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Old 12-23-2013, 09:24 PM   #1
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2014 Automatic Transmission Temperatures question

I have a 2014 JKU with 3,000 miles. Automatic with 285/70R17 Duratrac's. Sometimes my trans temp seems high. Yesterday in 55 degree weather it was hitting 190ish degrees. Is this normal? Tonight in 40 degree weather it's at 172.

I called the Jeep dealer today and they said the normal warm weather trans temps are around 225 degrees. Sounds high to me. What is everyone else seeing?

Also, on a side note. Anyone else notice if you are at a stop and change from drive to park or neutral the trans temp changes??? It appears to change to the radiator fluid temp and then back to the trans temp if you put it back in drive. Strange....

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Old 12-23-2013, 10:52 PM   #2
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it is cooler here but my 2014 with about 3000 miles runs a bit lower on the tranny temps. I did a 50 mile drive on the highway the other day and I was watching it and it was around 165 at the highest when going up a 7 mile mountain pass. My coolant goes from about 200* to 212* bouncing up and down in that range most of the time.

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Old 12-23-2013, 11:04 PM   #3
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I had similar concerns on my wife's '013 Z-71 towing a loaded 16' cargo trailer 650 miles from Houston to the mountains in West Texas. Seeing temps as high as 240.

My research found that temps to 260 were acceptable w/ 280 being the max for reliable operation.. That's a Chevy trans. I would hope that the Mercedes designed auto 5 speed would be comparable.
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Old 12-24-2013, 12:10 AM   #4
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Quote:
Originally Posted by 56cbr600rr View Post
I have a 2014 JKU with 3,000 miles. Automatic with 285/70R17 Duratrac's. Sometimes my trans temp seems high. Yesterday in 55 degree weather it was hitting 190ish degrees. Is this normal? Tonight in 40 degree weather it's at 172.

I called the Jeep dealer today and they said the normal warm weather trans temps are around 225 degrees. Sounds high to me. What is everyone else seeing?

Also, on a side note. Anyone else notice if you are at a stop and change from drive to park or neutral the trans temp changes??? It appears to change to the radiator fluid temp and then back to the trans temp if you put it back in drive. Strange....
Those temperatures are fine.
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Old 12-24-2013, 03:43 AM   #5
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As I mentioned those temps are fine. Just have a look at the fluid level, checking it never hurts.
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Old 12-24-2013, 05:51 AM   #6
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Quote:
Originally Posted by 56cbr600rr View Post
I have a 2014 JKU with 3,000 miles. Automatic with 285/70R17 Duratrac's.

I called the Jeep dealer today and they said the normal warm weather trans temps are around 225 degrees. Sounds high to me. What is everyone else seeing?

.
NO, 225 is not to high, sometimes in phoenix mid summer out trans temps will even climb higher, (particularly when towing), but above 240 is for some concern.
Keep in mind, that they run synthetic oil, which will not break down below 250, but rather handles these high temperature very well. So the design is built into them for high ambient's, so it will not hurt them..........
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Old 12-24-2013, 03:03 PM   #7
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Today after driving about 75 mph or so on GA400 in 40 degree weather I was around 185 and concerned. ..

After reading this I feel better. Thanks for
All the replies!
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Old 12-25-2013, 05:29 AM   #8
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Quote:
Originally Posted by 56cbr600rr View Post
Today after driving about 75 mph or so on GA400 in 40 degree weather I was around 185 and concerned. ..

After reading this I feel better. Thanks for
All the replies!
Enjoy your Wrangler!

Merry Christmas!
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Old 12-25-2013, 08:34 AM   #9
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Quote:
Originally Posted by 56cbr600rr View Post
Today after driving about 75 mph or so on GA400 in 40 degree weather I was around 185 and concerned. ..

After reading this I feel better. Thanks for
All the replies!

185° is just fine as mentioned ATF+4 is a synthetic fluid and can easily handle temps much higher than that. At about 240° I'd start to be concerned. As a side note if the transmission gets too hot I believe it will go into limp mode.

Merry Christmas!

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