One problem related to turn signal switch has been reported for the 2008 Jeep Wrangler. The most recently reported issues are listed below.
2008 Wrangler 2 door 4x4. Around 28,000 miles the turn signal quit working with no warning. Dealer replaced the turn signal switch. Noticed that same day that the turn signal would not stop after making a left turn. Dealer had to replace it a 2nd time.