One more drive and you get to call it normal
transmission temperature
- Thread starter halaweh
- Start date
Outstanding!
Looking at your picture, Toyota has given us a graphical hint possibly- operating temperature(s) in white shouldn't extend to areas beneath red?
... If they built the display to show that? ...
edit: It IS the way I would interpret the gauge.
It’s the only way I could imagine interpreting the graph! The more I think about @ultane ‘s comment a while back, the more I agree Toyota should have just used an old-fashioned warning light to indicate when the temp exceeds normal ranges, without any graph.
In the present state of information on EXACTLY how this display shows what, I agree.
If there was underpinning Toyota documentation that was PUBLIC and that information showed that the gauge operated somewhat the way we're estimating, I'd disagree- good gauging provides real-time guidance and therefore warning. Before damage if you're watching hopefully. A better widget that showed high/low limits or the actual temp in numbers would fix the issue. A software change....
My new mantra- Toyota are you listening?
Oh I totally agree with the value of good gauging. In fact, I’m fairly satisfied with the way it is as-is (though I’d like even more info). But looking at this from the lens of a mass consumer product (see the massive sales of the latest generation), I think for your average buyer (who is neither a Land Cruiser enthusiast specifically or automotive enthusiast generally) a simple warning light would be better. The additional information probably creates false concern for more owners than those who are able to intuit it and make practical use of.
I.e., most people are dumb, and less is more.
I think you're right- the meat of the market demographic is obviously elsewhere. The question I've been asking myself is why wouldn't you allow for a "performance instrumentation package"? In retrospect, I'd have paid extra for a more "car for drivers" interface. Wishing for an update that could be pushed out is too much to hope for it seems. There is some reverse engineering body of work somewhere apparently but the entirety of the internals is proprietary Toyota IP and they're not talking.
I wasn’t asking for an idiot light.. I was pontificating that Toyota would replace the gauge with an idiot light, to silence all of us, who have our worry beads out, and vigorously give them a workout.. daily.. unfortunately the facetious font isn’t available to me..
Keep an eye on it. Toyota service re-enabled it for some reason during routine maintenance.
- Thread starter
- #69
i drove today 400km (4 hours nonstop) under 36-42 degree weather and the road was full of sharp curves and lots of traffic (basically crossed the country to Eilat) , I enabled PDA for safety during 2nd half of the trip and I can report that the transmission temperature stayed dead center for 99.9% of the trip, it fluctuated very slightly at the end after 4 hours on a heavy traffic with 42 degree temp outside when the main large fan kicked it but I consider that totally normal behavior and its all good.. so there is also a clear link between transmission and engine cooling system
reporting this to close the topic in a good way! so this was a false alarm from my end
reporting this to close the topic in a good way! so this was a false alarm from my end
I recently climbed 2,000 feet over an 8-mile paved road accessible to standard passenger cars. The vehicle was not loaded, carrying only two adults and minimal gear. I kept it in 4HI, manually locked in 1st gear (1M), maintaining around 3,000 RPM the whole way up. During the drive, the dashboard temperature gauge rose to about 80%, and my OBD2 reader logged a peak transmission temperature of 240°F... It looks completely weird.
Stug4 - Sorry you had an issue. Was that like a 4.7% grade? No doubt that’s a climb, but doesn’t appear excessive. Was the tranny hunting in auto so you went down to 1st gear?
Maybe let the LC choose the appropriate gear, or use 2nd or 3rd. You’re going to get lots of things warm running 3000 rpm for 20 minutes or so under a load. But that grade & distance should just be a walk in the park for your LC. Did you check radiator & intercoolers for obstructions/debris?
Similar 10-15mph climb in 4HI auto heated up transmission to 225F in 5 minutes and I had to switch to 4low. My point is that manual mode in 4hi did not help as I expected.
I would think manual mode in the situation you described would hurt, not help.
You may not be that far out of expected temps. A 225-250 degree tranny temp looks to be what might be expected when under a hard load. Overheated AT fluid can start breaking down & begin making varnish.
Our LC tranny temps stabilize out around 205 F & then creeps up after an hour or so up to 215 while running steady on flat highway, high speed (80mph) @ 100 degrees air temp.
Pretty sure Toyota ATF is rated to 300 degrees.
Our LC tranny temps stabilize out around 205 F & then creeps up after an hour or so up to 215 while running steady on flat highway, high speed (80mph) @ 100 degrees air temp.
Pretty sure Toyota ATF is rated to 300 degrees.
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