T-SB-0030-23 Newer Revision than June 23?

I sent my truck to the dealer on Wednesday for a malfunctioning active spoiler and while they were working on it, I asked them to look at a few other odds and ends with one being throttle lag. I got a call yesterday and was told they need to keep the truck for a few days to repair it as it falls under a TSB. I dropped by the dealer today to pick up some items out of the truck and confirmed T-SB-0030-23 is applicable to the issue I am having. The document the service manager showed me had significantly parts on it than what I can find for the files on car-complaints.com and elsewhere. Mostly out of curiosity, I would like to see the complete list of parts they are intending to replace. Does anyone know if the TSB was updated recently and where I can find a recent version of it? Dealership told me parts are on back order as well. Could be a few days, could be a few weeks. At this point I am glad I didn't trade my Sequoia in to get the truck.

Ironically, they couldn't replicate the spoiler issue, the reset it and called it good.

 

The tsb TSB-0030-23 you're referencing is for poor acceleration. Is that the issue you're having and were you able to demonstrate it to the dealership techs and did they agreed with you?

Are you asking if there's a newer revision for this tsb? Or you know there's a new revision in fact?

 

I asked them to look into an acceleration lag when the engine was cold from a complete stop. They verified it on their own and informed me they were going to go through the process to fix it based on the TSB. I did not have to demonstrate it for them.

I am asking if there is a newer revision than the June of 2023 one I can find on car-complaints.com. The version I was shown at the dealership had a quite a few more parts than the one I found car-complaints.

 

Ah got it.

Just to let you know... Over the past two years on this forum, there are maybe 3-4 members who were able to convince their dealership that they had throttle lag issue, and after come diagnostics and back and forth, nothing really happened of it, and nobody got any meaningful solution from the dealer.

So if you can please ask what's the tsb number dealer is trying to do on your truck and let us know as many have this issue... And now gave up and got used to it over the years.

Fyi, let's hope for the best but most likely your dealer is just trying to perform this tsb, replace some parts, get paid for this work by Toyota. And whether it'll solve your issue or not it doesn't matter to them. When their service dept is slow they agree to all sorts of tsbs whether applicable or not to make a coin.

Here's a link to our very long and depressive thread about the Throttle lag issue. We've lost too many good men / Tundra owners in this thread without any solution from Toyota. Is that the same issue you're experiencing?

https://www.tundras.com/threads/off...ue-s-t-sb-0111-22.106155/page-23#post-3667450

 

The one they showed me was T-SB-0030-23, but the repair was very extensive.

 

@eddiefromcali

Eddie, you had T-SB-0030-23 done last year. Did that improve your trucks acceleration? Do you have any throttle lag issue?

 

improved acceleration but did not fix throttle lag, the throttle lag reprogramming TSB fixed that.

 

Got it. Usually most people reported that the throttle lag tsb helped at first but then the issue returned. I guess for you it helped. Are you using premium 91 gas or regular?

 

Honestly, i thought they were going to do the throttle lag programming tsb only.

 

I run E30 mix for the most part and keep the JB4 on map 5

The fuel line TSB has to have certain DTCs present for it to apply. If you have those, then it would make sense to go that route first since no DTCs are required for the lag TSB.

 

There were no DTCs or CEL present when I took the truck in. T-SB-0030-23 doesn't address the fuel line, only acceleration and from the glance i got at the dealers version, fixes it by replacing most of the fuel delivery system along with the catalytic converters. The version i found on car complaints only shows the need to replace both cats and the fuel rails.

 

If no DTCs, then IDK why the dealer would want to perform that TSB. When I said fuel line, I was referring to the line they look at to confirm some debri/blockage...so whatever that is. The cats are only replaced if P0430 is present. I had everything other than cats replaced because I didn't have the cat specific DTC present.

 

I see what you are saying. Yeah I have no idea why they would think this is the route they want to take when there's no codes. It doesn't look like they are slow so I don't think that's it, perhaps the tech took something apart and found some debris.

It sure seems like debris is a reoccurring theme with these trucks.

Hopefully its not a months long process to fix it.

 

We'll know the truth soon. Let us know if this repair fixes anything

 

Update. Toyota has opened a "Tas Case" where the technician who performed the initial diagnoses rides shotgun with a computer plugged in while I drive the vehicle to verify the issue. I am confused by this as I did confirm the Technician who made the diagnoses did test drive the truck initially.

I will go to the dealership Friday and do the test drive to see what happens. I hope this doesn't delay me getting my truck back much longer.

 

T-SB-0030-24 was updated to Rev. 2 on May 23, 2024. That is the latest revision.

https://static.nhtsa.gov/odi/tsbs/2024/MC-11005156-0001.pdf

Rev. 1 - https://static.nhtsa.gov/odi/tsbs/2023/MC-10240048-9999.pdf

 

Thank you for this.

Update, I drove the truck while the tech was recording data. I experienced the lag once during that time (truck was fully warmed up by the time we started the test drive). The tech flagged that data and will send it to toyota for analysis.

I will report back once I know more.

 

@rlc177

Please let us know! Nobody had success so far with tracking down this throttle lag issue for the past couple of years.

 

The throttle lag has been present since the introduction of the V35A-FTS (Type '17) in the Lexus LS500.

 

After driving it today with the tech, i feel like its more of a driving style issue rather than a engine/programming issue in my case. There may be some strange interaction between how I anticipate the take off from a standstill and how the truck interprets what I am doing with the throttle. I should know more Monday about what toyota sees in the data logs.

 

Right... It's our fault of course, for expecting truck to drive when we press gas pedal. Great excuse

And why does all other cars and truck drive, or at least attempt to start driving, while our tundras sit idle like nothing happened for 1-2 seconds.

 

Yes I know, but maybe, just maybe Toyota will finally do something about it?

 

What is happening to yours may be different than mine has always responded when i press the pedal it just loses power momentarily then goes like hell once i start rolling.

 

Nope. It is 100% a programming issue.

 

I still have the issue but since the latest TCU the max delay is 325ms, and its hard to replicate the issue. I'm still confident it still happens and can happen.

There's a option in Techstream under Transmission Utility -> A/T Code Registration (Fixed Code) then selecting AJA0F/E seems to set a slightly different AT Compensation code than seems to help the learning process, but it could be placebo on my part.

 

Update,

The data provided to Toyota showed no abnormalities. I am picking the truck up tomorrow.