One problem related to automatic stability control (asc) has been reported for the 2008 Jeep Wrangler. The most recently reported issues are listed below.
I can't figure out what causes the problem but sometimes when I hit a bump in the road (sometimes its a tiny bump even) at varying speeds the Jeep will start jumping up and down out of control - its so bad that it will jump me off of the road. The only way to get it to stop jumping is to come to a complete stop and then start driving again.