I have a 2004 Subaru Liberty 2.5i and ran my battery down. I replaced the battery. When I drove the car there was an error message ER IU and the cruise control was deactivated. An Aussie Subaru technician posted on a website that I should disconnect the negative terminal for 1 minute and reconnect again and that would fix the problem. I checked with my mechanic first and then did this. The problem was fixed. I had heard about people replacing computers to fix the problem so I was grateful to find such an easy cheap fix. Cheers
