OFFICIAL: MY22+ Toyota Tundra - Throttle Lag/Hesitation From Stop Issue(s) - T-SB-0111-22

Due to the Throttle Lag or delay issue along with the wind noise on passenger side door and glitchy technology with android auto we traded in our 2022 Tundra Platinum yesterday.

Took truck to dealer several times and dealer just had no solutions. Even told me to not compare toyota turbo to other turbo vehicles when i complained about throttle delay.

So i got out while truck was still worth what we paid for it. i really like toyota and have owned several but it just feels like no support is being offered. My buddies 2022 Tacoma is built way better with no wind noise or throttle issues.

It was fun while it lasted because that 14inch screen is amazing when it works.

 

May I propose a possible difference between trucks/owners who experience lag and those who do not: could it be, in these days of throttle by wire and all the computer "stuff" going on in vehicles these days, that if one is a right foot brake person then the delay of lifting right foot off brake and going to gas pedal is what the engine computer is looking for and thus will not exhibit any or much lag? However for those left foot brake people (I am one) then the delay from brake to gas pedal is very short when necessary and that is not something the Toyota software people considered and thus the lag appears.
Just a thought, probably wrong but had to mention it after I was thinking about this.

 

Lots of possibilities with throttle lag.

One I discovered, when driving in hills and sharp curves, especially 20 - 45 mph and hilly, the use of “Sport Mode” seems to maintain a minimum rpm around 1,500 rpm in a gear that offers immediate response… even when I’m not feeling that “sporty”, it is then immediately responsive to throttle and much more “connected” to my inputs.

Rolling stops also, may find a higher gear than would be preferred for immediate acceleration, in “Normal or EconOmy” modes.

Even given all the computing power available, Sometimes a driver has to drive.

I lived with infernal combustion machines and carburetors for a few decades, so a couple mild stumbles when cold don’t surprise me.

 

Picked up a 2022 SR5 TRD OR on Oct 17th, I've put about 500 miles on it and have not experienced this lag at all. There is some ECO mode hesitation on occasion, but that's expected - zero delays from a dead stop, rolling stop, hills, etc., though.

I'll be watching for it, but I'm wondering if something at the factory was adjusted between the earlier VINs and mine, and just hasn't rolled out to the service depts yet. I believe I was about 3 weeks from getting a 2023...

 

The longer I have the truck, and the more times I experience this issue, the more I suspect it is a delay in the shift programing when slow rolling. Like the transmission is between 1st and 2nd and the computer kills throttle input until the tranny decides on a gear. I've still never had it happen after coming to a complete stop. I'm assuming that the complete stop forces the tranny to select 1st gear so there is no delay in throttle response. I dunno, just thinking out loud here...

 

Do you think you (one) could test this by putting it in S mode and manually downshifting to 1st as you slow down?

 

I suppose one probably could. I rarely think about the issue since it happens very seldom for me. I'd have to do this test all the time for an extended period to know if it eliminated the issue. In most on-road situations it's easiest to just fully stop briefly to avoid the issue. I'd still love to have a fix from Toyota of course.

 

I agree with this. For me, even with a peddle commander, it seems to only occur when not coming to a complete stop. Any other time it is fine. I think it is transmission tuning and shift points creating it in the 'slowing to a stop' situations where you don't really stop. In these instances, the pedal commander may even exacerbate the situation by applying more throttle more quickly to where when it does catch, it's more abrupt.

 

my has this issue as well. something i noticed. if you are in normal/eco and put the shifter in manual, mine shows 4th. in sport/tow its 3rd. i believe the truck is starting in higher gears. it would need to be confirmed with a scan tool. this issue is pretty noticeable with 35s. wish i could just set it to default to sport mode

 

I think this will be a simple re-flash once they figure out it is affecting enough vehicles and figure out how to fix the program.

 

Would something like this be updated OTA or does that require a dealer visit for re-flash? Seems to me that entertainment system could be OTA, but actual engine/transmission computer they would want to keep behind a firewall such as dealer flash.

 

Many years ago we had a grand cherokee that shifted really hard into 1st gear when coming to a stop every once in a while, it was fixed with an ECU re-flash at the dealer under warranty. I would think this would be the same if they do anything about it at all.

 

Walt Jr is that you?

 

Not me

 

I am having the same throttle lag since i purchased back in July. At the dealership now for 5k maintenance and oil/filter change. Told them about the issue, feeling doubtful for any resolution. they gave me a 23' sr5 tundra loaner that does not have the issue. They worked out a few kinks.

 

+1 here
At very slow rolling, at stop signs, there is definitely delay of almost 1 second before engine starts going and moving the truck forward.

Luckily I don't have many stops like this but it always happens for me at one stop sign on my drive home. It felt like this delay happens less in Eco mode and more often in Standard mode

I'm hoping that dealer will be able to solve this with an update.

Anyone have any tips or info on this?

 

I experience throttle lag only when cold and typically only one time, zero response upon light acceleration followed by a surge, again it only happens one time and only when cold, it’s not a big deal to me or at least in my case and hoping a simple software update will take care of it

 

Figured it out but it's not a fix. Next time you pull up to a stop where you know it's going to happen, slip the shifter over to manual. Mine indicated 3rd on the dash when I did this and has indicated 3rd on multiple FULL stops. I quickly shifted back to 1st and hit the throttle. Lag gone. I'll be curious what others find. I believe it's a misunderstanding between the trans position and ecu of some kind. Forcing down the 1st takes the confusion out of the system.

 

When I had my SR5, this is the way it seemed to me. Seemed like the transmission needed to be in a lower gear.

 

A thought. Toyota is using the same tune for the TTV6 and the Hybrid TTV6. He is what I'm thinking. The Hybrid uses the electric motor on start and then transitions over to all engine. This appears at approximately same speed as when the TTV6 has the throttle lag or is searching for lower gear just before stopping. Would be interesting comparing the mapping for each

 

Well... With everyone's help we now kind of know what's going on and why we see throttle response delay.

Now we just need to ask Toyota dealership to work on this and hopefully get a fix from Toyota.

Maybe there's already a fix available but we just don't know yet

 

I agree completely korslite. We got our 2023 1794 this week (Nov 11 build date) and have not experienced the turbo lag at all yet. But I can definitely feel the trans hunt for the right gear coming out of an almost stop. From full stop it's fine, it's just that slow roll almost stop that the trans does a half second hunt for the right gear. Just the nature of the beast best I can tell. Maybe Toyota will do a software update sometime, but I'm fine with it the way it is now that I understand it. I've had plenty of cars in the past (non turbo) where the trans shifting was much worse than this Tundra even considering this slow speed hunting. IMHO

 

When you shift into manual mode the number that shows up on the dash doesn’t necessarily mean that’s the current gear it’s in. It’s showing you the highest gear it will go into. Just an fyi as a lot of people seems to be getting this wrong. You can come to a stop, shift to manual, and then tap up to 10, but that doesn’t mean you will be starting in 10th gear…

 

Stupid question from someone who doesn’t own a 3G but who has owned a turbo: Does this only happen when first starting the vehicle or on cold mornings after sitting?

I ask because I know with my old ‘95 F250, it did the same thing as described above…and I realized the wastegate was essentially staying half closed per the ECU, I believe, so as to allow the engine to warm up. Once the engine was sufficiently warm, it went away.

 

It happens when engine is fully warm as well.

 

I noticed this since new. It stays in 3rd or 4th gear when doing a rolling stop. Not sure which.
I drive a lot in the mountains. When at greater speeds than a slow roll, bumping the shifter left, it will downshift a gear or two.
I is definitely remaining in 3rd or higher when decelerated to a slow speed.
It’s fine until you try to accelerate quickly and the torque converter says “not so fast”.

There may also be some momentary throttle tip-in hesitation with some trucks as far I know.

 

are you sure thats right? thats the way my ram worked, it was a highest gear lock out, but the tundra you can actually shift with the s mode so I think its correct in what gear its in, I can shift gears while driving and its actually shifting, like downshifting with a manual.

are the new ones different ?

 

I’ve tried the manual shift on TRD Pro hybrid, at the same stop signs where I noticed the engine lug/throttle lag with my previous SR5. Manual shift in hybrid goes to 4th gear. I down shift to 1st and it makes a noticeable difference on smooth take off, even in the hybrid.

 

No throttle lag on my Hybrid. Very smooth leaving in D mode with transition to stop and starts. Just broke 1000 miles this weekend and put in sport for first time.

Throttle response is crisp and the truck is surprisingly very fast.

My former Tundra, 22 Limited TRD OR, throttle lag was extremely bad during cold temps.

Once vehicle warmed up, throttle lag was there but not as bad.

Summer Temps throttle lag present, but not as bad.

All conditions, transmission transition (Hunting for gears) was noticeable unless you came to complete stop-pause-then pulled away.

 

There's now a TSB issued for this. Came out on the 16th.
T-SB-0111-22