One problem related to defogger heater has been reported for the 2008 Jeep Liberty. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Jeep Liberty based on all problems reported for the 2008 Liberty.
My Jeep Liberty does not defog properly. At outdoor temps below -13 c. It begins to ice up and will get to the point where you cannot see out of the side windows. It has been into the dealer six times. The last time they said they had replaced the entire heating system. This did not correct the problem. The engineers at Chrysler canada told me the system is extremely sensitive to moisture; so if there are wet boots or a hockey bag in the vehicle the system will not function properly. Considering I live in northern ontario this sounds a little strange to me. I did keep the recorded message from Chrysler costumer service.