XiaobinHao

9 hours ago, RX400h said:

That may be a failing brake booster check valve.

This page shows where it is located. It looks to be fairly easy to replace.

2015 Lexus RX 350 Power Brake Booster Check Valve - 4473022150 - Genuine Lexus Part

The part itself is less than $45.

Thanks!

Hi All, 

      My 2015 RX350 ran fine until last month.   I did some shopping and when I came out to start the car, the brake pedal was very hard to depress, so I could not press the start button to start the car.   I had a friend come over and push the pedal down, started the car, and it didn't happen again for a few weeks.   I searched some forums and found that its probably either the check valve on the vacuum booster, or the booster itself leaking.  Since it happens rarely and I can park the car for days or a week and it doesn't happen, seems to be that it is probably the check valve.  Dealer won't give me a price to first replace the check valve, they just want to do open ended diagnostics.  I can't see how they can diagnose this if it happens once a month!   i think they want to run the bill up.

      Has anyone had this problem, and if so, any idea what a reasonable dealer would cost to first replace the vacuum check valve, grommet and vacuum hoes?  Best I can estimate its about 100.00 in parts, for real lexus parts.

Thanks!

X

Thanks, Denny, yes we're hopeing Lexus does us right, but so far its not looking good.

Help!!! My wife bought a 2014 Lexus RX 350 a few

months ago from Watertown Lexus here in MA.

A couple of weeks ago, we noticed paint peeling off the very top edge of

the rear bumper cover (the black plastic part that is painted the color of the

car).

The dealer inspected the car carefully, and said that Lexus Corp would only pay to strip

the paint off the plastic part and

re-paint it. We're furious that first of

all this could pass through quality control, but that Lexus would not replace

the bumper cover. It can't be cheaper to strip the paint off than just replace

the plastic, as far as man hours go.

And we're scared that the paint just won't hold in the long run.

Has anyone else had problem like this? We've never heard of this before on a brand new car,

much less a Lexus. We thought they had

very good quality. Any suggestions

greatly appreciated.

Oops, sorry, just found we posted in wrong year forum. Working on how to move this post to the right year forum.

Hi All,

Help!!! My wife bought a 2014 Lexus RX 350 a few
months ago from Watertown Lexus here in MA.
A couple of weeks ago, we noticed paint peeling off the very top edge of
the rear bumper cover (the black plastic part that is painted the color of the
car).

The dealer
inspected the car carefully, and said that Lexus Corp would only pay to strip
the paint off the plastic part and
re-paint it. We're furious that first of
all this could pass through quality control, but that Lexus would not replace
the bumper cover. It can't be cheaper to strip the paint off than just replace
the plastic, as far as man hours go.
And we're scared that the paint just won't hold in the long run.

Has anyone else
had problem like this? We've never heard of this before on a brand new car,
much less a Lexus. We thought they had
very good quality. Any suggestions
greatly appreciated.