2008RX400h

Be advised, I had a private communication with another RX400h owner who told me he bought a third-party fan assy (for some other vehicle) and was able to unbolt/remove the motors from that assy and install them w/o modification into the RX400h assy.

I spent about $400 for the Toyota OEM motors, he spent around $200 (or less), as I remember. I'll try to drum-up the info on this and make sure it gets posted.

I personally question the quality of the third-party motors, but perhaps they're appropriate in certain situations.

Besides the RX400h, I have a 2005 RX330. It uses two different motors on its fans, and from what I can see neither motor can be used on an RX400h. Too, the electrical connections differ on the two vehicles so using one assy to replace the other isn't simply "plug and play". Indeed, the assemblies may have slightly different dimensions and not be cross-compatible.

2008RX400h

I'm following up on my post from just prior.

Reportedly the MOTORs from the TYC replacement fan assy for the 2008-2010 Highlander (p/n 622020, https://www.rockauto.com/en/partsearch/?partnum=622020 $129.00 + S&H) can be used to replace the motors on the RX400h fan assy. While the MOTORs are interchangeable (same physical dimensions and electric connectors, I'm told) the TYC fans and the TYC fan shroud are not. So one'll have to remove the motors from the TYC assy and use them to replace those on the RX400h.

I'm not aware that anyone's compared the TYC motors' current draw / rotational speed to OEM; they may or may not be up to standard in these or other ways.

This information was given to me by fellow clublexus member dpleticha (see his follow-up, below). He and I had a private discussion in which he described his investigation and discovery.

If the fans or shroud on the RX400h are in pour condition, the Lexus part numbers are, to my knowledge, provided below (along with the p/ns for the motors):

Motor 1636320400 (qty 2)
Fan shroud 1671120171
Fan 1 1636120230 (5-blade)
Fan 2 1636120220 (7-blade)

The TYC motors/assy are notably less expensive than the OEM motors. In a northern climate, where the motors see less use, the TYC solution may be quite adequate, e.g., in terms of longevity. Regardless, it's each owner's choice. I can't imagine what the dealer would charge to replace these...

For the record, the attached picture is to my knowledge a picture of the OEM RX400h fan assembly. I see it's got some sort of watermark so I hope it isn't discarded.


RX400h fan assembly

dpleticha

... and so far so good. However it’s starting to get hotter now so I’ll let the forum know if it becomes an issue as time goes on.

LEDeve

Thanks for the replies! Your information is really appreciated. If I end up going this route, I'll follow up and probably make a YouTube video (1empyre) covering it. It's unfortunate that hybrid owners pay 2-4x or more for a basically ubiquitous part/assembly of the 330/350. I'm brand new to this forum and very impressed already.

Rhinojogge

Hi,
I just had an issue with my drivers side fan motor making a noise when the A/C is turned on. On closer inspection, I noticed that the fan would wobble, not all of the time, but sometimes. I pulled the fan shroud out. Took the fan and motor off of the shroud. I was afraid that the fan blade itself had developed wear and play in it. I tried to move the motor shaft to check for play in the shaft to see if the bearings were wearing, but felt no movement in the shaft in the front of the motor. I was suspicious, so I removed the back of the motor. It has a sleeve bearing in the back and that bearing has a tremendous amount of wear and play in it that I could not detect from the front motor shaft. So, I found and ordered a motor on Amazon. The part number was slightly different from the stock part number, but the motor and connector looked identical. I got it and installed it yesterday and it works perfectly. The part number on the motor that I removed was 16363-20400, but the number on the part I bought was 16363-20390. I think the price for this motor was about $56 and free shipping? I had seen some fans selling for about $200-$400. Hope this helps folks looking for a motor. Also I think all of the play in the worn out bearing was causing the 4 motor brushes to wear badly causing alot of black dust n crud to be in the motor...

KOAUTO Electric Cooling Fan Motor Left 16363-20390 for Lexus RX35 RX400H RX450h

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Rhinojogge

I last thing
I did see that both the drivers side fan motor and the passenger side fan motor had the same part number, so they are both the same motor

2008RX400h

On Amazon, regarding the above post, they mention RX35... perhaps they mean "RX350"? The 2nd-gen RX350 does not use this motor, so perhaps some later generations' RX350 and RX450h do.

What I do know, for the 2nd-gen RXs:

For the RX400h in 2008, both fan's motors are the same, p/n 1636320400; these are also used on the Highlander Hybrid and can be bought from Toyota using the same p/n. It appears this same motor is also used on some later generation RXs, perhaps lurking under p/n 1636320390 (see Rhinojogge's posts above).

For the RX330 in 2005, two different motors are used, 1636320270 and 1636320280.

For the RX350 in 2007, two different motors are used,1636320270 and 163630P100.

hfahmy

I know this is an old post but would be great if you provide a link to the fan shroud you bought from Amazon?

Anyone tried this?
I am having the same problem now with AC not cooling when in traffic

2008RX400h

Take a look on RockAuto for your year vehicle and see what they offer, then look for the same mfgrs / part numbers on Amazon. That should give you a start.

E.G., I just looked on RockAuto for fan assemblies for a 2005 RX330 and there were a number of them shown at various prices ranging from around $88 to $128 (from memory).

My $0.02: You get what you pay for.

If you want fan OEM motors, you can get them at a good price from Lexus of Orland (https://parts.lexusoforland.com/) and, as of this writing anyway, you get "complimentary ground shipping up to $100", which means if the shipping for the parts is $100 or less, your shipping is free, and if the shipping is more than $100 (say $120), you only pay the difference ($120-100 = $20). I buy OEM parts from them often.

Another place to try is Lexus of Akron (https://www.lexusoeparts.com/), their pricing is competitive with Lexus of Orland.