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Transmission temperature warning light

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NyoGoat

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Discussion starter · #1 · (Edited by Moderator)
15. Transmission Temperature Warning Light
During sustained high speed driving on hot
days, the automatic transaxle oil may become
too hot. If this happens, the transmission overheat
indicator light will come on and the
vehicle will slow slightly until the automatic transaxle
cools down enough to allow a return to the requested
speed. If the high speed is maintained, the overheating
will reoccur as before in a cyclic fashion.
Click to expand...
We moved down to Las Vegas in May. We haven't made a lot of road trips but every time we have had to drive for more than an hour we get this warning light and the jeep slows down to about 40 MPH. We are in a desert, it does get hot, I've noticed that it will do this above 90 degrees though (we have had plenty of over 100 days also).

It seems to me that the Patriot is not built for heat. I have liked the jeep so far but I'm afraid that might be a problem that will cause us to trade it in. Really, I do need to be able to plan on driving for a sustained period down here. Has anybody else noticed a problem with this?
 
#2 ·
Ive driven mine in 90-100 deg heat quite often with no problems. I drive 65 mph max, with no extra load and moderate, short grades.
 
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#3 ·
NyoGoat said:
We moved down to Las Vegas in May. We haven't made a lot of road trips but every time we have had to drive for more than an hour we get this warning light and the jeep slows down to about 40 MPH. We are in a desert, it does get hot, i've noticed that it will do this above 90 degrees though (we have had plenty of over 100 days also).

It seems to me that the Patriot is not built for heat. I have liked the jeep so far but I'm afraid that might be a problem that will cause us to trade it in. Really, I do need to be able to plan on driving for a sustained period down here. Has anybody else noticed a problem with this?
Click to expand...
I know this hasnt been discussed for a while, but this just happened to me FOUR TIMES on one trip. Two on the way up, two on the way back.

This had happened before and you basically loses umph, the pat will drop to 40MPH and nothing higher until you pull over, put it in neutral and sit. I have started waiting at least five minutes after the light goes off before I put it back in gear and head off.

Has anybody else had this happen????

I took it to the dealer twice for this already and they havent found anything, once I left the pat there for almost a week, NOTHING was found.

This is ridiculous, i was going 70-75 The speed limit is 70 on I-5. i just dont get it

I put about 1300 miles on the pat this past week with the trip. This morning when I got in to go to work I had almost no power, and everytime I've driven it since we got back i havent really had that much power.

I am going to take it back, this is crazy!!!! PM ME if this has happened to you, or you know anything to help us!!!!
 
#5 ·
Just seeing this thread for the first time.

I've got 79000 miles on mine... almost all in desert heat. Without ever seeing the transmission warning light even once. This includes some very hot conditions (high speed, towing, 110°F+ temps).

I don't know what to say. Low transmission fluid level? Trapped air in the fluid? Something stuck under the vehicle blocking air flow around the transmission?
 
#6 ·
see this is an old post,
but will add anyway
this is as hot as i've seen it
Image

and never had a problem with tranny temp light,
have also taken long road trips down south,
90 to +100 all day and driving all day/night without a problem
if hes getting overheating in 90 temps, say there a problem somewhere
 
#7 ·
Could be you need to change the transaxle oil? Maybe it will help.
 
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#9 ·
Terasec said:
see this is an old post,
but will add anyway
this is as hot as i've seen it
Image

and never had a problem with tranny temp light,
have also taken long road trips down south,
90 to +100 all day and driving all day/night without a problem
if hes getting overheating in 90 temps, say there a problem somewhere
Click to expand...


Hehe. 108°F ? Amateur. :D
We call that a cooling trend.
Image
 
#11 ·
Its the long, gradual inclines that get to vehicles.
Or the long, gradual decline...

Just like brakes, don't like to be on for lengthy periods of time, so too with transmissions pulling uphill.
A short, steep incline probably no issue but a long grind over miles...you probably aren't going fast enough to pull enough cooling air over the transmission.

We have the Coquihalla Pass, a newer road into the Interior of BC. Hours of slight uphill, just enough to make a vehicle really work.
It ends at Kamloops, a town with more transmission and radiator shops than anywhere I've ever seen.

Those that drive it regularly are prepped, but tourists, folks pulling a U Haul or those in rental campers and RV's are sheep for the shearing in Kamloops.
 
#13 ·
the Pat was in the DLR a few days before for regular oil change, I also had them do the 23 point inspection (all fluid levels were fine).

this has even happened driving from orange county to LA (45-60 mins) driving 60-70. makes absolutely no sense, im going to take the Pat to the dealer tomorrow and drop it off and get a rental car until they fix it. Last time they had it for a week and found nothing.
 
#14 ·
I bought a used 2009 Patriot less than 2 months ago that has 96k miles on it. Every time I drove it at highway speeds for more than 30 minutes the transmission overheat light came on. I also purchased the EasyCare extended warranty so I made an appointment and dropped it off at the dealer. Its not a Jeep dealer, but they had a EasyCare mechanic scheduled that is a 3x certified master mechanic for Chrysler, Dodge, and Jeep. I took a test drive with him and explained everything in detail.

Anyway, here are his notes verbatiam from my invoice. Hopefully it helps someone else with this issue.
96803 ROAMING SCANNED FOR CODES. HAD CODE IN PCM FOR TRANSMISSION
OVERHEATING. FOUND TSB RELATING TO CVT OVERHEATING. SAID TO CHANGE
FLUID IF VECHILE HAD OVER 50K MILES & FLUID WAS ORIGINAL. CHANGED FLUID
& FILTER. ALSO FLASHED PCM FOR TRANSMISSION DRIVABILITY IMPROVEMENTS.
Click to expand...
Picked up the Patriot and drove it home today. I have noticed a few things better already.
  1. Overall the transmission is quieter. I attribute that to the fluid and filter change.
  2. I no longer notice the artificial 'shift points'. The RPMs are much smoother and consistant. Based on things I have read, I believe the PCM flash is responsible for this improvement.
  3. (Pending) Need to take a long drive to see if the overheating issue is resolved.
-Doug
 
#15 ·
d_fisher said:
I bought a used 2009 Patriot less than 2 months ago that has 96k miles on it. Every time I drove it at highway speeds for more than 30 minutes the transmission overheat light came on. I also purchased the EasyCare extended warranty so I made an appointment and dropped it off at the dealer. Its not a Jeep dealer, but they had a EasyCare mechanic scheduled that is a 3x certified master mechanic for Chrysler, Dodge, and Jeep. I took a test drive with him and explained everything in detail.

Anyway, here are his notes verbatiam from my invoice. Hopefully it helps someone else with this issue.

Picked up the Patriot and drove it home today. I have noticed a few things better already.
  1. Overall the transmission is quieter. I attribute that to the fluid and filter change.
  2. I no longer notice the artificial 'shift points'. The RPMs are much smoother and consistant. Based on things I have read, I believe the PCM flash is responsible for this improvement.
  3. (Pending) Need to take a long drive to see if the overheating issue is resolved.
-Doug
Click to expand...
Welcome Doug.

I just have to say that is a heck of a first post!
Informative and contributes and...we need more now, intro, the story of your ride, pictures of your dog, you know...
 
#16 ·
NyoGoat said:
We moved down to Las Vegas in May. We haven't made a lot of road trips but every time we have had to drive for more than an hour we get this warning light and the jeep slows down to about 40 MPH. We are in a desert, it does get hot, i've noticed that it will do this above 90 degrees though (we have had plenty of over 100 days also).

It seems to me that the Patriot is not built for heat. I have liked the jeep so far but I'm afraid that might be a problem that will cause us to trade it in. Really, I do need to be able to plan on driving for a sustained period down here. Has anybody else noticed a problem with this?
Click to expand...
Hello! I am new in this forum... I just wanted to know if you could find the problem, because I have the EXACT same situation with my Jeep Compass 07.. Please, help!
 
#17 ·
I have driven mine over 14,000 miles in the Las Vegas area no problem. Trips to St George, Utah and back, and a trip to the beach in California with no overheating issue. Even in 112* heat with a/c at 75mph+ loaded with people and a full tank of gas. I have never seen my coolant temp gauge go above half way.

Glad to know the fluid change refreshed your ride's power and capability.
 
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#18 ·
Just had this happen to me. Driving from San Diego to Phoenix this week. I was at about 83 mph for 2 hours in 106F temperature. It came on right before my exit. I drove at 55 for about 15 minutes and it went away.
 
#19 ·
Make sure your AC is on recirculate. Had this problem once and I believe it was due to the wife driving with the normal ac rather than recirculate.
 
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#20 ·
I also live in Vegas and on Memorial day weekend I went to Great Basin National Park (Baker, NV) and my temp light came on after 120 miles and it was 80 degrees outside. Turns out that the Transmission Cooler was faulty and they replaced it for me under warranty (I have the max care lifetime coverage) and topped off the tranny fluid. They also noticed that the alternator was making noises and replaced it too...$100 Deductible and I was on the way :)

If you still have the problem Prestige Jeep in the NW treated me very well. The only problem is that they are a little backed up.
 
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