Re: New Member with auto trans shifting problems
Welcome to the garage.
Not familiar with the liberty, which transmission does it have?
Since you have a check engine light, you will need to have it scanned to see which fault code is set. You could do the key dance, but most probably will only get the P0700 code, which is a general transmission problem code. The TCM will need to be scanned to get the code which is set there and go from there.
For the keydance, do the following: ignition switch off/run three times and at the third time, leave it in run. The odometer will show DONE when no fault set, or a fault code(s).