11 so I sold it and got a ‘20 HE. The transmission on the ‘20 shifts flawlessly.

 

[PeteyPools]

Hey Everyone,

I’ve scoured the internet and forums including YouTube POV videos and couldn’t find anything on what I’m experiencing; hope to get some insights here.

A few months back, we purchased a new LX600. Right after we got it, I noticed a dip in RPMs after upshift and obviously after the initial RPM drop. Took it to dealer and they think bad gas (Costco 93). They said $500 to clean injectors or just drive and it will go away. Ok, whatever. 3k more miles later with lots of expensive Shell 93 through the engine, we still have the same problem. But before I go back to dealer I’m curious; has anyone experienced this? Is the “double dip” intentional to soften the upshifts or maybe a software issue? Here’s a video I took a while back; no change since. Oh, and it doesn’t happen at WOT; only casual driving.

I had the same issue, Lexus had it for 2 months - installed a new transmission...which i thought was BS. They ended up giving me a new car. Its a 24'

 

[JSLx]

Not surprised:

Toyota recalls over 100,000 trucks, Lexus SUVs over possible debris in engine

Toyota announced a recall of over 100,000 vehicles Thursday. Here's what you need to know.

www.usatoday.com

 

[Joe T]

I had the same issue, Lexus had it for 2 months - installed a new transmission...which i thought was BS. They ended up giving me a new car. Its a 24'

Mine is doing exactly whats in the video too and i can feel it occasionally. The dealer reset the relearn on the transmission and it helped some.

Did the new transmission help yours? Does your 24 do this (mine is a 24)? Anyone else experiencing this.

 

[Joe T]

Anyone else, yes or no? Is this normal?

I want to figure out if this is normal so I can start modifying this thing. I certainly feel it but maybe it’s because of the AWD system and I would be ok with that and just pull the ECM or whatever and send it off for programming to get rid of this ridiculous rpm fluctuation.

Will be so annoyed if I have to lemon this thing. Its optioned perfectly.

Its like its slipping with rev fluctuations and it also holds low gear and jerks in traffic. Sometimes it has delayed harsh downshifts when doing a ‘California roll’ - acceleration at a stop sign.

 

[Cincodemustache]

This is normal for me and I have pretty much been able to get used to it and anticipate it.

 

[Sinister]

Mine does the same thing.

 

[URJ150L]

I have an is500 that occasionally does this

 

[Joe T]

The dealer tells me its normal. The transmission tuning is really bad on mine all around. I may pull the ecu and send it off for tuning.

If anyone has one in the Houston area I would like to take a ride in it.