2025 RX engine temp variation
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1st Gear
Joined: Dec 2025
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2025 RX engine temp variation
2025 RX 2.4L turbo, non hybrid. I notice on the highway that the engine temp varies sometimes as much as 30-40 degrees. Specifically going down to 180F then climbing back to 206-208F. Today I noticed it get as low as about 170F. I also sometimes hear the cooling fans kick on and then off, but I don’t notice a reduction in temperature. Anyone else experienced this? Is this normal?
Coolant reservoirs are at the full mark.
Coolant reservoirs are at the full mark.
Intermediate
Joined: Sep 2025
Posts: 279
Likes: 216
From: FL
I'd have to find exactly how I did it, but there is a setting to select what you want to display to the left and right of the main meter. I had an elapsed time clock there when I took delivery, which was kind of useless, so I picked one that displayed the coolant temp, oil temp, and turbo boost pressure. The coolant temp is what I said was between 200 - 210.
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Intermediate
Joined: Apr 2017
Posts: 298
Likes: 125
From: CA - California
I experience this in my 23. My guesses were that it is related to boost, detonation, or maybe tied to intercooler performance. Or it could be that this particular coolant temp sensor is right by the coolant regulator.
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Before I joined this forum, I was under the impression that the posters here must be very old (I mean mature) and are only knowledgeable about ancient (I mean not very contemporary) technology. I am proven wrong: instead of old geezers, many posters are geeky sages!! Hats Off!!
Intermediate
Joined: Sep 2025
Posts: 279
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From: FL
Before I joined this forum, I was under the impression that the posters here must be very old (I mean mature) and are only knowledgeable about ancient (I mean not very contemporary) technology. I am proven wrong: instead of old geezers, many posters are geeky sages!! Hats Off!!
Instructor
Joined: Jun 2023
Posts: 954
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From: NJ
PICTURES of the temp reading on the dash and detailed instructions appreciated! I'm still thinking that SOMETHING reset when our battery was replaced a week ago.
Intermediate
Joined: Apr 2017
Posts: 298
Likes: 125
From: CA - California
It's because they updated the instrument panel for the 2025 model year. I'm using OBD2 readers to get readings off my 23. Car Scanner app integrated with Android auto so it allows readings on the main infotainment screen.
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