Last post on May 26, 2013 at 11:55 AM
You are in the Lexus RX 300/330/350
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Lexus RX 300, Lexus RX 330, Lexus RX 350, Auto Repair, SUV
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#321 of 457 Re: 2010 RX Vs 09/08/07 CPO [vollyf]
Mar 24, 2010 (7:03 pm)
Let me start by saying they have all been very quiet. I was most impressed with the quitness of the 1999 rx 300. I think because it was my first Lexus. I had the 2000 rx 300, 2003 rx 300, and 2005 rx 330 all of which were quiet.. The 2008 and 2010 rx 350's with the 3.5 liter engine is a bit noisier at cold start up. Hope this helps.
#322 of 457 Re: 2010 RX Vs 09/08/07 CPO [marqevans]
Mar 24, 2010 (7:14 pm)
From your reply I assume, I do not get anything great by going for 2010....
So CPO is the way to go. Unless any one can tell me about the greatest/latest in 2010.
#323 of 457 Re: 2010 RX Vs 09/08/07 CPO [vollyf]
Mar 25, 2010 (4:05 pm)
There is a significant difference in acceleration with the rx 350 versus the rx 330. I like my 2010 because I now have bluetooth and a USB port for the IPOD. I have never purchased the built in navigation. The storage in the cargo area is larger because the wheel wells no longer intrude. The rear seats f newold down with the flip of a lever from cargo area, There is a lot more electronic customization you can do your self through a menu switch on the steering wheel. The suspension seems firmer in the 2010.
As far as buying certified used versus new, I am not so sure the price difference is big enough not to buy new. My list price was $44,000 the discounted amount used for my lease was $39,800. My 2008 turned in after driving almost three years was put on the lot certified for $32,800 with 34,000 miles on it. Bottom line I think it is a push weather you buy certified or new.
#324 of 457 Re: 2010 RX Vs 09/08/07 CPO [vollyf]
Mar 28, 2010 (3:05 pm)
Wheels no larger than 17" and summer ONLY tires.
My '01 F/awd RX300 runs on summer only bridgestone Turanzas THROUGHOUT the year. Tire chains when/if needed, rear ones first and then I add the fronts if things get extreme.
Provided they adopt DFI my next SUV purchase is very likely to be the new body style 2012 Mercury Mariner hybrid with F/awd
#325 of 457 Radio goes off as soon as you press the ignition off button
Apr 04, 2010 (5:57 pm)
On the other 5 RX's I've leased the radio stayed on until I opened the drivers door. On the 2010 the radio shuts off as soon as you push the ignition off. Is there a custom setting the dealer can do to change this? As it is now you have to shift to neutral before shutting off the car to have power to the radio continue.
#326 of 457 Radio-itis with push-button start
Apr 04, 2010 (6:34 pm)
It must be the way the push-button start system is designed. Same thing happens with our TCH. If you want to sit in the car and listen to the radio, you have to push the button in again and go to accessory mode. PIA!
#327 of 457 2010 RX Unusual Drive Train Noise
Apr 05, 2010 (4:21 pm)
Has anyone experienced an unusually loud noise coming from the drive train of their 2010 AWD RX350? Ours is 1 year old, with less than 12k miles. At all speeds above 35 mph there is a noise that might be described as a low pitched whine or a hum. It seems to come from the center or rear of the vehicle. It sounds a little bit like the tire noise from aggressive snow tires, but I am certain it is not tire noise. I can hear the tire noise at a much lower volume, and at a higher pitch. (The car has stock Michelin Latitude Tour HP tires.)
We previously had a 2001 RX300 AWD and never experienced any thing like this. I have read reviews and comments about how quiet the 2010 RX is, so I must believe this is something unusual. On the last service visit, the service department said there was nothing unusual going on. It's going back to the shop next week, and I want them to check it again. Something needs to be done. My wife doesn't like to drive the car now, and passengers ask "what's wrong with your Lexus" when they ride in it.
Has anyone had a similar experience, or any ideas. Could this be noise from the transfer case or differential?
#328 of 457 Re: 2010 RX Unusual Drive Train Noise [car2une]
Apr 05, 2010 (5:31 pm)
The F/awd system in the new 2010 RX350 (also the new venza, and the 2011 Sienna) is entire different from the totally useless F/awd system in you (and my) 2001 RX300. The new F/awd system is a virtual clone, knockoff, of the Ford escape, Mercury Mariner, Mazda Tribute, and Mazda CX-7.
The CX-7 seems to be the only one of these not having poor relaibility of the PTO, Power Take Off, system. The CX-7 uses liquid cooling, engine coolant, to handle the heat load of the PTO when the rear drive is engaged.
I would suggest finding the fuse for the rear drive clutch and removing it to see if the noise doesn't abate. With the fuse removed you will not have engine torque to the rear wheels but this time of year that may not much matter.
Having a solid level of drive to the rear simultaneously with the front will put a serious torque loading on the PTO in certain conditions. The RX350 only engages the rear drive clutch under three circumstances.
A.) During acceleration in order to divert, apportion, some of the high engine torque across all four wheels thus preventing loss of traction, and thereby lowering the potential for an accident arising from loss of directional control. Really lowers the number of times of TC activation.
B.) During an accelerating turn. Since the PTO stress can become extreme in a tight accelerating turn the level of torque coupled to the rear will be moderated, LOWERED, via PWM, duty-cycle, modulation. The tighter the turn or the harder the level of acceleration the lower the coupling coefficient to the rear drive will become.
C.) If wheelspin/slip develops due to the elvel of engine torque being applied. All teh literature available indicates that wheelspin/slip is likely to only occur on teh front wheels and as a result while the rear drive will be instantly and fully engaged TC will also activate. With TC activation the engine will be DETHROTTLED, forced down to a virtual idle, while at the same time the brakes will be applied to the slipping wheel(s).
The literature indicates that while the RX will have the ability to manually engage the F/awd system, close the rear drive clutch system, as long as roadspeed remains below 20mph, neither the Venza nor the Sienna will have that capability.
The early Ford Escapes, Mariners, etc, had such a feature, manually engage the rear drive clutch but was removed from newer models, I suspect once the high PTO failure rate was "discovered".
I'm not sure I would buy a new RX350 F/awd absent knowing the PTO cooling is used and I might well modify the system such that it DID NOT engage the rear drive system EXCEPT at my behest, use of the switch to manually engage teh rear drive.
If it does have the PTO cooling, or such is adopted in future years, I might considered purchasing a new RX350. But I would immediately set to work converting it to FULL TIME RWD with PART-TIME R/awd(4WD) capability. Drop a front halfshaft and apply 12 volts to the rear clutch, result...RWD. Reconnect the front half-shaft and have a PART-TIME 4WD.
Drop the front half-shaft and the 12 volt source, result...TOAD.
#329 of 457 '10 RX350 FWD drivetran still load
Apr 12, 2010 (4:44 pm)
We bought the Canadian build '10 RX350 with FWD just recently. When compared to the RX330, RX350, this new '10 model's transmission is very load. Louder than any other car we had.
During acceleration, it gets very noisy. ;-( I would shift the car into neutral while cruising, and rev the engine a few times to see if the noise is coming from the engine. The 3.5 v6 engine is whisper quiet after it is warmed up, but not so for the transmission. This is even the FWD version!!!
#330 of 457 Re: '10 RX350 FWD drivetran still load [aresroc]
Apr 12, 2010 (7:08 pm)
I have a 2010 RX350 with FWD purchased in late December that has about 2,500 miles on it and the transmission is not loud at all when new or currently. It performs the same as the 2007 RX350 I had. Have you discussed the loud transmission issue with the dealer you purchased from?