How to Drain/Refill Automatic Transmission

I think @Bishop84 did awhile back but no one seemed interested in changing it.

 

oh, ok

 

Did the drain and refill of my transmission fluid today using the new Scan Guage 3
Pulled the level check plug at 112F on the pan temp. She shifts perfectly! Mounted it up using an aluminum bracket I fabed up.
Definitely liking the new Guage

 

I have a 2014 base model w/2.7l engine. Trying to do a drain/refill with ATF. I have no overflow valve on the reservoir and on all the tapes I've seen, there is usually the drain plug and overfill plug facing downward. If I have no overflow valve, is there some other alteration in the fill plug, too? I can't find the refill plug despite looking and looking. Whass up?

 

I think 4 bangers have a dip stick and don't use WS compliant fluid. So if you have a dip stick, just check the dipstick when the truck is running and make sure the fluid level is between the high and low marks.

 

^

Interested in this. I've got a 2.5 gen 4cyl 4spd and wana do mine but haven't located a good write up for this. Welp, time to browse thru 100 pages of possible answer (unless its the same deal minus having a dipstick and only one bolt down low)

 

https://www.tacomaworld.com/threads...sions-write-up-your-4-speed-automatic.325531/

 

I see the TSB says 2005-2008 listed as the years with the change. Is it just those years or all second gen’s? I see the trans are A750E and F. I’m not sure which trans I have in my 2015 trd sport A/T.

 

Sub

 

Great article, nicely done. I found this by watching a Tacomaholic Youtube video on the same subject. I thought I would throw in my experience as I have seen some ask the question on this thread but not really any answers.

And that is: I couldn't get the A/T Temp light to go away when trying to get into the mode. It stayed solid. I did drive the truck in the morning but it sat in the driveway for 7 hrs before I drained the old fluid and attempted to get into A/T Temp mode. The truck was cool and drain pan was cool. I gave up and decided to try in the morning to see if I saw the same.

The next morning I got into A/T Temp mode straight away, first try (light went out after 2 seconds). I put the timer on it and took 28 min for the light to go solid and shooting a temp at the pan was consistent 99 degrees. All good!

One more thing to add, I had my Tacoma serviced at 60,000 miles and got the transmission "flushed" at the dealership, I now have 145,000 miles. Some of the miles, ~15,000 miles, are towing a 4,000 lb RV around the western US and a whole lot of mountains so I that is why I wanted to do this procedure. I was surprised that I only got 2 qts out when draining. I decided to go back with 3 qts back in and that was perfect as a trickle started flowing for a few seconds (probably ~1/8 cup). Looks like the dealership wasn't close on the refill part back when it had 60,000 miles... So should be good now.

 

I use an obd2 scanner for the transmission temperature.

 

Did you have to use an expensive scan tool/gauge? Which one?

 

No it was cheap and I just got the following scan tool below and installed the transmission temp reader, which was found on here, for the iPhone OBD Fusion app:

Limited-time deal: Veepeak OBDCheck BLE+ Bluetooth 4.0 OBD II Scanner for iOS & Android, Car Diagnostic Code Reader Scan Tool for Universal OBDII / EOBD Vehicles

$42 Veepeak OBDCheck BLE+ Bluetooth OBD II Scanner Wireless Car Diagnostic Scan Tool Check Engine Code Reader for iOS & Android

https://www.amazon.com/dp/B076XVQMVS

 

I believe this is the instructions to install the PID to read the Tacoma trans temp (Pan and torque converter):

https://www.tacomaworld.com/threads/how-to-get-transmission-temps-on-fusion-app-for-ios.359279/

 

I've got a 2015 prerunner a430e (dip stick)

Since its not the electronic trans (iirc) the temp check thing isnt necessary correct?

So just drain it when warm (30 min after a drive?) And fill new fluid the exact amount that came out - fire up, shift thru gears, check the dip stick - add if necessary?

I've looked all over here and the interwebs and it all comes back w the 2 plug trans w the temp check bs... so wana make sure I'm gravy. About to drain and fill tomorrow

 

If you have the 4 cylinder then I believe you have a dipstick so it doesn’t use WS and you do not have to perform the temp check, if you have a 6 cylinder (4.0 liter) you have to do the temp procedure or have a scan tool that shows the transmission temperature, and then perform it that way.

 

Yeah its a 4 banger. I guess I'll find out the hard way tomorrow. Weird how theres almost no common info out there on these spcifics

 

Procedure for the A340 Trans.

 

Got er done! Easy peasy

 

This might have been answered already but for the 2wd prerunners, I just started this and looks like I only got 1qt out from the drain. Is that normal before I start to refill with the same amount?