Last post on Jun 24, 2013 at 1:51 PM
You are in the Lexus RX 300/330/350
What is this discussion about?
Lexus RX 300, SUV
#9271 of 9498 Re: Heater Failure [avery1]
Dec 25, 2008 (1:52 pm)
This is a common RX problem, It's one of the air mix servos not working. If you remove the glove box by opening the door and removing the 2 phillips screws and the 2 lower 10mm bolts, you can then view the operation of the air mix servos.
You can then remove the white exit vent tube and see the trap door open and close as you adjsut temp control.
There is a door which is almost up against the heater coil and as you will see, this door open and close to compensate for max or min heat levels.
#9272 of 9498 Favorite Lexus Parts Sources
Dec 28, 2008 (11:26 pm)
DIY'ers... I'm curious who your favorite parts sources for Lexus parts...
My next two projects:
1. Replace weak RR door lock solenoid.
2. Replace struts.
If you have a link, that would be great.
#9273 of 9498 RX300 Suspension and Strut/Shock Upgrades
Dec 28, 2008 (11:38 pm)
My biggest complaint with the '99 RX is the swaying, benign, and otherwise blah handling. Although this car was not marketed as anything close to fun-to-drive, the chassis is so much more capable than the tippiness Lexus built into it.
I'm curious if anyone has found any suspension upgrades (other than tires) or found aftermarket struts (like KYB or TRD) made a significant difference. What fits? Please, please, please.
I'm thinking it's finally time for new struts. But I'd love to find upgraded sway bar links to replace the unusually frail, long stock links.
#9274 of 9498 Re: Favorite Lexus Parts Sources [la4mead]
Dec 29, 2008 (5:44 am)
Irontoad.com and newlexusparts.com are Lexus dealers that discount over the internet using these site names. I have purchased from both. Rockauto.com has great prices for aftermarket parts.
For the door lock solenoid, others have used a generic one from ebay for about $10. They piggyback it on to the existing one, leaving it in place. They then use a wire tap to connect to the one wire necessary necessary to operate the solenoid. The original one in your RX has many wires attached to it as it performs various functions. That's why it must be left in place or replaced with another of the same. The solenoid from Lexus is about $300. and others have complained about the replacement failing again in a few years.
#9275 of 9498 Re: Heater Failure [mikey00]
Dec 29, 2008 (9:20 am)
Thanks mikey00. You are a great contributor to these forums. I was dreading bringing the car in since I was told by one tech that it would cost hundreds of dollars because they would have to take the dash out.
#9276 of 9498 Re: Favorite Lexus Parts Sources [mikey00]
Dec 30, 2008 (9:35 am)
Thanks Mikey, these are great suggestions that I hope benefit others, too.
I've purchased parts from various online Ford dealers and have been pleased with the service and deep discounts. I will have to try this with newlexusparts.com and irontoad.com and I'll search for others. With Ford parts you can look online and many times find a copy of fiche or drawings to match up parts. I don't remember if that's so with Lexus parts. Also, I've needed very few Lexus parts in advance compared to the Fords.
Your suggestion to use a generic door lock solenoid is really top notch. I had narrowmindedly assumed I needed to remove the old one and replace with the factory part, but was disappointed to find it's sold only as a whole expensive latch assembly. It was not too hard, but it was an awkward process. A generic might be the best trick so rather than do it myself this time. I will try going to an alarm installer and ask them to disable the factory solenoid and install a generic one to provide the same function. That will preserve the factory security, as long as it latches and unlatches positively.
Yeah, it's common lock solenoids go bad. Too bad they aren't sold separately by Lexus. I had the driver's and one of the rear doors go bad, covered under warrantee. And out of warrantee I had to replace the driver's latch/lock/solenoid combo myself, a PITA. The rear door has been getting lazy as my car sits a lot between uses for road trips. I'm now driving it less than 3000 m/yr, but not short trips. A couple years ago, I took it out and vacumed and cleaned it, put in some spray lube, and it worked fine till a few months ago.
I'll look at Lexus Owners club, etc. and see what others have to share about using a generic solenoid.
Thanks again for the very useful info.
Happy New Year everyone.
#9277 of 9498 Re: RX 300 Owners Forum - Part IV [la4mead]
Jan 04, 2009 (6:27 am)
Thank you for the information. I hope I can come across one that has had the transmission replaced. If not, I guess I start looking at the LS400. I truly appreciate your input.
Happy New Year
#9278 of 9498 Transmission probelms
Jan 07, 2009 (12:48 am)
Hi all, I've just got RX300, 2000 FWD. I see alot of complaints about its transmission failure I wonder if the problem happen to AWD only or both AWD & FWD?
Is there any suggestion for the caring?
Thank you in advance for the the reply,
Ps: my email is rathahuotyahoo.com
#9279 of 9498 Re: Transmission probelms [Ratha]
Jan 07, 2009 (9:34 am)
A general indicator of wear is the color of fluid between changes. Preventive maintainence in addition to Lexus recommended service might help extend the life, especially if your use involves short trips, stop & go traffic, and/or extended idling or there isn't already too much damage. I have a friend who has over 200,000 miles on an AWD without problems, and the fluid in that car stays pink. My 2WD's original transmission had shift problems and would show wear in the fluid by turning it burned and brownish right away. The factory replacement transmission doesn't show that kind of wear in the fluid, and there are no shift problems.
Service specific to the transmission includes transmission fluid and filter change by dropping the pan (rather than "flush") and inspection of the old filter and sediment in the pan. If not at a Toyota/Lexus dealer, let them know you want refill with the proper type IV fluid (not generic Dextron/Mercron like most shops stock, they may need to order it ahead with the filter kit).
For more ideas, search the RX300 Transmission thread of this discussion. For example link title
And report back to share your experience, good or bad. Most people don't post positive comments, instead most of what you see posted are complaints.
Good luck with yours.
#9280 of 9498 Re: Transmission probelms [la4mead]
Jan 07, 2009 (5:46 pm)
Thank you la4mead, I appreciate your reply. All the best.