Its a sealed transmission. Adding more is a bad idea. Did you watch the procedure?
How to change your Toyota Sealed Transmission Fluid - YouTube

 

Its a sealed transmission. Adding more is a bad idea. Did you watch the procedure?
How to change your Toyota Sealed Transmission Fluid - YouTube

I followed this procedure for my 2019 Camry and worked out well. I have a scan tool that measures transmission fluid temperature but he gives you alternate ways to do this without a scan tool.

No bypass valve on my 2019 Camry 4 cylinder.

 

It’s transgender. :-/

 

When its 'filled' properly, the excess is only a small dribble not a stream.

 

HA!

 

Was your car level or was the front end jacked up when draining it out, and when checking the level after refilling?

 

I leveled the car on jack stands . Also should I bypass the transmission cooler. It has an 8 speed.

 

What do you mean by "bypass the transmission cooler"?

 

I watched the video posted above. It said that you have to push the pin on the cooler bypass for the 8 speed transmissions. It’s at the 14:40 mark.

 

Thanks for the reply's. I ended about 8 oz short originally. It's filled to specs now.

 

What mileage intervals? 30, 50 or 60K?

 

Here's what the fluid looks like on a 2018 Camry 4 cylinder after 5 years and 48,824 miles. Darkened, but not yet brown or burned.

 

If the transmission overheats and the fluid goes into the tube, can it ever make it back out into the pan?

 

If you talking about plastic tube, which is used to adjust ATF level, then that tube is always full of ATF.

 

Watch the video in post 2.

 

Is it recommended to do another drain and fill a few week after the first to get more of the dirty fluid out or is once enough?

 

I did the fluid change today on my 2022 SE AWD at 55k miles. I ran into a couple issues.

First, when I drained the fluid, I was surprised to get only 68 ounces out. I measured carefully with a paint mixing cup, so it was pretty accurate. Oh well, so it is. According to the instructions, I put in more than I took out, so basically as much as I could easily get out of 3 quart bottles with the pump, minus a little spillage, so probably 2-2/3 quarts, or 85 ounces

Secondly, the pin location 13 in the OBDII port did not have a pin in it, so there was no way to do the maintenance mode temperature measurement. I ended up using a temp gun. Actually, I have two and they were within half a degree so that's good.

After reaching temperature, I pulled the plug, and nothing came out. I shut the car off, added most of another quart, and ran the car up to temp again. It lost about 5 degrees in the process, probably a good part of that was just temperature stabilization with internal parts, so all good. I pulled the plug and fluid came out as expected. It did seem like it was a fair amount, but I didn't measure it.

Based on other folks adding more than my initial add I have concluded that most likely the car has been around a quart low from the factory. I already questioned the necessity of the extensive procedure to set level, and this strengthens my doubts. As for the pin #13 being missing, my only guess is that either it's a Covid car and they missed it, or maybe it is only used for DIY functions, and they decided they could leave it out on purpose. Either way, that's a couple of negative points for Toyota quality in my eyes.

 

As for the pin #13 being missing, my only guess is that either it's a Covid car and they missed it, or maybe it is only used for DIY functions, and they decided they could leave it out on purpose. Either way, that's a couple of negative points for Toyota quality in my eyes.

Toyota changed the procedure for 2020 and up. You don't need a jumper anymore to enter fluid temperature detection mode and engine idle speed control mode:

Depress and hold the brake pedal.
c. Start the engine.
NOTE: To reduce load, make sure that all electrical systems, such as the air conditioning, lighting system, electric fan and audio system, are off.
d. Slowly move the shift lever from P to D, then back to P.
HINT:
a. Slowly move the shift lever to circulate the automatic transaxle fluid through each part of the automatic transaxle assembly.
b. Keep the shift lever in each position for approximately 3 seconds.
e. While observing the D shift indicator on the combination meter, move the shift lever back and forth
between N and D at an interval of less than 1.5 seconds for 12 seconds or more.
NOTE: Do not pause for more than 1.5 seconds.

 

Well you could do the temp measurement via the odb2 using the ECU on an app like say Torque Pro (only for android though). Torque Pro (OBD 2 & Car) - Apps on Google Play


I have heard of other makes also coming low on trans fluid from the factory and they work that way for years before anyone notices.

 

Well you could do the temp measurement via the odb2 using the ECU on an app like say Torque Pro (only for android though). Torque Pro (OBD 2 & Car) - Apps on Google Play


I have heard of other makes also coming low on trans fluid from the factory and they work that way for years before anyone notices.

I've used Torque in the past, but am on iPhone now. I guess I could load it on a tablet. I didn't know Torque would display the trans temp though. Good info.