Coolant Replacement FKS
 

Wondering if anyone has done the coolant change on the 2GR - FKS.
Car Care Nut did a video on the old engine and said that the newer FKS is much more difficult....I assume that the bleeder is gone or more difficult to access.

Could not find a thread here or any videos on YouTube.

The official Toyota procedure exists, not that it is a simple one:

https://www.ttguide.net/coolant-712.html

According to Gen3 Tacoma owners (Taco 2016-present has same engine), there is no bleeder valve. Also, schematics show a drain valve for each cylinder bank but they have only found the one on the passenger side.
Also found a youtube video for 2019 Camry fluid service, but done on a hybrid; the mechanic mentions non-hybrid models.
https://www.tacomaworld.com/threads/...oolant.624165/

The diagram shows a significantly different radiator from the Gen 4 RX. However, I assume the basic procedure and list of things to drain is still correct for an RX.

Thanks for the post. Don't need to do this right away, so I have some time. Someone will eventually post a video....maybe me if the time comes.

On my old Acura it was drain and fill with no spill funnel kit. I will poke around a bit more to find more info. Forgot to look on forums of other vehicles with same engine.

I've done just a drain a fill of the radiator at around 100k miles. Coolant looked pretty good, so didn't drain the block. It's pretty straightforward to drain the radiator and the no-spill funnel kit was good but the way the radiator cap is situated can make it tip over, so keep an eye on it.

Here's an interesting item -- apparently the Toyota Avalon also uses the 2GR FKS engine. Upon searching for the coolant drain procedure for that model, I found this site:

https://www.tavalon.net/138/2gr_fks_coolant.html

Here's the interesting part -- this diagram shows the engine block drain plug in a different (and much more logical) location than the Tacoma diagram (which appears to show it on left cylinder head!).

Yeah, although the engine is the same, it seems that the procedure for the RX is more complex for the full coolant replacement. When I did my TIS 2 day subscription, I forgot to grab the coolant procedure. I may pop back on when the time to replace get near. I asked Viktor to add this to his list of video projects when he can find the time.

Bleed burp radiator
 

Planning to change coolant and does anyone know the location of the bleeder valve or is this model self burping?

I asked this the other day in some thread with no information. Apparently the bleeder has moved to an inconvenient location. I think that the Car Care Nut posted a video and mentioned that the latest version of our engine makes a full coolant bleed more difficult.

I put out a request to Viktor to do a video on the topic and he said that he will add it to his list.....his videos are great, but I am sure that he is a busy guy.

I might at some point log into TIS with a 2 day subscription to download a few files that I neglected to grab when I first purchased by vehicle in 2020.

If you find out any information, please post and let us know.

https://www.clublexus.com/forums/rx-...ement-fks.html

I knew that there was a post....just forgot that I was the one who started it.

Thanks for all the info….is there a consensus on whether a bleeder valve exists?

not that I could find. I think that there is, just not sure where. No one else has confirmed for this engine in OUR VEHICLE.

As I said, the 2 day subscription to TIS is in my opinion worth the price since you can download almost every common service file with procedures, parts, specs, etc. I can not promise that the full coolant procedure is in there, but I can't image why it would not be.

Turns out that I have the TIS document for the procedure.
It appears that there is a Cylinder Block Drain Cock Plug on the driver side of the engine in a similar position as posted in the link from dibl in post 2.

I have not looked but I am guessing that the location is a pain to reach.

The procedure requires several squeezes of the number 1 and number 2 hoses.
As mentioned previously The Car Care Nut does this on the old version of the RX engine and then mentions that it is not as easy on the FKS.

I still have some time and hope to find a specific video for our vehicle.

Keep us posted if you are planning to do yours.

Drain and refill and bleed IMO is already good enough. No need to remove the block drain.