Hope everyone is having a good weekend! Man the transmission on this car is so different then the GS430 I had. It used to idle so fast, the second you take your foot off the brake it’s launching forward or reverse. Effortless driving. When I’m parking the RX (2017 F Sport) sometimes when I put the car in reverse I feel the car shake into gear. Also, I notice if put it in reverse sometimes the car won’t move it will just stand still until I press the gas pedal a little to get it going. The reverse just feels very weak on this car.

 

Yep, I had the same issue on my previous 2016 RX 350. It started shaking/clunking when I put it in reverse too fast after stopping after about 2K miles - see my post here https://www.clublexus.com/forums/rx-...n-reverse.html. It would only do it when I go forward, stop, and then reverse. To prevent the clunking I had to make sure I wait a couple of seconds after stopping before putting the transmission in reverse. That car was a 27 months lease and the transmission didn’t really get any worse or better until I returned the car. Lexus might’ve fixed the issue in 2018 and later models. I have a 450h which has a totally different transmission so I wouldn’t know. Ask the dealer as they might have a TSB for this issue and hopefully it is just a software fix.

 

Yea for sure it’s from switching too fast because when I pause a second before shifting to reverse I don’t get the clunk. I just got the car so I’m still getting adjusted to it. The part that was driving me crazy is sometimes when I shift into reverse the car won’t move on it’s own until I give it a light tap of gas. I have now realized it’s all because of low RPM. When I have the AC on (raises idle rpm) the car drives amazing, zero problems with reverse and effortless parking without me touching the gas barely. If I keep the AC off, sometimes when I switch to reverse the car doesn’t move on its own until I press gas. If it does move the reverse speed just feels extremely slow compared to any car I’ve driven. With the AC on the idle speed is much better. The other day I confirmed this when I was parking, switched to reverse and the car wasn’t moving at all. I turned on the AC and watched the RPM go up a little and the car started moving. I wish I knew all these issues existed and did the proper research instead of just assuming all Lexus’ are great. I would’ve definitely went for the 450. Plus I’m only getting about 13-14MPG in the city which is horrible.

 

I have a 2017 RX350 without any of these problems with the AT, take it to the dealer and have them adj the idle or reprogram the tranny. What you are experiencing is not normal.

 

17 for me as well and no issues like that.

 

Same for me also. Take it back.

 

Did you guys have the hesitation issue and get the TSB also? I’m definitely going to drop it off at service. Huge difference with the AC compressor on when I’m parking the car.

 

Brought it to the dealer. Let’s see if they can fix it because when the car is not warmed up it reverses perfect. I bet they can’t replicate the problem

 

I'll assume you explained that to them so they can test drive it first.

 

They called back saying it’s fine and they couldn’t find any issues with the reverse. They even hooked it up to their computer and drove around. The funny part is I got a 2019 loaner RX350L with the 20” rims and I noticed it doing the same thing pretty much. I guess it’s “normal”. The reverse just seems slower on this car compared to any other car I’ve driven. Especially on any slight incline or hill. I also had a loaner with 18” rims the other time and the reverse was much stronger and better. I’m thinking it’s the weight of these 20” rims?

Besides this, it’s amazing how much better the loaners with Michelin tires drive then mine with the Bridgestone ecopias. They just feel like softer tires. Now I can see why there is an entire thread dedicated to the tires.