How to replace auto tranny fluid

[CTScott]

Originally Posted by LA Yaris

My 09 Yaris Sedan auto tranny has no dipstick. Also says in the book No fluid change as it is good for the life of the car. Even the Dealer says the same.

You might want to take a closer look. The automatic has a dipstick. As for the changing interval - This seems to get discussed at least weekly here.

AUTOMATIC TRANSAXLE

Fluid capacity (drain and refill), L (qt.,
Imp. qt.): 2.5 (2.6, 2.2)

Fluid type:
Toyota Genuine ATF Type WS

Change automatic transmission fluid only
as necessary.

Generally, it is necessary to change
automatic transmission fluid only if your
vehicle is driven under one of the Special
Operating Conditions listed in your
“Scheduled Maintenance Guide” or
“Owner’s Manual Supplement”. When
changing the automatic transmission fluid,
use only “Toyota Genuine ATF Type WS”
(ATF JWS3324 or NWS9638) to aid in
assuring maximum transaxle performance.
Notice: Using automatic transmission
fluid other than “Toyota Genuine ATF
Type WS” may cause deterioration in
shift quality, locking up of your transmission
accompanied by vibration, and
ultimately damage the automatic transmission
of your vehicle.
Please contact your Toyota dealer for further
details.

[tyrone_yaris]

Originally Posted by CTScott

You might want to take a closer look. The automatic has a dipstick. As for the changing interval - This seems to get discussed at least weekly here.

The Japanese version that I have does not have a dip stick so there is no way of really checking the ATF fluid condition for me

Does anyone have any idea why the Japs would put a dip stick on one model of a particular locatoin and not the other????

[CTScott]

Originally Posted by tyrone_yaris

The Japanese version that I have does not have a dip stick so there is no way of really checking the ATF fluid condition for me

Does anyone have any idea why the Japs would put a dip stick on one model of a particular locatoin and not the other????

That's because you have the K41 CVT, which is completely different than the U340 automatic.

[tyrone_yaris]

Oh i see. Do you know where I can get some info on drain / refill intervals for this transmission as the manual I have is in Japanese

Also if a DIY guide to do it is available on the net. Tried google but so far nothing.

[CTScott]

Originally Posted by tyrone_yaris

Oh i see. Do you know where I can get some info on drain / refill intervals for this transmission as the manual I have is in Japanese

Also if a DIY guide to do it is available on the net. Tried google but so far nothing.

Here is a DIY for your CVT:

http://www.microimageonline.com/foru...T-Fluid-Change

[tyrone_yaris]

Thanks CT Scott.

In the 4th point - I cant actually make out the location of the CVT refill hole.

In the 5th point - why do you have to let the oil drain till it slows to a slow drip?


Thanks

[CTScott]

Originally Posted by tyrone_yaris

Thanks CT Scott.

In the 4th point - I cant actually make out the location of the CVT refill hole.

In the 5th point - why do you have to let the oil drain till it slows to a slow drip?


Thanks

I don't have photo of the location of the filler hole, but from this larger diagram you can see two round areas on the end opposite where the transmission meets the engine. The plug is located on the right side of the lower round area. It is a larger head bolt then the others around it and is has a thin gasket visible around its edges.

CVT Fill.jpg

[bad]

Originally Posted by CTScott

You might want to take a closer look. The automatic has a dipstick. As for the changing interval - This seems to get discussed at least weekly here.

AUTOMATIC TRANSAXLE

Fluid capacity (drain and refill), L (qt.,
Imp. qt.): 2.5 (2.6, 2.2)

Fluid type:
Toyota Genuine ATF Type WS

Change automatic transmission fluid only
as necessary.

Generally, it is necessary to change
automatic transmission fluid only if your
vehicle is driven under one of the Special
Operating Conditions listed in your
“Scheduled Maintenance Guide” or
“Owner’s Manual Supplement”. When
changing the automatic transmission fluid,
use only “Toyota Genuine ATF Type WS”
(ATF JWS3324 or NWS9638) to aid in
assuring maximum transaxle performance.
Notice: Using automatic transmission
fluid other than “Toyota Genuine ATF
Type WS” may cause deterioration in
shift quality, locking up of your transmission
accompanied by vibration, and
ultimately damage the automatic transmission
of your vehicle.
Please contact your Toyota dealer for further
details.

I looked at the “Scheduled Maintenance Guide.” It never says when to change but it says when to check it. It says to check it pretty often.

I have 100K miles on my Yaris now. I bought it with 50K and don't know if the fluid was ever changed. I used the dipstick and saw the level was good. The color was purple, but a little dark. No metallic flakes or anything. I have no problems shifting (automatic).

Is it bad for the fluid to be a little dark?
Is there a good reason for me to change the fluid or even clean the filter and change the gasket as this website below instructs? (I know how much to use and to only use Toyota fluid.)

http://microimageonline.com/forums/s...ice-inspection

[bronsin]

Originally Posted by bad

Is there a good reason for me to change the fluid or even clean the filter and change the gasket as this website below instructs? (I know how much to use and to only use Toyota fluid.)

http://microimageonline.com/forums/s...ice-inspection

IMO...no....unless the vehicle has been in a flood or subjected to unusually harsh operating conditions like trailer towing, subzero operation, or very hot climate.

I check my level once a year and inspect the transmission for leaks while up on ramps for oil changes.