SecPole14

I've experienced the same thing. My 2014 GX is my first automatic transmission vehicle. I suppose it is just a normal part of the vehicle's behavior.

I am discovering a lot of quirks with the GX460, but I still like it. Nothing has been a deal-breaker so far. Thankfully this "surging" doesn't happen too often (although it happened to me this morning!).

asr1

I recently bought a 2013 GX460 Premium with the standard 6 speed auto. It has 10,000km / 6,000 miles. I switched after over 10 years of BMWs and Porsches, and this is my first SUV

I experience some very slight jerkiness with the transmission -- particularly at low speeds, or on occasions where I slow down and then re-accelerate

Are there any software updates etc available for resolving such issues, or is this just symptomatic of this type of vehicle?

asr1

I get that too. Maybe driving style needs to be adjusted accordingly

Quadro

Yes this seems to be happening to one GXs and does not happen to the others. I certainly have the same thing on mine. One thing that helped a lot in my case is lubricating the propeller shaft. That made it much better though did not eliminate the issue completely.

T4Fun

mine does same thing. feels like the transmission doesnt engage right away with engine. i highly doubt lexus dealer would know how to fix this. has to come from japan imho.

ohiois350

iTrader: (13)

My 14" it only jerk when I shift from N to D, do you guys experiment with that problem too?

ShawShank

iTrader: (1)

I get the same clunk from backing out of a parking spot and shifting into D. I've had 2 software updates and it seems to take care of the problem for a week or 2. I've even had some issues while shifting into drive while on an extreme incline and the truck rolls back a foot or so before engaging the transmission. The engagement is a violent and noisy occasion. My truck is a base '10 w/ 52k on the clock.

Craig B

I noticed it on my 2010, but haven't experienced it on my 2014.

Hammer208S

We recently had an issue with our 2011 GX460. My wife first experienced the transmission not wanting to engage after being put in drive. Once it did engage there was a loud bang/pop noise, then no issues afterwards. The same thing happened to me this weekend. It was weird, like the brakes had frozen up then suddenly released and the transmission slammed into gear. Anyone have an issue like this?
We bought the vehicle used a couple months ago with 39k miles. With factory warranty remaining it will be heading to the dealer shortly but thought I'd check with you guys.

Craig B

No, but I did have my brakes freeze up once this winter after I washed my car and parked it outside at the gym the next morning. My brake pads were frozen to the rotors. Sounds like a transmission problem for sure.

SaniDel

I believe Craig's first diagnosis is correct.

Every time I take our 2010 GX 460 to the car wash AND bring it home immediately ... we're less than two miles away ... then park and set the emergency brake this happens the next morning. We believe the emergency brake surfaces are still wet from the car wash and overnight the surfaces stick, presumably due to chemical action between the pad and drum.

This happens so repeatedly after the car wash that I routinely engage the emergency brake on the last downhill before I get home to heat and dry the surfaces ... not a recommended practice, but it solves the problem. The emergency brake 'squeals' until it is hot and dry ... about 5 seconds ... then I know it is safe to park and engage the brake. Alternatively, if we run errands after the car wash, the brake dries by itself. Unfortunately, I prefer to bring the vehicle home immediately after the car wash, which exacerbates the problem!

What is amazing is how thoroughly this will 'ground' the vehicle. Before we solved this we had to 'rock' the vehicle as if we were stuck in snow ... not a good idea in a garage with only a few feet of space!
Regards,

SaniDel


P.S. This doesn't happened in rain or snow and we always engage the emergency brake when we park. We believe it is solely because of the high-pressure water jets at the car wash getting into where rain and snow don't go.

Hammer208S

We've got an appointment on Friday, we'll see...

tecman

Please give an update when you find an explanation. Many buyers with problems come here and don't follow up. I have wondered what this OP found?
https://www.clublexus.com/forums/gx-...r-oil-cap.html

Hammer208S

The local Lexus dealer could find nothing wrong. They said a thorough inspection had been performed and no codes came up on the computer. So, we'll see...

SaniDel

Thanks for the report. We hear of problems, but we seldom hear their resolution ... or in this case ... non-resolution.

If this happens again, take note of what happened the day before. Was it raining, did you drive through water, did you go to the car wash and did you set the parking brake? The only time we have had this problem is when we go to the car wash, come home immediately, set the brake and park overnight. It is quite dramatic ... the GX strains and roars until the emergency brake releases with a bang!

Since it only occurs in this exact sequence (car wash, immediate park, set brake and leave overnight) it can't be demonstrated to our local dealer, therefore it can't be fixed! We are due for brake replacement this Fall so we will have them replace the emergency brake as well.

Until then I will continue to 'squeal' the emergency brake to dry it before parking for the night, but only after coming home immediately after the car wash!
Regards,

SaniDel