Jeep won't start/"Transmission over Temp" error - Jeep Commander Forums: Jeep Commander Forum
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post #1 of 46 (permalink) Old 07-13-2011, 02:25 PM Thread Starter
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Jeep won't start/"Transmission over Temp" error

Hey all, I really really hope someone has some direction on here, as I'm about ready to throttle this so called "dealer" I have my Jeep at right now.

The description may be a little long, so please bare with me.

Jeep Commander - 2007 - approx. 58,000 miles

About a year ago, my Commander started having this really strange issue where it would drive completely fine some days, but other days when I went to start it, it wouldn't make any sort of crank or catching sound, it just wouldn't start at all. All of the lights on my dash would flash, and then the "malfunction indicator light" would light up, and the little output screen where my mileage would normally read would light up with the "Transmission over Temp" message. After reading this and other similar forums, I read somewhere about leaving it sit for 30 minutes, because someone figured out with their own Commander that it was an issue with the key being locked out by the security system. Letting it sit worked for me, so I began using the spare key that I had and the issue stopped.

Now, two weeks ago out of no where, the issue is back but slightly different. We were out of town and the Jeep had been driving like a champ. It had even just before we left had it's inspection, oil change, and a full fluid change. Friday we were fine, and Saturday we were fine. Sunday it did the same thing as a year ago with the no start/malfunction light/trans over temp message. We let it sit for 30 minutes like we had done before, and it started up, so we drove where we were going for the day. About 4 hours after we got to our destination, it was doing the SAME thing again. We let it sit for 30 minutes again, and this time it still wouldn't start. So we went to dinner, came back approximately 1.5 hours later, and it was STILL doing the same thing. So by then we knew we were stranded for the night so we stayed over at a hotel. The next morning ( approximately 11 hours after we had last tried it), it was STILL doing the same thing! So I did some more googling, and came across another solution. I unhooked the negative terminal, put the key in the ignition and turned it to the "on" position for 5 minutes. I then took the key out, rehooked the negative terminal, and tried to start the car. This time, it did start. Luckily we were able to get home without needing a tow.

Now, not even an hour after we got home, it wasn't starting again. And this time, the negative terminal trick did not work. It started and didn't start intermittently for the next week. The following week I just worked from home and didn't even drive it, for fear of being stranded somewhere again.

This week, the dealer local to us was FINALLY able to get my Jeep in. It luckily started the day I was to take it out to them (Monday) and dropped it off and gave my explanation of the issue. Now yesterday and today both, they're calling me saying it's starting perfectly every time they try it, and of course they can find no codes on their systems!

I'm really at my wits end. I can't drive this car around knowing that at any moment I could be stuck somewhere again. Anyone have any suggestions? Anyone (hopefully) have the same issue that got resolved for you?? Mechanic that I am not, I'm a little pissed that the dealer mechanic has not tried anything other then trying to get it to not start. I mean really, how did they fix cars before there were so many damned computer codes? It seems to me that he should be testing things like the starter, transmission, security chips, etc for points of failure even if he can't replicate the issue.

Well, if you've stuck with me this long, thank you! I look forward to everyones suggestions!

Nicole
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post #2 of 46 (permalink) Old 07-13-2011, 03:11 PM
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Hey Geek,

I would search the Transmisson over temp" in the search here. I have read (and have also experience this too, just not the not starting part) and it seems to be different experience for most. Some it has been the starter, others some key issues and so forth. I would encourge you to look into some of those options on how they fixed their problems. Good Luck and Keep us posted!

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post #3 of 46 (permalink) Old 07-15-2011, 08:31 AM Thread Starter
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So after 2.5 days of pissing with it, they finally got my Jeep to not start. I don't know what code they pulled, but it led them to discover that there was a corroded connector between my starter and the TIPM. Does this answer make sense to anyone? I dont know enough about cars in general to know if that finding makes sense, and I'm just worried that there was something else going on that they missed because they saw this wire and stopped looking. However if this answer seems to make sense to you all, I"ll just pick up my Jeep and go on my way happy that it's FINALLY fixed.

Thanks!

Nicole
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post #4 of 46 (permalink) Old 07-31-2011, 06:04 PM
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Angry Transmission won't start problem on Commander

Well, I have the exact same Jeep, with almost the same mileage, and I am now stuck in the mode where the Jeep will not start. This happened in June once and the car would not start for a day. The morning that I was going to have it towed, it started and I was able to get it to the Jeep dealer. I had the same situation there. The car started, they tested the battery and it showed no problems.

THis week, after driving a short distance, it died at a restaurant. I could not get home so I had to walk. The next morning, it started on the third crank. I tried every trick I could find but not the battery disconnect one (yet).

This was ALSO right after I had new tires installed. I thought something was loose but can not find any problems.

Question though. What is the TIPM?

I'll post what I find out.

Dave
Williams Bay WI
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post #5 of 46 (permalink) Old 07-31-2011, 07:04 PM
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Quote:
Originally Posted by DavidWI View Post
Question though. What is the TIPM?
TIPM = Totally Integrated Power Module

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post #6 of 46 (permalink) Old 08-02-2011, 03:27 PM
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Just heard from my dealer in WI where I had the Jeep Commander towed. The failure to start was caused by corrosion on the starter connection. This is very similar to the other member's outcome. Why it shows Transmission Over Temp on the panel is anyones quess but I plan to question the mechanic about it. Did not yet drive the Jeep or see how this theory holds up.
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post #7 of 46 (permalink) Old 08-24-2011, 06:56 PM
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Wow, this is exactly what my wife has been dealing with all the way down to the "Transmission over Temp" message. 2007 3.7 L w/ almost 75K miles.

It started 3 months ago, we had it towed to the dealer and they sat on it for 1 day and couldn't replicate the issue. Then a month passed with no problems until it happened again and I sent it to my local mechanic and he couldn't replicate the issue so he sat on it for a whole week trying to start it once or twice a day! (we were on vacation). I had already done a little research about the starter terminals and requested he "clean" the terminals on or connecting to the starter and he did. So I thought we were set, but...almost exactly one month later its back.

It looks like my best bet is to take it back to the dealer. How much should we look to spend to fix the issue? Should I just start w/ the connecter between the starter and TIPM or if it will only be another few bucks are there multiple connectors and/or wires to replace that will almost certainly correct the issue?
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post #8 of 46 (permalink) Old 08-24-2011, 09:19 PM
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The harness that attaches to the starter is a replaceable service part.

As you have found, cleaning the terminals can buy some time but usually the connector has been overheated and a subsequent failure will occur.

Once the harness has been exchanged and the starter terminals thoroughly cleaned reassemble using di-electric grease on the terminals.
This will prevent moisture from causing a replay a few years from now.

Rob
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post #9 of 46 (permalink) Old 08-25-2011, 12:00 PM
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Good looking out, Robby. I appreciate it.
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post #10 of 46 (permalink) Old 08-30-2011, 08:32 AM
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Now, not to throw another theory into the ring, but there is a tsb out there that is for random no starts and lights on in the dash. It has do do with the front controller module flaking out. I can look it up again if someone is interested. In short, it flakes out and loses communication with the rest of the CAN bus system. This is a problem because its kind ofo th "gateway" so to speak that every other module relies on. So when you turn the key, the pcm, or steering column module...not sure which off the top of my head... tells the front controller module to send power to the starter relay. If its sleeping, she's not going to start.
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