Last post on May 26, 2013 at 12:55 PM
You are in the Lexus RX 300/330/350
What is this discussion about?
Lexus RX 300, Lexus RX 330, Lexus RX 350, Auto Repair, SUV
Go to NHTSA to file a safety complaint.
Or call Monday-Friday (8 am to 8 pm ET) (888) 327-4236 TTY: (800)424-9153
#417 of 457 Re: Help! Need advice! Braking, unintended acceleration [nateg1]
Jan 25, 2012 (10:02 pm)
If hundreds of others have had both the braking systems fail and the vehicle accelerate by themselves out of control at the same time, why is the NHTSA not involved?
Did you get the Highway Patrol on the scene to take a report when this happened to you?
#418 of 457 Re: Help! Need advice! Braking, unintended acceleration [nateg1]
Jan 26, 2012 (7:53 am)
Brakes completely failed
How is that possible?
Brakes are not by-wire, they have hydraulic lines that are independent from the throttle. If you've ever bled the fluid from the lines you'll know what I mean.
So he's saying both the throttle-by-wire and hydraulic brakes failed at the same exact time, by pure coincidence?
I'd believe reduced braking, but not complete failure.
#419 of 457 Re: Help! Need advice! Braking, unintended acceleration [ateixeira]
by Stever@Edmunds HOST
Jan 26, 2012 (7:57 am)
What was the argument again? WOT and pumping of the brakes causes loss of the vacuum assist?
Oh yeah, Consumer Reports says pumping can make a bad problem even worse.
#420 of 457 Re: Help! Need advice! Braking, unintended acceleration [steve_]
Jan 26, 2012 (8:20 am)
Most drivers know not to pump the brakes with ABS, and that would be driver error.
#421 of 457 Re: Help! Need advice! Braking, unintended acceleration [ateixeira]
Jan 27, 2012 (11:28 am)
Due to the need for VDIM (Trac/VSC/ABS/EBD/etc) to have the ability to close off brake fluid pressure to any or all wheels this is not entirely impossible.
One of the reasons, causes, for which I have been "campaigning" for ONLY rear braking for moderate braking levels as a way to help "stabilize" the vehicle on marginal roadbed surfaces. Only open the front brake pressure control manifolds for brake pressure above a certain level or if the rear wheels indicate imminent lockup.
#423 of 457 Re: Check AWD System Error [ncaler]
Jan 27, 2012 (11:54 am)
As of 2010 a new F/awd system(***) was adopted for the RX350 and it sounds as if the service tech was not up to speed on this matter.
A loose gas cap will almost always result in a CEL and by default a VSC fault.
Just a guess but it seems to me that a Check AWD system would most likely result from a poor or imtermittent electrical connection to the rear drive clutch control solenoid.
There is an off-chance that the rear drive clutch itsself failed to fully engage during low speed acceleration even with a full voltage aplication. That would be detectable by the system "monitor" if you developed some level, even minor level, of left or right front wheelspin/slip without an appropriate left or right wheelspin/slip at the rear.
Remember any indication of such an instance...?
*** First adopted in the US by Ford for the (2005-7[?]) Escape/Mariner and then more recently by Toyota with the introduction of the new Sienna.
Oh, your dealer was blowing smoke.
#424 of 457 How to disable "easy exit" feature
Feb 29, 2012 (10:21 pm)
2012 Rx 350 non Navi version. The seat movement of the "easy exit" can be disabled through customization features, but driving wheel still moves down when existing the vehicle. Is there a way to disable this feature through personalization settings? Or I have to go to the dealer's place? Thanks.
#425 of 457 Re: How to disable "easy exit" feature [aamixy]
Mar 01, 2012 (3:51 am)
To disable the steering wheel movement, you have to take the car in. The dealer will take care of it in few minutes. Personalization settings will give you only limited access to same settings.
#426 of 457 Does the RX350 slow down when u switch to Snow Mode?
Mar 01, 2012 (5:22 pm)
I was driving along at about 35 mph when I saw some snowy patches ahead and so switched the car into Snow mode (this is the ECT mode that you can activate using buttons on the steering wheel). I have the AWD version.
As soon as I did that, the car noticeably slowed down to about 30 mph - almost as if I had tapped the brakes. Has anyone experienced this and is it normal?
Thanks in advance.