Hi, My B8 A4 saloon cannot find any satellites for it's navigation. The car has MMI 3G fitted, with the little cursor thing on the main MMI knob. I am wondering if anyone would be able to help please? So far, I've done the following: - Checked for fault codes (none present) - Checked for any signs of visible damage to the shark fin - Checked the 'Nav Info' page on MMI - shows 0 satellites available - Connected a 'hockey puck' type antenna to the back of the 5F unit to test With regard to the hockey puck type antenna, it was borrowed from my A2 that has a retrofitted MK2 RNSE. I connected it directly to the back of the 5F unit in the A4 and drove for around 6 miles and 10 minutes with the antenna on the roof. It still showed 0 satellites. In the A2, it finds 5 satellites immediately when it is plugged back in. Some questions that I have are: - Do I need to drive further with the hockey puck type before it will find signal? - Is it possible/common for the 5F unit to be faulty? - Can I view any other data about the antenna or carry out checks on MMI that will help further? Any help would be appreciated. Many thanks, Matt.