Transmission Inquiry

I would advise everyone to contact Toyota corporate and make our concerns heard.

 

The shifts were hard enough that I could feel them more than hear them--if that helps!
Cheers,
db

 

I think so these stories have most 4th gen owners worried anytime we get a weird shift hence my statement on Toyota needing to issue a statement or tsb or recall fast. Internet info travels fast and it’s gonna kill their reputation especially with the tundra nightmare

 

The 1-2 shift seems to be a bit harsher during warm up but it’s buttery smooth once it’s warmed. I’ve got almost 1100 miles and my only complaint in the driveline is I have what I describe as a clunk when coming to a stop. Seems to only happen if I brake somewhat hard. If I coast to a stop it usually doesn’t happen. It seems to be downshifting from 2 to 1. But it sounds like it’s coming from the rear of the truck. Some have said their 3rd gen has done something similar since day 1. I have no clue what it is but I’m bringing it up once I go into the dealer.

 

You guys need to get them checked-out, complaining here isnt going to get anything resolved....
but, but, ill be without my truck for a few days....

 

It will help by posting here. Best believe Toyota looks throughout these forums and Facebook groups

 

Maybe the marketing interns. But, for the hard data any mfgr has a mechanism for that. That means dissatisfied customers starting the data collection by reporting in to the dealer. Which is his point. How does one actually know that some rando <username> owns what he says he owns and has problem he says he has? I would totally disregard. But, that is just pragmatic me.

 

I work in R&D and can tell you that it is not uncommon for things like that to get caught during development, but sometimes there is not time to fix them before release. You can’t delay release for every minor issue. You’ve got to say “good enough” and add it to the list, to be fixed when able.

 

Agree but I would still think even marketing relays some of this info back to Toyota engineers. If people are complaining of a certain issue here and it matches up with dealer report feedback I’d think it would help the cause of getting Toyota to fix the “problem”

 

Completely different transmission, what fixed an issue in the previous gen may not be the answer in this situation...

Posting here will do nothing inregards to getting your vehicles checked out & verifying if you possibly have an issue in the making....
If they need to tweak some updates, etc...
Only way your going to see a pattern & get the paper trail is by having them check your vehicle, not posting on forums about it...

 

I have noticed the stopping hard shift. It is 100% of the time regardless of hard or soft braking in tow haul mode. I tow a boat regularly. 3-5 times a week. There is a clunk at every stop. It is buttery smooth outside of tow haul mode personally, but it is very noticeable in tow haul for me. My next oil change is coming up and I will bring it up as well.

 

If mine did it 100% of the time it would drive me insane. Mine seems to be 50/50. I don’t know what it is and I haven’t really had anyone ride with me to pinpoint exactly where it’s coming from but my clunk seems to be coming from the rear end. If I brake harder it’s noticeable but if I really coast to a stop it doesn’t clunk.

 

Are there any 4th gens that don't jerk like that when shifting into D and R? I thought it was normal

 

Sounds like the clunks, hard/weird shifting, and jerking from park to drive to reverse etc are reported by the majority of people. I’d say the people that are saying theirs is fine prob just don’t feel or notice this stuff. Kinda pathetic really.

 

I don’t get the clunk in anything other than tow/haul. And I don’t want it to sound like it’s is some massive slam. It is a very slight clunk. Not saying it isn’t an issue, but I also don’t want to make a mountain of a mole hill.

As for the hard shifts from P to R and P to D and 1-2. What I have noticed is waiting until the truck warms up a little eliminates all of them (as well as easing into it for the 1-2 if I didn’t allow it to warm up for a minute or two) and the P-D/P-R hard shifts are eliminated for me as long as I wait until the RPMs drop to normal idle after start up. This has been the case for every 8 speed (Silverados) I have owned for whatever reason. I am not sure there is any issue here although I will admit it is not a great feeling when it happens.

 

Doesn’t bother me… It shifts firmly to drive. Definitely not clunky or jerky in my opinion. Several people have driven mine, all have been impressed and said nothing about shifting to drive or reverse.

 

Reference post #19: Took the Truck to the local Toyota dealership today to have them check it out for any error codes etc. Note that the vehicle has not repeated the issue noted in post #19 and the dealership could not duplicate. They said they tried with it cold and warmed up, on an upslope, on a down slope, etc and could not make it repeat the issue of it not coming out of park. They checked the computer for the latest software, which I have, and for error codes and found none. If it does it again I will video it on my phone if I can make it repeat and return it to the dealer. They understand my frustration and I am confident they did all they could to repeat. They did allege that the occasional hard shift is normal-of which I am a skeptic-- it did not do that until it had about 2k miles on it which I explained when I dropped it off--currently at 3200.

A little concerned that it might leave me stranded at some point!!

BTW, I just checked the NHTSA site for complaints on the 24 Tacoma--24 official complaints and 16 are for transmission fails/issues.

Stay safe!
Cheers,
db

 

I’m really hoping Toyota comes out with a statement soon this stuff is getting creepy. We’re such a small minority of Tacoma owners in this group and there’s been plenty of complaints. Imagine all the people that aren’t on forums or social media. It’s gotta be a wide spread issue

 

Also took mine to the dealership today. Service writer had the shop foreman look at it.

- Said no codes.
- Could not reproduce the hard shift issue. To be fair the issue only lasted ~500 miles (1600 - 2100 mi, now at 2600), I made them aware of this. Said this was the vehicle learning driving habits. I did confirm as someone else stated that the truck shifts down early in Tow Haul mode causing RPMs to spike and you to jerk forward. This is fairly consistent and likely by design (transmission braking?).
- Said that his new 24 Tundra does the same jerk between drive modes and that this is normal.
- Said Toyota may tweak the shift characteristics in a future update.
- Pulled some internal transmission logs and blamed me for “shifting during fore / aft movement”. I assure you I make a point to never do this. Since I didn’t take ownership of the truck until 7/18/24 @ 17:00 or so, none of those logs before 8/24 were me.

8/28 - No idea what this event is
8/27 - No idea what this event is
8/24 - I did rev the vehicle in P twice on purpose, no idea what the transmission torque limit would have been for

The issue has been reported to Toyota. I will drive the truck like all is normal. If the transmission does anything crazy, it has been documented.