Is this some kind of a setting? It’s a vibration feeling.

 

I too have that vibration when reversing. I forgot to mention that when i took the rx for 5k miles service. It comes and go actually.

 

My 500h also have vibrations, but only when the engine is on.

 

Could you be feeling the engine coming on or off? (Electric transitioning to engine power, and vice-versa)

 

No, it's definitely not the engine turning on. The issue is easily replicable only when the engine is already on (sport mode will help with this) and then reversing or creeping forward.

 

Yep SPORT will keep the engine running...good observation.

 

It’s not the engine. I was thinking maybe at slow speed and having turned in to park the rear wheels might be pointed the opposite direction and the shuddering is the tires gripping?

 

I can replicate the vibrations by just reversing straight without turning the wheels, so maybe it's a different issue. But it's very likely something to do with the power split device / transmission / regenerative braking.

 

Please see my post regarding my new 500h going kaput. We had the same shuddering of the car in reverse. Lexus Corporate decided to change the transmission. Please have your dealer look at the car immediately. Take video of it happening to you and show them in case they can't replicate it.

 

Sorry, I noticed that you already saw my post. But I encourage you to take it to the dealer ASAP.

 

Mine has shuddered in reverse, mainly in tight spots since day 1. 9000 miles later it still does it, but no problems.

 

Long time member here and dozens of Lexus owned. I currently have a 21 LC convertible and a 23 Rx500h F-Sport. I have 7k on it. I too have the shutter in reverse that dealer cannot replicate but also have a hard shifting and they have diagnosed it to need a new transmission. I'm a huge Lexus fan, having owned hundreds in my lifetime (was an independent dealer as well) either personally or professionally. This would be literally the FIRST Lexus transmission I've ever had to replace. Although I have a ton of knowledge/experience with the brand, I'm dumbfounded on this one. It's just bananas! A brand new Lexus Rx needing a transmission? Wow. Not happy with my Rx500h purchase at all. I've had nothing more than 19mph in sport or normal mode. 21 in ECO mode, neither in the same ballpark as the advertised 27-28mpg. Not even close. The transmission is jerky and clunky at low speeds and hesitates dangerously trying to merge onto a busy street. I too have the shaking in reverse like it's going to stall when I back out of parking spaces. Rattles in the A-pillar, sunroof area were fixed by "missing fasteners" by the sunroof under the headliner point to shoddy craftsmanship which is also not Lexus-like. I LOVE the looks of the Rx500h but hate the engine. I traded in my 2019 Cayenne S for this and was promised great MPG at 27 and 400hp combined performance and have not felt either, at the pump or in my foot. Speaking of foot-thinking of ditching this before replacing the tranny due to having a paid off new Rx with a transmission replacement on its record. Resale for this down the road will be dismal with that on the CarFax, don't you all think? Being a former dealer myself, I had one SC I sold that had an engine replacement through the dealer and had a customer ask for a refund when I sold it to him and disclosed it when I sent him the service records. People do care about these major things being replaced, albeit it early on and under warranty. I'm concerned as well holding the bag on this in its history.

 

I hired a lemonlaw firm to get me my money back. I used to love Lexus but this car has me worried. I guess it's my mistake for buying the first year of a new model.

 

Thinking the same thing, seattleike. I used to give this advice out but was so impressed with the sharp looks of this Rx and the impeccable history of dependability it has, I thought it was a no-brainer. They should have kept the 3.5L in it OR dropped a true 500 in it-the 5.0L V8!

 

Im almost at 19K miles, 18955 as of tonight.

I have the shuddering in reverse since day 1- every single day as I back out of my garage. Its definitely the rear e-axle motor causing the shuddering. Lexus dealer looked at it and said its pretty normal. I tend to agree since I havnt has a single issue with my engine/tranny/AWD system in almost 19K miles. Im averaging around 29-30 MPG in NYC traffic and long work commutes.

19K miles in less than 9 months is no easy task for a car, especially a new powertrain and its rising up to the occasion.