Transmission Fluid
Instructor
Joined: Sep 2021
Posts: 1,144
Likes: 602
From: VA
Engine must be on! Also don't forget to move shifter thru ranges couple of times while holding brakes. Stop engine only after adjusting fluid and closing plugs.
You have severe underfill (liquid drains to pan when off).
You have severe underfill (liquid drains to pan when off).
Lexus Champion
Joined: Oct 2019
Posts: 17,910
Likes: 1,702
From: Ohio
Hey, just for my own mental sanity. When doing the transmission fluid re-leveling is the engine supposed to be on or off?
I did: plug holes, add fluid, start engine and warm to 35-42C, then I stopped the engine, and opened the drain plug, now getting shifting issues like it's underfilled? Someone at work said the engine should be running for the system to have pressure, else with it off the system/torque converter drains. I probably have it underfilled?
I did: plug holes, add fluid, start engine and warm to 35-42C, then I stopped the engine, and opened the drain plug, now getting shifting issues like it's underfilled? Someone at work said the engine should be running for the system to have pressure, else with it off the system/torque converter drains. I probably have it underfilled?
The process is extremely simple yet somehow everyone always messes it up or thinks that is complex. Once again I'll write it out....
Put pan and filter back
Fill pan as far as you can with engine OFF
Connect scan tool
Key on engine off
Find trans temp value in data stream
Turn engine on
As fast as possible fill till overflow
Cycle through all gears, wait 15 sec each
Fill again
Rev to 2000 for 20 seconds
Fill again
Wait for temp to hit 104* (check this, I'm writing from memory and it might be different)
When temp hits spec make sure overflow is just a slight stream
Close all plugs
Shut down engine
Key on engine off
Clear TCM memory
Command relearn state
Key off
Start engine
Go drive
Do 5 0-70 nice and slow accelerations
Do 5 70-20 coasts
Do 2 0-130 full hammer runs
Pit Crew
Joined: Apr 2023
Posts: 198
Likes: 47
From: NE
Toyota/Lexus uses a machine to exchange the fluid. Just take it in and don't worry about it. Do it every 50-75k miles and you'll be fine.
Like others have said. You can change it yourself. But if you screw up it's on you and I personally don't want to take the chance when the cost is low to have Toyota do it for me.
Whatever you do don't do a 0-130. That's a great way to wind up in County and possibly lose your car/license.
Like others have said. You can change it yourself. But if you screw up it's on you and I personally don't want to take the chance when the cost is low to have Toyota do it for me.
Whatever you do don't do a 0-130. That's a great way to wind up in County and possibly lose your car/license.
Lexus Champion
Joined: Oct 2019
Posts: 17,910
Likes: 1,702
From: Ohio
Toyota/Lexus uses a machine to exchange the fluid. Just take it in and don't worry about it. Do it every 50-75k miles and you'll be fine.
Like others have said. You can change it yourself. But if you screw up it's on you and I personally don't want to take the chance when the cost is low to have Toyota do it for me.
Whatever you do don't do a 0-130. That's a great way to wind up in County and possibly lose your car/license.
Like others have said. You can change it yourself. But if you screw up it's on you and I personally don't want to take the chance when the cost is low to have Toyota do it for me.
Whatever you do don't do a 0-130. That's a great way to wind up in County and possibly lose your car/license.
Pit Crew
Joined: Apr 2023
Posts: 198
Likes: 47
From: NE
Lexus Champion
Joined: Oct 2019
Posts: 17,910
Likes: 1,702
From: Ohio
I've just seen dozens of customer cars that have trans service in their history and the factory pan seal and filter is still there. A fluid change at a dealer doesn't include the filter unless you pay extra for it and many do not even want to touch transmissions at all.
Lexus Champion
Joined: Oct 2019
Posts: 17,910
Likes: 1,702
From: Ohio
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