When you contact the 800 number in you owners manual, a case is started on your CF. The info is passed onto your local dealer, and also to the district rep. Before the case is closed the vehicle is brought in to fix the problem if one exists. The dealer then must contact the district rep, and also DC and update on any fix. You can ask for your district rep to look at your vehicle, or even a tech inspector.. A little persistance and polite resolve should get things accomplished.