RX400h

So releasing the brake eliminates the shudder? If the brake booster is leaking, that loss of vacuum could cause issues.

The OEM parts shops are also good places to check. (link above)

How many miles are on the transfer case? I wonder if you can get one out of a low-mileage GX 470 at a scrap yard.

Hello, Boti. Did the dianosis come from an independent shop mechanic? Who did the work? If that mechanic did the work, I'd take my vehicle back to him and demand that he fix the problem, once and for all. If you did the work, you may want to consider getting a diagnosis and quote from a Toyota dealership whose technician(s) have experience doing this type of service, previously.

Hello, Randy. Have you already checked rockauto.com? Lexus OEM parts - Search (bing.com)

Ours has more than 136,000miles on it and still running great.

You might want to peruse these technical service bulletins: 2001 LEXUS RX Technical Service Bulletins (TSBs) - ClubLexus - Lexus Forum Discussion

Have you tried using a code reader to see if there are any current codes? You can also bring your vehicle to an auto parts store to see if they can check.

Most of the time, the culprit is one or two things: 1. Air in the brake lines - requires a thorough fluid flush 2. The master cylinder seals are worn. This can be due to age/frequency of use or when someone bled the fluid, he had someone press the pedal all the way to the floor, repeatedly. Your master cylinder piston typically travels approximately half of the total distance. Over time, the cylinder can wear up to that point, leaving a "lip" in the cylinder wall. When someone pushed the pedal to the floor to bleed the system, the piston seal can be damaged, resulting in leakage. Start with #1 to see if that fixes the problem.

Much depends on the length of the drive when you take the vehicle out. With ANY ICE or hybrid vehicle, if you drive 5 miles to go to a store or other destination, then drive home, the alternator may not be charging the battery sufficiently. Whenever I take any of our vehicles out, and my destination is a short distance away, I purposely travel further down the highway, turn round and come back. My batteries last close to 5 years each. A battery "tender" is not needed unless I am traveling on vacation or work and will be gone for many weeks.

There was a big discussion about a similar issue, but apparently it was AWD LS460s. The TSB on page two starts with model year 2012, I believe.

When you can't turn the ignition key, try tapping the rear of the key and then trying again.

Is it just the license plate frame?

What happens if you place the transmission in neutral and raise the engine rpm? (When the engine had been warmed up)

How to Test for CO2 in Car Coolant | It Still Runs

Do you have a mechanic's stethoscope? That would help pinpoint the source. My initial guess would be a loose/worn belt or pulley bearing. I agree that it should not be the transmission unless perhaps it has 400,000 miles on it.

This statement by Cduluk may have something to do with it:

That is very odd. By the way, many years ago, one of our keys was not going all the way into the ignition, which prevented it from enabling the ignition switch to rotate. I had to tap the key to get it to go all the way in. Once I did that, I could rotate the ignition switch and pull out the key. I then squirted some powdered graphite into the key opening. That was over 10 years ago, and we never had that issue again.

2003 LEXUS GX470 4.7L V8 Power Steering Pressure Hose | RockAuto

Ah, so you may be able to scratch that off the list.👍

At what temperature are they (fans) supposed to come on?

Why would you need one?

Does it still vibrate if you let off the gas? It looks like it could be a suspension issue.

Other than the oil hose leak (which should've been upgraded to the hard version), Consumer Reports' 2018 Buying Guide shows that the 2011 RX450h has had no problem areas when they were 7 years old. Our 18 year-old RX400h has been near perfect.

1. See if you get ahold of a maintenance schedule for the vehicle you are interested in. 2. Conduct a phone interview with the owner and ask if and when the required maintenance was completed. 3. If you are satisfied with the answers, schedule an in-person visit. If you are not a hands-on type of person, you want to bring someone who is familiar with how to check fluids for color and levels. 4. You can also pay an auto repair shop to do a complete inspection. Having a lift really comes in handy for looking at the underside of the vehicle.