PCM Software Update Available to Correct Various Driveability Issues on Jeep Patriot

Our technicians tell us that various dirveability and Check Engine Light issues can be corrected by updating the powertrain control module (PCM) software.

RepairPal Verified
Average mileage: 98,000 (91,000–105,000)
3 model years affected: 2007, 2008, 2009
6 people reported this problem
3 people shared problem details
2008 Jeep Patriot91,000
jeep runs rough in gear not in park or nuetral and when at a stop sign or light, the motor has a shake. the P540 code is on
2009 Jeep Patriot105,000
Just the engine ligth turn on and the mechanical said the pcm is not working properly
When i stop it doesn't want to move. If i shut it off for a few minutes and start it back up its ok for a short while, then it happens again.
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