Why can't they get this right we are going on now almost 2 years, I was really hoping to be able switch over finally to 500h this year.

 

Oh man sorry to hear about this, I would be too, hopefully something comes in sooner.

Right, I have the 2025 RX500H as of the beginning of this month, but have been following this thread ever since putting a deposit and waiting specifically for this 2025 model year. Too early to tell, but I have been driving it fairly easy, and local roads are basically at sea-level. Never 'floored' it either, haven't had a need to with it's power in local driving. Roughly 300 miles in, and fingers crossed on no future issues. Will keep thread posted though if anything pops up.

 

same thing happened to me just now. I switched gear to P then it stopped. Did you find out more info on this?

 

2025 owner here too. I just saw this thread, since it was in the sub forum of the 5th Gen. I'm just below 500 miles and I haven't felt any jerky-ness but also haven't paid attention. Additionally, I'm coming from a 2020 GX 460, which is a body-on-frame and inherently a rougher ride, so maybe I'm not paying more attention.

After reading this thread, I'll pay more attention but it seems like there's not one single way to 100% trigger it. It seems like everyone has slightly different way it triggers?

Here's what I'm thinking of doing to test it.

In all modes (eco, sport, normal)
- Downhill breaking
- Hard breaking
- Slow breaking
- Break and look towards the passenger seat? 🤷‍♂️

Do you guys have anything else you want me to add to test it?

 

My dealer tech described the transmission problem I have as "a parking lot speed issue". True enough, the car sort of "pulses" in very low speeds that are sometimes subtle, sometimes outright jerky. At first I thought it was an auto braking, fuel supply or ABS sort of issue. Occasionally, it also doesnt shift automatically between gears (ie revs high when it should shift down) as smoothly as I would expect. Im still driving mine while I wait for my parts/new car (whichever comes first!) I put a deposit on a '25 TX. I should maybe press for a loaner or something, but Im waiting to see. Loaner wasnt offered.
RRL

 

my 2023 RX 500h has had this same problem. It’s happened at least 5-10 times. Repeatedly at two specific locations. It is not a repeatable problem but I’ve experienced it multiple times. It’s as if the ABS system is rapidly firing and causes the car to jerk violently back and forth. The first time it happened I thought I had been rear ended. Lexus is blowing me off so now I’m trying to catch it on video. I am also keeping a log of the dates and times it occurs.

 

my 2023 RX 500h has had this same problem. It’s happened at least 5-10 times. Repeatedly at two specific locations. It is not a repeatable problem but I’ve experienced it multiple times. It’s as if the ABS system is rapidly firing and causes the car to jerk violently back and forth. The first time it happened I thought I had been rear ended. Lexus is blowing me off so now I’m trying to catch it on video. I am also keeping a log of the dates and times it occurs.

 

I'm glad they are accepting that there really is an issue. I took mine into my local Lexus Service Center and was advised that they would check it out on my next scheduled repair (which would have been a week later.) I decided on the spot, after reading numerous personal accounts describing the same issue, to trade it back in on a 2024 TX 500h f Sport. So far, it was the right decision. Here was a major shocker for me, I took my new TX back in for a small door ding repair and spoke with my regular service representative. I asked him if they were able to repair the car I had just traded back in, and he told me that they don't do anything to the cars after they are traded in, and it would be up to the next buyer to experience the issue, and then bring in back in for service and repair. Shocking!!

 

I am currently battling with Lexus over this very issue with my 2023 RX500h along with the lack of acceleration when moving from a stop. They cannot recreate either issue and tell me my car is safe to drive. I'm not buying it. Clearly, I'm not alone here. I've asked Lexus to please repurchase my vehicle so I can move into a different model. I have owned and loved almost every model Lexus has made for over 30 years. I am a lifelong fan but something isn't right with this particular car and I'm hoping they will honor my request so I can purchase a different Lexus model. I'll keep y'all posted!

 

Fellow RX500h owners - there is FINALLY a service bulletin related to this issue!
https://static.nhtsa.gov/odi/tsbs/20...16798-0001.pdf

It seems it has to do with a high state of charge with the hybrid battery, which corresponds with my experiences. Every time it has happened (5 times now) has been at the bottom of the same long hill, with the battery full from regen. Looks like it's just a hybrid computer programming fix. Fingers crossed that this solves the problem!

 

As usual, the TSB requires confirmation that the problem exists before they apply it.
I wonder how the dealers will verify that they need to update the software? I wish they would JUST DO IT if a customer complains!

 

For me, it happens at the exact same spot and time—when I leave the house in the morning to drop the kids off at school. It’s always at the same traffic light, with my foot on the brake and the car feeling like it wants to move. I honestly thought I was going crazy. It doesn’t happen every time I take them, but when it does, that’s when and where it occurs.

 

My issue also occurred 3x at the bottom of a hill after driving down it.
Dealership believed me, eevn though it didnt happen all the time, and no way I could repeat it. The work order said something like "VIN falls into specified range and date of production" or something like that (I should post it) so it was some problem they knew about. Anyhow, the day I brought the car in for its warranty replacement, I just upgraded to a new TX 500h. I didnt trust the Rx 500h any longer. I dont buy a new car to have the tranny go out in 1.5 years.
R

 

The dealer did the TSB fixes for me today. They actually applied two separate updates...one for the jolting when stopped and the other to fix jolting/hesitation when starting from a stop (I didn't even know there was a second fix available). I immediately noticed that the car was favoring EV mode more than before at slower speeds (I almost always drive in Normal mode), so I think the update prioritizes the battery over the engine when the charge is high. Maybe the jolting issue was because the car was flip flopping between gas and electric and couldn't decide. Time will tell if this solves the problem, but so far I haven't noticed anything negative at all. Acceleration is still good and maybe I'll get even better gas mileage now.

 

It also happens at me. My car is 2024 RX500H version which was produced in Aug 2024.