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2020 Honda Passport Touring AWD Metallic Steel
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Hi has anyone added the oem 9spd trans cooler to their vehicles? How difficult was it to do?
Here's a link to the installation instructions.
Maybe that will help you determine if it's something you'd want to attempt.
https://www.collegehillshonda.com/instructions/pilot/2021/5ezcooler.pdf
Keep in mind, those are the install instructions. The 9 speed is a different beast of a transmission over the older 5 & 6 speed transmissions. With either of them the top off/fill procedure was pretty straight forward. Pull the ATF dipstick, check how far it was down and fill to the filled level line.

The 9 speed has no dipstick. The fill procedure is complicated and is not part of the install instructions. The in vehicle ATF fluid has to be raised to a certain temperature range before topping off the transmission.

That is why when I got the auxiliary ATF cooler for my 2020 Passport Touring, I had it dealer installed. I have no desire to screw up a transmission by not having the proper tools for this particular job.
 

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I'll be attempting on sunday. Saw a couple youtube videos. It doesnt look too hard. I just cant find how much additional fluid needs added. Wish me luck. Got a 4 liter bottle of pentosin atf9 for 65 bucks off rock auto.
 

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I'll be attempting on sunday. Saw a couple youtube videos. It doesnt look too hard. I just cant find how much additional fluid needs added. Wish me luck. Got a 4 liter bottle of pentosin atf9 for 65 bucks off rock auto.

Please take lots of photos.

Would love to see the process.

Thank you!
 

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In before OP posts: "installed transmission cooler and now my car is in limp mode".

Just make sure you are comfortable with the top off procedure, sounds awful.
 

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2020 Honda Passport Touring AWD Metallic Steel
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In before OP posts: "installed transmission cooler and now my car is in limp mode".

Just make sure you are comfortable with the top off procedure, sounds awful.
You mean this procedure???


FYI: If you hear a noise from the transmission after you install the auxiliary ATF cooler, it probably means you didn't get the fill right. Several months ago there were people reporting here, on the Passport as well as the Ridgeline form about hearing a noise after the ATF cooler install. Asked a couple of mechanics about the report and both indicated that the noise comes from an improperly filled transmission. One was a Honda Specialist who does the ATF installs at the dealer. The other was an independent mechanic who also does the ATF installs for the Honda 9 speed at their shop.
 

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Thanks everyone it looks like this will be a dealer install for the cooler
If your handy with tools, like a challenge, maybe 1 or 2 bottles of your favorite "You can do it" beverage. It's pretty straight forward. The more parts you remove to get things out of the way to do the job more efficiently, the better.
😁👍
 

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2020 Honda Passport Touring AWD Metallic Steel
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Yeah I’m putting that on hold I don’t think the Pilot can handle my needs may have to go back into a truck
Well, unless you live near or above the arctic circle, then the auxiliary ATF cooler might still want to be a consideration for the longevity of the transmission. I put on on my 2020 Passport even though I do not have a hitch installed. You want the tranny temp to get above 150 F, but keep in around the 170 F -190 F range. Ideally 170 F is the optimum for the longevity of the fluid, which means longevity of the transmission.

The way I look at it, ever if you don't use the Pilot to tow, it can't hurt.
 
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