Quote:
Originally Posted by BlackWorksInc
So for what it's worth, there are multiple temperature specifications for multiple years/models.
For example a 2007 Tundra with the AB60F calls for a check temp range of 115°~133°F, while the 2008~2021 model years with the same transmission call for 99°~113°F.
I don't really have a good answer for the variation beyond I am assuming some sort of inline production change (similar to how 1GR-FEs in 4Runners went from a 2-wire Cam sensor to a 3-wire with no actual change in the engine designation/architecture)
I have no idea where you got that screenshot with the blue text. You don't usually see blue text in the older Toyota FSMs and looking at both the FSM for a 2007 4Runner ( Attachment 393204) it states that the range should be 97°~115°F for both the A750E & A750F. Additionally Attachment 393205 has a chart that shows ATF temperature ranges for a handful of 2004-2008 Model Years that were using WS ATF at the time (as far as I can see there isn't a supersession to this TSB, so the information should still be accurate).
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I will say that I normally don't give the ATF temp ranges too much thought as I just pull up the specific year/model FSM and look up the temp for each vehicle I am currently working on (specifically because of the variations). Though I will note that the FSMs for newer vehicles will occasionally include a section for "High-Temperature Check," but I haven't seen that applied to older A750's, mostly seen that for the transaxles. |
Question about the screenshot answered below, but first, thanks for this info. It's a relief to know that Toyota apparently just has its reasons for the various ranges.
I bought an FSM CD right after buying my truck in 2014, IIRC from someone on this forum. I've never had reason to question anything I've found in it until now. By that I mean that every time I've followed a write-up from here, YouTube, etc., I always double-checked these FSM files to verify processes and info like torque values and so on, and it's always been right. I will obviously follow the doc you posted on the temp range since you have an impeccable source and truly appreciate you taking the time to post it.
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