I recently performed the long overdue DIY Transmission fluid flush and fill on the A760E RWD trans. This method gets nearly ½ the fluid out in one pass. It does take some time, but I only had the vehicle in the air one time.

Preclude:
Perform this at your own risk. I am not responsible for your health, safety, or that of your vehicle. I am only sharing what I did.

Overview:
A) Drain the fluid, Start the engine and rev it couple times (gets another quart out), pull the pan, clean the pan pull the filter, install new filter with old O'ring, install pan, fill it with 3 quarts, start it, add a quart. Now run it through the gears keeping the speeds low. Repeat step A but limit time spent going through the gears. Allow to cool. At best it will take a few hours to cool.
Briefly run it long enough to take the overflow plug out and confirm it is overflowing while at idle. If not fill until overflowing. Check at correct temp. That's it in a nutshell.

Required items:
ATL1G-EA, Fluid - I used 3 gallons of Amsoil Signature Series Fuel Efficient Synthetic ATF. Check your local Coastal store. They sell it.
35168-60010, Pan Gasket - new or roll the dice. These can be reused.
35330-50020, Oil Filter
90301-31014, Oil Filter O'ring X2. Buy a spare. These are cheap.
Pan plug washer - optional.
Overflow plug washer - optional.
Fill plug O’ring – optional.

Tools:
Jack, 4 stands, 2"x6" to drive up on so the jack fits under car.
Fluid pump. Harbour Freight Universal ~$7.00 worked great.
Funnels, spare jug, 6 quart drain pan. Measuring cup if you're curious.
Brake Cleaner, shop towels.
Flood light.
Temperature check tool – I used the phone App - OBD Fusion with Lexus/Toyota/Scion PID add-on pack and OBDII Elm327 Bluetooth. Load engine coolant and A/T oil temperature. Verify function before fluid change day.
1/4" speed handle, 10mm wobble. Add a spring sleeve if you like or Power tools are up to you....
10mm socket
14mm socket
22mm socket
Torx bit for overflow.
Ratchets and extensions.

Prep:
Park car over night, don't drive it if you wish to check the fluid level before dumping the fluid. I did for kicks and trickle happened right at temp.

Car on stands:
Drive car up on 2"x6" boards, set parking brake, turn engine off. Jack safely and support with stands at 4 corners. Make sure car is level. I used the front lower A-arms (snug against tires) and square unibody chassis area at the rear (ahead of sub-frame) placing hardwood between stands and chassis.
** Verify vehicle is stable. **


Gather tools and check fluid level: Optional
Start OBD Fusion App.
Place drain pan under overlfow plug (it's marked), grab ratchet/torx bit, shop towels.
Start engine and phone app. Load Dashboard with temperature readings.
Pull overflow plug and see what happens. Watch as trans oil temp climbs past 100°F. Mine began to trickle at 105°F.
Install overflow plug. Turn engine off.

With warm fuzzy achieved, continue on.

Fluid Dump:
Remove rear most plug, dump fluid. When it stops flowing, start engine and rev to 3,500 RPM twice. Shut engine off. Allow fluid to drain. Install plug.
Remove pan bolts leaving two bolts in the center side by side. Loosen the remaining bolts and smack pan to loosen it. Remove the bolts and lower the pan. Dump oil pan, clean magnets, clean pan and surface of gasket.


Remove oil filter and allow fluid to drain. Install old O'ring on new filter.
​​​​​​



Install new filter and evenly seat the filter to the valve-body. Draw the four bolts up evenly and tighten them.
Wipe the transmission pan mount surface free of oil. Wipe pan gasket free of oil. Install oil pan. Snug bolts enough that it won't leak.

Pump in 4 quarts of new fluid. If you didn't start it or pull the filter, four will cause a flood out the overflow. Install fill plug and start engine. My vehicle was securely jacked so I ran it through the gears keeping the speed low (45 MPH), using mostly the lower gears to circulate the fluid. Mind you, you have to disable TRAC or ABS will lock the rear brakes. Also, if equipped with NAV, your car will ford rivers, streams, lakes as it drives away ignoring relevant GPS data.

I ran mine like 10 min. which will elevate the fluid temp to the 175°F range and that will take hours to cool down. I had time so I circulated the oil.

Now repeat above steps. Drain the fluid. Start the engine reving it to 3500 RPM a couple times and kill it. Let it drain, pull the pan, drop the filter, let that drain and clean it all up for a final install with a new gasket. Install a new O'ring at this time, draw the filter bolts up evenly so as not to pinch the O’ring and cut it. Clean both mating surfaces for the gasket (pan and case with brake cleaner or acetone), install new gasket, install pan. Tighten pan bolts evenly. I used my 1/4" speed handle. Nope no Torque Wrench used here as I stop when it feels right.

Fill with 4 quarts and start it, run it through the gears and let it cool. At this time it should take less than a quart of fluid to get to the overflow point.
Give it wipe down and sort out the tools for final fluid check when cooled off.




Verify fluid level when the temperature is between 102° and 114°F (39° and 46°C). If no trickle, add fluid. Allow to trickle out and seal it. Double check your work and call it day. If it gets over 120°F before you're done, time to shut it off and let it cool.

That's about it.

#2IS Maintenance
#2IS Fluid Change

Here is what went back in. Signature Series Fuel Efficient Synthetic ATF PN# ATL1G-EA.




Some lovely aluminum bits removed from the oil sump. So, even aluminum is heavy enough to stay at rest at the bottom of the pan staying out of circulation.


Overall, the pan was pretty clean, magnets not too fury. Upon completion, the shifts under load take on a more binary feeling, being crisp. When buried, each gear change throws car forward. It feels like it should once again. Only regret is not doing it sooner.

Shown here is Chevy TH350 shift kit spring on a 1/4" drive 10mm socket.. These work great for keeping your wobble up! Snapper 12pt 10mm 1/4" wobble.



The main thing to share here is don't be afraid. It's not intimidating.

I didn't do an under car screen shot, but here are the gauges loaded for overflow checking using the Fusion App.



H2o temp = 187°F
Trans fluid = 194°F
As for compressor RPM, I guess I lost boost in 7th gear!

PS - Make sure whatever tool you use works before crawling under. It takes no time at all for the fluid temp to rocket past 120.

 

Some added info from the manual. Source is www.alldatadiy.com I recommend anyone keeping their 2IS for any period of time sign up for this, It's cheap for year subscription.

Reference is A760E RWD....







So....
Tags for searching / future reference.
#2IS Service
#2IS Facts
#2IS Maintenance

 

@Petet ^^ The pictures here screen shots. It's as good as they get quality wise (or lack there of in this case). Hopefully that helps.

 

Here is the tech service guide.

 

Thanks , I’ll check it out on a big screen. The trans reset section is blurry on my phone.

 

What draws you to wanting to reset it/relearn?

 

Won't just removing the ECT fuse do the same thing? Pulling ECU fuse seems to reset LTFT data.

 

I plan to do another drop and refill. This time change the filter.

My 1-2 shift seems delayed. Not by much but definitely a delay. I kept the ECT button on for a few weeks. The 1-2 shift feels better with the button on. I’m thinking maybe a reset would help.

 

I have always assumed that would do it, but it may in fact not be the same... I honestly don't know.

Suppose one could try each?

Edit: hindsight says some stored and learned information stays. Reset forces idle, fuel trims, drive, and shift relearn.

 

Friendly $bump$ as people are asking quesions...

 

Interested if any members have used Redline D6 AT transmission fluid in place of the OEM TOYOTA 00289-ATFWS - automatic trans fluid.

 

Looks like no one is saying yes to this. What fluid did you use, some time has passed.

 

2013FSport,
Decided to use the OEM Toyota 00289-ATFWS trans fluid.
Had the exchange performed at Toyota dealership for $500 (including tax, waste fee), and took approximately 4 hrs. To be transparent, unsure exactly when service began on vehicle after vehicle was driven into service bay. Unable to see vehicle while service was being performed, but technician did state fluid was brownish rather than red, but still acceptable (85,000 miles). Also stated service for trans fluid should be performed at 60,000 mile intervals. Shifting does appear to be smoother,.
The trans fluid exchange was performed by BG trans extractor unit, pre-flushed with ATF WS transmission fluid. The transmission fluid change service included of the following; (2nd Gen IS350 RWD with AISIN A760E 6-speed transmission, 7.5 Qts. Total)
- Remove transmission pan and replace existing trans filter / filter o ring / pan gasket
The following parts were supplied to the dealership:
00289-ATFWS - trans fluid (6 qts.)
35330-50020 - transmission filter / strainer
35168-60010 - transmission filter gasket
90301-31014 - Transmission filter o ring
35178-30010 - Drain Plug and Overflow Plug / Gasket (Qty: 2)
90301-15004 - Fill Plug / Gasket / O-Ring

Also posted here;IS350 Trans Fluid Exchange https://www.clublexus.com/forums/

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