2005 Tundra ATF Change; OBD2 port Pin #s

I'm planning to perform a ATF drain & fill on a 2005 tundra SR5 (V6). I've read a # of posts and articles covering this procedure on Toyota vehicles that do not have dipsticks, and lacking a dipstick, the correct fluid level is established by an overflow plug. Also, the fluid temperature must be in the 115 - 130 degree F range to accurately check the level.

Lacking a scan tool to measure the fluid temperature, I had planned to use the trucks OBD2 system, employing a piece of copper wire, to "jump' the connector, as discussed in a number of posts. However, unless I'm mistaken, it appears to be that the OBD2 port on this vehicle has only 1 row of 8 PINS (located above the gas pedal), in contrast to the 16 PIN configuration that has been cited in several posts.

Am I mistaken about this 8 PIN configuration? Or is there a jumper method for this 8 PIN configuration that allows one to be alerted when the correct temperature range is reached for checking the fluid level via the overflow plug?

Thanks in advance for any assistance in addressing this issue!!

 

I can't offer any assistance on the pin, but my unsolicited advice is to buy a $40 infrared thermometer, scan the pan until the temp shows in the proper range, then proceed with drain and fill operations. The pan is sheet metal which is very thermo conductive. Several youtube videos have shown the infrared thermometer temp to be within 5 degrees of the fluid temp. Good luck.

 

As long as you measure what comes out and put that exact amount back in, you can probably avoid all the headache you're describing. Don't over think it.

 

I suspect the 8 pin connector you've found is not the OBD2 port. For your model Tundra, look for the OBD2 port on the left side of the steering column, lower left side of the dash.

 

If you have a smart (dumb) phone and are willing to spend about $30 you can measure the trans temp whenever you please. I picked up a Bluetooth obd2 adapter for about $25 on Amazon and paid for the app called "torque pro". If you plug in a custom pid you can get the trans temp to feed right to your phone real time. It was half as hard as it sounds. I would offer one piece of advice though. Disable all the gps crap on torque so your data usage doesn't shoot way up in a hurry. Unless you have unlimited I suppose.

Here is where I found the pid for the trans temp. I believe them to be correct although I cannot verify.

 

Why not just take it to the dealership and have a total flush and refill done, It cost me about $260. It only needs to be serviced like that every 100k miles.
That's the only thing I have the dealership do, its to painful to have them do anything else.

 

I used this video and everything worked out.

https://youtu.be/NM_QoPiSEtI

05 Dbl Cab

 

Excellent video, I did mine this weekend.
I did a load of research on fluid too, regarding the Toyota WS and Valvoline Maxlife. The previous owner used the Maxlife in my truck for the last 5 years without any issues. Toyota says from 2004 you need to use their WS. From what I saw, the WS was created out of environmental concerns and the Valvoline Maxlife ATF is still safe to use...

 

Any indications if Maxlife is safe to use in my 02? I've been using it without issue but I've read conflicting things.

 

Can't recall if I used Toyota brand or Red Line. Regardless, everything seems fine about 10k miles later.

 

I believe that is the correct fluid from 2000-2003 with the 4.7L engine at least. In 2004 and newer Toyota says ATF WS (World Standard).

 

I will pay the $250 at the dealer save the headache!

 

I agree with a flush....but a drain and fill is super simple and takes about an hour total for about $25. I plan on doing it once a year, that should keep the fluid fresh.

 

My Toyota dealership won't even do a flush anymore. It has created too many problems for people. If you do a series of drain+fills it should get you pretty close to a flush without the cost and the risk. There really isn't any reason to pay $250 for this. Doing a drain+fill is easier than an oil change as you don't even have to remove the skid plate.

 

Stearlership quoted me $475 for drain and fill in 2025. Going to be doing it myself lol (insert “opens empty wallet dot gif”)

 

Find a BG certified place. Have them do the BG transmission service. It'll cost less and put your transmission under warranty for (I think?) 12 months.