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Lexus RX 400h Suspension/Steering Problems

17 messages,  Last post on Jul 17, 2009 at 3:02 AM

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What is this discussion about? Lexus RX 400h, Steering, Suspension, Hybrid Cars, SUV

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#8 of 17 Power Steering Computer Failure by Sylvia STAFF Jul 13, 2005 (10:59 am)
I just received word that the RX 400h in our long-term fleet is in the shop. The Power Steering Computer failed. The vehicle has less than 3,000 miles on it. It needs a new computer which is on backorder at the dealer. The vehicle will be in the shop for at least a week. Replies to this message: horns1976 (Jul 22, 2005 7:37 am) Sylvia (Jul 26, 2005 6:40 pm)
#9 of 17 Re: Power Steering Computer Failure [Sylvia] by horns1976 Jul 22, 2005 (7:37 am)
Replying to: Sylvia (Jul 13, 2005 10:59 am) Was the dealer able to resolve this problem and get the vehicle back on the road again??? Replies to this message: Sylvia (Jul 26, 2005 6:40 pm)
#10 of 17 Re: Power Steering Computer Failure [horns1976] by Sylvia STAFF Jul 26, 2005 (6:40 pm)
Replying to: horns1976 (Jul 22, 2005 7:37 am) I don't know but we should be able to read about it in the next long-term update on the vehicle when it is published. If I venture down to editorial I'll be sure and ask.
#11 of 17 Steering Wheel Sound by chtimi59 Nov 18, 2005 (10:06 pm)
Does anybody experience a "zzzzzzzzzzzzzzzzzz" sound turning the steering wheel any side during the first quarter of the rev (between 0 and 90 degrees)???? Thanks et merci.
#12 of 17 Steering Wheel Noise by camilo Jul 09, 2008 (8:57 pm)
I recently purchased a 2008 RX400h and I was wondering if anyone has been experiencing a noise coming from somewhere in the front part of the cabin every time the steering wheel is turned? The sound is generally heard when making a right turn. Any ideas of what may be causing this???   Thanks. Replies to this message: wwest (Jul 10, 2008 7:01 am) DreamParty (Feb 12, 2009 7:25 am) lparadis (Jul 14, 2009 3:44 pm)
#13 of 17 Re: Electric Steering [lexustek] by wwest Jul 10, 2008 (6:58 am)
Replying to: lexustek (Feb 14, 2006 9:18 am) Toyota electrically assisted power stearing uses a "torque" tube between the stearing wheel and the rack and pinion gearbox. They have a positional sensor (synchro) at each end of the torque tube and so as the torque tube twists due to your pressure on the stearing wheel the sensors detect the level of twist and direction and energize the electric motors accordingly.   There has been at least one instance wherein the torque tube took on a permanent "twist", resulting in the electrics driving the stearing in opposition to the stearing wheel direction. Probably/maybe because someone put too much effort into turning the stearing wheel with the ignition off and the vehicle stationary.
#14 of 17 Re: Steering Wheel Noise [camilo] by wwest Jul 10, 2008 (7:01 am)
Replying to: camilo (Jul 09, 2008 8:57 pm) That description most commonly indicates a failing or failed CV joint.
#15 of 17 Re: Steering Wheel Noise [camilo] by DreamParty Feb 12, 2009 (7:25 am)
Replying to: camilo (Jul 09, 2008 8:57 pm) Hi There,   Yes I am having the same problem on my 2008 RX400h, and the dealer reinstall every part of the front panel, and the sounds are still there!! They are going to replace my windshield, but I don't think that's the problem. Has anyone fixed this problem?   thanks!   Andy Replies to this message: lparadis (Jul 14, 2009 3:44 pm)
#16 of 17 Re: Steering Wheel Noise [DreamParty] by lparadis Jul 14, 2009 (3:44 pm)
Replying to: DreamParty (Feb 12, 2009 7:25 am) I have a Rx400h 2006. When I turn the wheel sharply as in backing out of the garage, I hear a semi-loud noise (like a clunk) It is getting progessively worse.Is this what you are experiencing? .For lack of anything better to say, the dealer now says that it is "normal".. Our Mercedes mechanic said it was not normal but he too could not find the answer to the problem. I am "desperate" to find the answer as it is beginning to appear more and more in the steering of the car. Thanks in advance Lori
#17 of 17 dwheatley by dwheatley Jul 17, 2009 (3:02 am)
I'm considering buying a Lexus 400h. I travel away from home for 4-5 week periods and have found with my current car (BMW 735i) that if I'm away for such periods of time the battery goes flat. I deal with this by disconnecting the battery and this is not a problem.   I'm concerned that with such a heavy dependance on batteries this might be a major issue with the Lexus hybrid.   Any thoughts?   How easy is it to disconnect the battery on the Lexus 400h?

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