On the Rubicon models there is a software update for the Powertrain Control Module (PCM) to correct a condition where the differential lockers disengage or unlock when the key is turned off and then back on. The differential lockers will remain locked with the new software when the ignition key is cycled.
PCM software update to address problems with differential lockers on Jeep Wrangler
Average mileage: (–)
1 model year affected: 2005
1 person reported this problem
0 people shared problem details
My 1994 Jeep Wrangler 4.0 will run fine then all of a sudden will crank but won't start. After...
Does it have anything to do with my gas cap?
"False" trouble codes may cause erroneous illumination of the Check Engine Light. Updating the...
engine starts, runs a few seconds then dies.