Transmission fluid check and flush for 2007 Camry 3.5 liter V6 and 6 speed automatic transmission.

December 19, 2013

Toyota calls for special service tools and I suspect a person could do without them. The tools are:

Toyota Diagnostic Tester Kit TOY220036

CAN Interface Module Kit 01002744 (Controller Area Network for automobiles)

Transmission Fill System 00002-11100-02

These special service tools will most likely be out of the price range for the home user. Once again I suspect the tools are not necessary.

Filling the transmission or topping off the transmission level is done by delivering transmission fluid into a fill hole and observing when the transmission fluid has a slow constant drain from the lower overflow plug. This must be done at specific temperatures with the engine running.

The refill plug is on the left side of the engine transmission about 4” from the front and about 1” above the vertical center line. You can access it by turning the wheels to the far left and taking the wheel well apron off with a 10mm socket. Use a 24mm socket to remove the fill hole plug.

The overflow plug is on the bottom of the transmission fluid pan and slightly recessed.  Use a 6mm hex key to unscrew it.

Procedure:

Make sure your car is on level ground or elevate the car and keep it level. During the following test do not slam on the brakes while the wheels are turning and the car is on jacks.

Circulate the transmission fluid by starting the engine in Park.

Move the gear selector from Park to Reverse.

Note: Allow each gear to engage fully when shifting gears.

Move the gear selector from Reverse to Neutral.

Move the gear selector from Neutral to Drive.

If the wheels are free running, press GENTLY on the brakes to stop them and return the gear selector to the Park position. (stopping wheels too quickly could throw car off jack stands).

Check the A/T fluid by allowing the engine to idle until the A/T fluid temperature reaches 102 degrees Fahrenheit. (39 degrees C)  I will suggest a diagnostic tester, a digital thermocouple temperature sensor on the transmission pan or just touching the transmission pan and feeling for 102 degrees which is the temperature you would have on your forehead with a very bad fever.

Remove the overflow plug located on the bottom of the transmission pan with the engine idling. Use a 6mm hex key. The plug seals the overflow tube. The tube extends further up into the transmission to establish the proper fluid level. Only the overflow tube plug is removed. The transmission fluid must be filled to rise above this tube and then down through the overflow tube and out where the plug is removed.

Check that fluid comes out of the overflow tube while the A/T fluid temperature is in the range of 104 – 113 degrees F. (40 – 45 C)

If fluid comes out, reinstall the overflow plug.

Note: The transmission fluid could be low and the overflow tube could have a small amount of transmission fluid in it.  Don’t let this fool you. Make sure the transmission fluid flows for a second or two.

If fluid does not come out add A/T fluid. (Genuine ATF WS Transmission Fluid) by removing the refill plug on the left side of the transmission.

Add fluid until it comes out the overflow tube.

After the A/T fluid temperature drops below 102 degrees F, recheck A/T fluid level again by running the engine until the transmission fluid reaches 104 – 113 digress F. You can use a hose with gravity feed or a hose and squeeze bottle to put transmission fluid in the fill hole. Make sure fluid gently streams out of the overflow tube.  Then reinstall the overflow plug.

Install the refill plug.

Wheel well

Fill Plug

Drain

 

Transmission flush. (note, Ihave not yet done this proceedure on this car. I have done it on several other vehicles)

It is my guess the sealed Toyota transmission is subject to the same flushing conditions as any automatic transmission. You cannot remove all the fluid and then replace all the fluid. You must insert fluid as fluid drains. You can only drain a percentage of the fluid because the torque converter retains a lot of fluid.

If you drop the transmission fluid pan you will remove 3 to 4 quarts of transmission fluid. Then you reinstall the transmission pan and add the same amount you drained. Use the above fluid check to make certain the level is correct. If the car holds 12 quarts of transmission fluid and you replace 4 quarts you will replace 33% of the fluid. The next time you repeat this same procedure you will replace 33% of the 66% that remained in the transmission from the first flush.  This is as efficient as any form of transmission flush where you do not remove the transmission from the car. The percentages of transmission fluid renewal are as follows.

Removal of 4 quarts at a time. (this could be done on every other oil change)

1. 4 quarts or 33% of 100% = 66% unchanged.

2. 4 quarts of 33% of 66% - 43% unchanged

3. 4 quarts or 33% of 43% = 29% unchanged

4. 4 quarts or 33% of 29% = 19% unchanged

5. 4 quarts or 33% of 19% = 12% unchanged.

As you can see, by the 5th change you have replaced 88% of the transmission fluid if 4 quarts can be changed on every other oil change.

You will have to make note of the condition of transmission pan seal and determine if it needs replacement. You can also clean the pan and the magnets in the bottom of the pan that catch metal particles. I do not know at this time if there is a filter that needs to be replaced. Most transmission places tell me not to replace it if the transmission is functioning properly.