While I was hopeful that it was just the bulb when the passenger side headlight recently went out on my 2008 Patriot I was not so lucky. The local Mechanic almost immediately laid the blame on the TIPM (Total Integrated Power Module) and hit me with the replacement price YIKES! upwards of $700 was more or less out of the question! I suppose that luckily for me that mechanic was not prepared to do the work. I ended up calling around and one dealer informed me that a "reconditioned" unit could be installed for $500. Finally I contacted a local Automotive Electronics company and was told a $78 reprogram "could" help, biting the bullet I took the Jeep there and an hour and a half later the service manager came in and informed me that the problem was a broken ground wire to that headlight, difficult to reach but the final $148 for diagnostic and repair was better than it could have been. Had I just let the dealer change the TIPM I would have had to pay for it AND still would have needed the grounding lug repaired. Moral of the story, always let the professionals diagnose Electrical problems.