RX500h possible transmission issue
4th Gear
Joined: Jun 2024
Posts: 4
Likes: 3
RX500h Humming noise in front axle, feeling at steering too
I haven't experienced any transmission issues with my RX500h so far. However, I've noticed a humming noise coming from the front axle over 70mph since it had 10 miles on it, and now it has 3,200 miles. I've reported this issue to Lexus three times, but their response has been that it could be due to active noise control, which hasn't resolved the problem.
Has anyone else experienced this? Additionally, does anyone know the return policy and trade-in options? Am I likely to incur significant financial loss?
Has anyone else experienced this? Additionally, does anyone know the return policy and trade-in options? Am I likely to incur significant financial loss?
Instructor
Joined: Jun 2023
Posts: 928
Likes: 496
From: NJ
Look at Posts 94 and above in this Topic:
https://www.clublexus.com/forums/rx-...l#post11665296
"It only hums, because it doesn't know the words" is the smart-guy answer
Last edited by Carbuff2; Jul 19, 2024 at 08:41 AM.
Intermediate
Joined: Mar 2023
Posts: 403
Likes: 170
From: New York
Did anyone see the TSB for 24 Tacoma sounds exactly the same issue as RX500h. Toyota advising it was issue with the supplier.
Sounds very similar, hoping this same issue for 500h, really hoping as next time around really want 500h.
Aisin cast the torque converter bodies some of them were not properly cleaned, leaving casting debris inside. That was picked up by the transmission fluid in the torque converter and migrated into the transmission. In the transmission it kills the shift solenoids, which is why they stop shifting into all of the gears.
https://www.tacoma4g.com/forum/threa...kup-tool.6809/
Sounds very similar, hoping this same issue for 500h, really hoping as next time around really want 500h.
Aisin cast the torque converter bodies some of them were not properly cleaned, leaving casting debris inside. That was picked up by the transmission fluid in the torque converter and migrated into the transmission. In the transmission it kills the shift solenoids, which is why they stop shifting into all of the gears.
https://www.tacoma4g.com/forum/threa...kup-tool.6809/
Last edited by John89; Sep 17, 2024 at 07:41 AM.
1st Gear
Joined: Nov 2024
Posts: 1
Likes: 0
Concerning incident occurred today while stopped: all of a sudden car starts violently jerking back and forth. I was on the brakes the whole time and issue stopped as soon as P was selected. Thinking it’s some sort of transmission software issue as the engine was off during this event. Has anyone else ran into anything similar?
5th Gear
Joined: Jun 2024
Posts: 5
Likes: 3
This only seems to occur in Normal or Sport modes and when either starting off from stationary or coming to a stop.
Does anyone else have this? It almost feels as if the car is using the cameras/sensors to preemptively force brake, but almost like an ABS pump rapidly firing. The whole car judders.
Does anyone else have this? It almost feels as if the car is using the cameras/sensors to preemptively force brake, but almost like an ABS pump rapidly firing. The whole car judders.
Lexus Test Driver
Joined: Jul 2017
Posts: 9,557
Likes: 3,398
From: NJ
Tell them to take you for a ride in a 350h and show you the same condition.
8th Gear
Joined: Nov 2023
Posts: 8
Likes: 5
From: WA
Concerning incident occurred today while stopped: all of a sudden car starts violently jerking back and forth. I was on the brakes the whole time and issue stopped as soon as P was selected. Thinking it’s some sort of transmission software issue as the engine was off during this event. Has anyone else ran into anything similar?
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10th Gear
Joined: Nov 2024
Posts: 11
Likes: 1
Hi guys, I have 2023 RX500h with 22k km already (I know). The issue I'm about to describe has happened about 6-7 times now, last time was today. It's hard to describe so please bear with me.
While driving, as you roll to a stop say at a stop signs the car starts jerking back and forth. It's almost disturbing. The only way I can describe it is that it feels like it's "stuck" trying to switch between gas and electric motor. Car doesn't move forward and the only way to disengage this situation is to put the car in park.
The jerks back and forth are so severe and heavy that it almost feels like it's gonna break the gearbox...
After the first 3 times I took it to the dealer and of course they couldn't replicate the issue.
Has anyone experienced this? Or knows what I'm referring to?
Thanks 🙏
While driving, as you roll to a stop say at a stop signs the car starts jerking back and forth. It's almost disturbing. The only way I can describe it is that it feels like it's "stuck" trying to switch between gas and electric motor. Car doesn't move forward and the only way to disengage this situation is to put the car in park.
The jerks back and forth are so severe and heavy that it almost feels like it's gonna break the gearbox...
After the first 3 times I took it to the dealer and of course they couldn't replicate the issue.
Has anyone experienced this? Or knows what I'm referring to?
Thanks 🙏
Yes, my Rx500h has maybe 5 times now, jerked violently when decellerating down a hill and coming to a stop. Its scary. Each time my fuel was low, so I wonder if that is relevant. Then it just recovers and all seems well again.
RRL
2nd gear
Joined: Nov 2024
Posts: 2
Likes: 0
Did you find out the reason?
Concerning incident occurred today while stopped: all of a sudden car starts violently jerking back and forth. I was on the brakes the whole time and issue stopped as soon as P was selected. Thinking it’s some sort of transmission software issue as the engine was off during this event. Has anyone else ran into anything similar?
10th Gear
Joined: Nov 2024
Posts: 11
Likes: 1
8th Gear
Joined: Nov 2024
Posts: 8
Likes: 0
concerning incident occurred today while stopped: All of a sudden car starts violently jerking back and forth. I was on the brakes the whole time and issue stopped as soon as p was selected. Thinking it’s some sort of transmission software issue as the engine was off during this event. Has anyone else ran into anything similar?
10th Gear
Joined: Nov 2024
Posts: 11
Likes: 1
I had the jerking issue checked out by the dealer today. They advised me it is in fact, a transmission issue, and they will replace it as a warranty claim. Apparently, this is also a KNOWN transmission issue for the RX 500h. My "status report" states the following: "Vehicle falls into the VIN production date and transmission production date. Transmission will need to be ordered".
Obviously, Lexus has pinpointed a range of vehicles likely to be affected by this issue, and I have won the lottery for it.
For the record, there are other issues besides the jerking. There is "pulsing" feeling at parking lot speeds, and also occasionally, a revving issue when the car wont click over to the correct next gear.
Even more awesome, is the transmission is back ordered 3-4 months!
I put a deposit down on a 2025 TX350. Also not likely to arrive for 3-5 months.
Wonder which will come first!
RL
Obviously, Lexus has pinpointed a range of vehicles likely to be affected by this issue, and I have won the lottery for it.
For the record, there are other issues besides the jerking. There is "pulsing" feeling at parking lot speeds, and also occasionally, a revving issue when the car wont click over to the correct next gear.
Even more awesome, is the transmission is back ordered 3-4 months!
I put a deposit down on a 2025 TX350. Also not likely to arrive for 3-5 months.
Wonder which will come first!
RL