2007 Compass Transmission Problem?

I have a 2007 Compass that has developed an issue with, I think, the transmission.

My father in law normally drives the car and told me today it wouldn't go over about 30mph and struggled to get there. I drove the car and noticed it. I also noticed the check engine light was on. On a lark, I disconnected the battery and took the car for a drive. It drove fine.

We drove it about 8 miles to the store. When we came out and left it was doing it again. I pulled over, disconnected the battery and all was fine again.

I haven't driven it again tonight, but I suspect it will act up again.

Is this a transmission issue or possibly a computer issue?

I also noticed the headlights acting strange. They would not turn off unless I turned the switch on and then back off. That got me to thinking maybe it was the computer.

Any insights would be greatly appreciated!


Gary

Go to Auto Zone or Advanced Auto and get a free ECU scan post the codes. As I use my own scanner I'm not sure what capabilities their scanner has. But it's free it's a good place to start.
You can call a few transmission shops and get a quote on a scan.
Get one with a good reputation.
If you know what you need G7 computer repair. They repair about all items on a jeep for $200.00 if mailed to them as it's the same unit it doesn't need reprogrammed.

Car started acting up again today and I was able to get a code. I have a U1146 code.