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Clicking Noise While Driving Lexus RX300

13 messages,  Last post on Mar 01, 2009 at 11:23 AM

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What is this discussion about? Lexus RX 300, Lexus RX 330, Lexus RX 350, SUV

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#6 of 13 clicking noise on the RX300 by turbulence Sep 18, 2008 (9:52 pm)
Hi,   I hope to help. On long trips we encountered clicking noise like a rattle or "rapid tapping following irregular patterns,road conditions, We drove down I-5 my sweetheart got up and looked around her car and pushed panels in and such, it was located in the rear area by the cargo area. I remembered the Licence plate frame rattles because lexus and toyotas bolt on only at the Top of the frame. close the trunk and listen to the "RRAAPP" sound. Case Closed. I am reluctant to drill two holes for the lower licence plate frame, but may opt to attach a couple of rubber bits to quiet it down. Cheers!
#7 of 13 Re: Clicking Noise [avery1] by mrtrx Oct 27, 2008 (9:15 pm)
Replying to: avery1 (Aug 10, 2008 7:28 am) I had a similar annoying noise with the root cause being found in the air-mix servo. This servo motor box is one of three I believe and is located on the passenger side of the climate control system and accessed by removing the glove compartment (4 screws) and the panel down just above the floor. The servo in question is located behind a couple of heater tubes and you need a stubby phillips screwdriver to remove it. Disconnect the wiring plug. The servo has a damper actuator on one side. Hold with the actuator down and pry open the case. Don't fret if the snaps break because the unit is held together with screws anyway. Clean the contacts inside the box and re-lube the gears and contact plate with silicone grease. Reassemble and reinstall (kind of a pain). Works fine now in my auto (all is quiet again!) and saves hundreds of bucks vs. a visit to Lexus service. Shield the servo from heater tube heat with some aluminum reflective duct sealing tape. I think the heat breaks the lube down and caused the servo voltage to become errant, causing the servo to "hunt" and generate annoying noise. Good Luck. Replies to this message: avery1 (Oct 27, 2008 10:27 pm) Andrewcv (Jan 16, 2009 11:35 am)
#8 of 13 Re: Clicking Noise [mrtrx] by avery1 Oct 27, 2008 (10:27 pm)
Replying to: mrtrx (Oct 27, 2008 9:15 pm) Thanks.
#9 of 13 Knocking Sound From Front & Rear Wheel Areas by bleighton Oct 28, 2008 (7:49 am)
I have a 2004 Lexus RX 330 that has 100,000+ miles. Just recently, a knocking noise comes from the front & rear wheel/suspension as the wheels go up or down an elevated driveway curb. It will do the same thing on the open road but only when the road is uneven. Do you have any idea what is causing it? I assume it might be a costly repair so do you think I can ignore it if it is not annoying? Replies to this message: avery1 (Oct 28, 2008 8:11 am)
#10 of 13 Re: Knocking Sound From Front & Rear Wheel Areas [bleighton] by avery1 Oct 28, 2008 (8:11 am)
Replying to: bleighton (Oct 28, 2008 7:49 am) I had this kind of noise when I first go my '99. It was a front strut. It was replaced under warranty. It was difficult to get it addressed because it only happened when the car was cold for some reason. Had to leave it with a tech overnight so he could hear it in the morning.
#11 of 13 Re: Clicking Noise [mrtrx] by Andrewcv Jan 16, 2009 (11:35 am)
Replying to: mrtrx (Oct 27, 2008 9:15 pm) You are the MAN!! I KNOW that is what is causing the clicking. I thought it was in front of the driver but it could be on the left. It only happens when I turned the car off in cool weather and start it in hot weather. It's definitely the climate control system. I'll go servo hunting and check it out! Thanks a tonne for the info.
#12 of 13 Re: Clicking Noise [dvarner] by slexusrx330 Mar 01, 2009 (2:57 am)
Replying to: dvarner (Aug 08, 2008 6:12 pm) I have a 2004 RX330 as well and have the same clicking noise. It is intermittent and seems to be coming from the steering wheel area. I can't figure out what is causing it. I turn on and off the AC, play with the blinkers, steering wheel adjuster and everything else within the area and nothing seems to stop it. Have you had any success in getting it fixed? Replies to this message: wwest (Mar 01, 2009 11:23 am)
#13 of 13 Re: Clicking Noise [slexusrx330] by wwest Mar 01, 2009 (11:23 am)
Replying to: slexusrx330 (Mar 01, 2009 2:57 am) Turn the temperature setting to MAX COOL, "park" the airflow, air distribution system in full defrost/defog/demist position, and then turn the system off and see if the clicking doesn't go away

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