I recently purchased a 2011 E350 Cabriolet and need help calibrating the compass. The car is from a dealer in California and I'm in North Carolina so the zones are pretty far off. Anyway, the manual mentions a button to press to reset the compass but no button seems to exist. I have three Homelink buttons. Period. There is a hole near the map light where the manual shows the button. Any ideas or prior experience?

Thanks!