I have a problem with the stock nav system.
Everytime the radio twin tuner switches from one tuner to another to give better reception i get a loud click from the lhs door speakers this can happen 2 or 3 times a second if i'm in an area with poor reception. Ditto when i turn it off.
Switched back to the stock radio without nav and the problem went away.
Changed nav unit under warrenty fitted new one and the problem is back!
Goes away again with the stock radio.
Dealer says it probably isn't the nav system because of the same fault with 2 units.
Ditto it probably isn't the car or amp as the problem isn't apparent with the stock radio.
It goes into be checked out on 5th jan but in the mean time has anyone had a similar problem.