Harsh downshift to first gear just before stopping

[Ed1]

I haven't experienced the harsh, jerky, clunky downshift just before coming to a stop that others have posted about. Some posters have mentioned the harshness may be the change over from regenerative braking or the hybrid battery. But others have commented that it may be related to the transmission.

I just noticed on the GX550 forum that for that vehicle with the same behavior, a dealer cleared or reset the transmission's memory and that resolved the issue. Apparently, the transmission has a memory that learns how the vehicle is driven and stores that information.

 

[TakaraLC]

I had this initially but it disappear on its own. It could be a break-in procedure that the dealers are "skipping" by resetting the transmission software.

 

[Guest3885]

I have this issue and it was so bad one time, I had to apologize to my passenger. The other day, I even saw the yellow caution sign light on my dash and nobody was in front of me.

Tried everything and just when I thought it went away, it would come back. Found myself looking for a future replacement vehicle and this morning, made a service appointment with dealer.

Today, I turned back on PDA. Problem has now gone away. I think what I was actually feeling was not hard down shifting, it was the brakes being applied.

Something is wonky with the safety systems in this vehicle and I bet that is why it was updated for 2025 and includes new system sensors.

 

[TakaraLC]

I have this issue and it was so bad one time, I had to apologize to my passenger. The other day, I even saw the yellow caution sign light on my dash and nobody was in front of me.

Tried everything and just when I thought it went away, it would come back. Found myself looking for a future replacement vehicle and this morning, made a service appointment with dealer.

Today, I turned back on PDA. Problem has now gone away. I think what I was actually feeling was not hard down shifting, it was the brakes being applied.

Something is wonky with the safety systems in this vehicle and I bet that is why it was updated for 2025 and includes new system sensors.

Which sensor was updated?

 

[Guest3885]

• The Pre-Collision System with Pedestrian Detection has enhanced detection capabilities thanks to new system sensors. It receives enhanced intersection support with improved detection capability in certain circumstances. In addition to pedestrian and bicyclist detection, this system now includes the capability to detect a motorcyclist.

The Capable Toyota Land Cruiser Adventures into 2025 - Toyota USA Newsroom

PLANO, Texas (Oct. 1, 2024) – The 2025 Land Cruiser is the perfect blend of capability and premium features. First introduced in the United States in 1958, the Land Cruiser is the Godfather of Toyota’s incredible off-road heritage. The 250 series Land Cruiser enters its second year as an...

pressroom.toyota.com

 

[TakaraLC]

• The Pre-Collision System with Pedestrian Detection has enhanced detection capabilities thanks to new system sensors. It receives enhanced intersection support with improved detection capability in certain circumstances. In addition to pedestrian and bicyclist detection, this system now includes the capability to detect a motorcyclist.

The Capable Toyota Land Cruiser Adventures into 2025 - Toyota USA Newsroom

PLANO, Texas (Oct. 1, 2024) – The 2025 Land Cruiser is the perfect blend of capability and premium features. First introduced in the United States in 1958, the Land Cruiser is the Godfather of Toyota’s incredible off-road heritage. The 250 series Land Cruiser enters its second year as an...

pressroom.toyota.com

That is talking about the enhancements they made for TSS 3.0. Which is the same system 2024 has.

• Including the addition of Proactive Driving Assist, the Toyota Safety Sense features have been enhanced for TSS 3.0:

 

[KyLandcruiser]

I’m pretty sure the 24 has this also. This is all part of safety sense 3.0

 

[TakaraLC]

I’m pretty sure the 24 has this also. This is all part of safety sense 3.0

Yeah 2024 press release has the exact same section.

The Evolution of a Legend: The All-New 2024 Land Cruiser - Toyota USA Newsroom

PLANO, Texas (Feb. 20, 2024) – When it was originally introduced in the United States in 1958, the Land Cruiser kicked off a tradition of rugged durability that would ultimately cement it as one of the most respected off-road icons in the industry. Back after a brief pause, the all-new 2024 Land...

pressroom.toyota.com

• The Pre-Collision System with Pedestrian Detection has enhanced detection capabilities thanks to new system sensors.....