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Unread 09-07-2009, 12:23 AM   #1
darg
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Hot Oil Message in Dash -2009 JK

Hi Guys,

today I had the first outing with my brand new Rubicon und after leaving paved road we were climbing a road up a mountain. After not only 4 Miles I got the message in the dash: hot oil. I checked the manual but this message does not exist so the big question here, what oil is hot? Trans? Engin? Fryer?
After stopping for around 3 Minutes it was gone and never came back, not even when we were crawling for 2 hours around Poker Flat in CA. Any input? It's odd that the manual does not even know the message.

Thanks

darg

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Unread 09-07-2009, 12:52 AM   #2
Alexia
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That indicates the transmission is over heating.

As the prelude to a potential fire as others have posted.
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Unread 09-07-2009, 12:57 AM   #3
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x2 on what alexia said. I would invest in a Transmission cooler asap.
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Unread 09-07-2009, 02:02 AM   #4
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I must be tired - I read that topic as "hot oil massage in dash" and was thinking, "WHAT??" (:
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Unread 09-07-2009, 08:50 AM   #5
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I have never heard of that message. Maybe it is the trans fluid? I know with the '07-'08, when the trans fluid got hot, all we get is a single chime sound, and nothing else. Confuses many people because it's always "what the hell was that chime" and then nothing on the dash. So maybe the '09's they finally give you a visual indicator to go along with it???
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Unread 09-07-2009, 08:53 AM   #6
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Quote:
Originally Posted by N2rock View Post
I have never heard of that message. Maybe it is the trans fluid? I know with the '07-'08, when the trans fluid got hot, all we get is a single chime sound, and nothing else. Confuses many people because it's always "what the hell was that chime" and then nothing on the dash. So maybe the '09's they finally give you a visual indicator to go along with it???
Yes, is started with 2009.
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Unread 09-07-2009, 09:18 AM   #7
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I must be tired - I read that topic as "hot oil massage in dash" and was thinking, "WHAT??" (:
I actually thought the exact same thing, i figured he bought it new from the dealer and there was a bottle of massage oil in the dash. haha
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Unread 09-07-2009, 10:40 AM   #8
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Hot tranny fluid, interesting. I was asking the dealer as I bought the car last week if the tranny has a cooler and according to their tech-guy it is couppled with the radiator now. I will investigate that, otherwise I will get one in.

The message was popping up when I was going with lower RPM up a road. I would expect the oil is getting hotter, when crawling up steep hills or similar, what you think?

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Unread 09-07-2009, 10:57 AM   #9
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Originally Posted by darg View Post
Hot tranny fluid, interesting. I was asking the dealer as I bought the car last week if the tranny has a cooler and according to their tech-guy it is couppled with the radiator now. I will investigate that, otherwise I will get one in.

The message was popping up when I was going with lower RPM up a road. I would expect the oil is getting hotter, when crawling up steep hills or similar, what you think?

darg
Those conditions involve lots of churning of the torque converter, so it is not surprising. Keep it in low gears rather than let it upshift and it will stay cooler.

When I drove my old YJ across country I put in a gage. I found that hills were the big thing. Going 65+ across the hot Utah desert didn't do much at all, climbing Loveland pass in high gear did (I downshifted a gear and the temperature came down).
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Unread 09-07-2009, 11:39 AM   #10
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So low RPM but high load like an uphill is heating more than higher RPM but slow speed, got it. I will check the cooler and put one in just in case.

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Unread 09-07-2009, 01:52 PM   #11
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I must be tired - I read that topic as "hot oil massage in dash" and was thinking, "WHAT??" (:

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Unread 09-07-2009, 06:16 PM   #12
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Quote:
Originally Posted by darg View Post
Hot tranny fluid, interesting. I was asking the dealer as I bought the car last week if the tranny has a cooler and according to their tech-guy it is couppled with the radiator now. I will investigate that, otherwise I will get one in.
All JK's have that cooler, and its really inadequate. Which is why quite a few people install larger coolers.
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Unread 09-07-2009, 07:36 PM   #13
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darq where you in 4hi or low? it will run cooler in 4low and you prob wont have the issue in 4low at all, though a tranny cooler is not a bad idea. I have one on mine B&M 70268.

the tranny ding for the 07-08 happens at 240, I believe tranny fluid boils or burns at 252-254ish, I forget. the jk's all have a tranny cooler built into the botttom 1/4 of the a/c condensor which is in front of the radiator. its airflow is mostly blocked by the front bumper, not to brilliant IMO. Plus that is says right in the owners manual if you experience hot temps to put in a additional cooler, which only means they know their crap is inadequate. It will be interesting to see what the NTSB finds in their investigation on whether or not the tranny overheating is causing fires.
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Unread 09-08-2009, 02:02 AM   #14
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I was in 4Hi and we were going relativly slow, around 20 to 30 mph with auto in D. At first I had just a ding but no message, after 3 minutes later I got a ding and the message. The radiator fan was screaming at full power. We stopped and we looked up the manual on the trail. It took us maybe 5 minutes till we gave up, the message was gone and the radiator fan was off again.
I'm not sure but since the car is brand new, is this cooler all times in the loop or is it coupled to a thermostat? If yes, it might be that the loop to the cooler was never open and not properly primed so that it took a moment to let ATF in it and do it's work. Since I was driving for a while longer in the same manner and it never came back. I had something like that on an Alfa Romeo GTV after an engine rebuilt but just with normal motor oil temperature.
What cooler would you recommend? I found some in the 4WD catalog for around $130 to $150. Where would be a mounting place since the engine bay is pretty full.
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Unread 09-08-2009, 02:49 AM   #15
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I need a tranny cooler too. Looking for good, specific info on what to install. A writeup would be nice too (:
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