Navigation system on my 2003 bmw 745li says to insert cd when it isready inserted and I removed and inserted it multiple times and the same message shows up "insert cd"

SOURCE: 2003 BMW CI Convertable Radio/CD Problem

Had the same problem with my '03 330xi. Navigation worked fine but radio and CD did not work at all. I opened the fuse box located in the glove compartment to check the three fuses associated with the navigation system and radio. #7, #39, and #41. All three fuses were intact so I put them back in. I then put the key into the ignition, turned it to position 2 and miraculously the radio came to life. I guess it acted as some type of reset?

SOURCE: AVIC-N3

Hi check your navigation disc for dust, dirt, damage.
if disc is good, you might like to try running a dvd cleaner in the unit, the avic has a fan that sucks in dust from the car, and this coates the cd lens.

we can service the unit for £45.00 plus return postage @ £10.00 (uk mainland)
www.blueice-electronics.co.uk

Regards

Mark

SOURCE: Insert SIM Card message in nokia 6080 though SIM is inserted

May be its detecting your sim card properly. Check your sim card in another handset. Verify if its the propbelm with sim card not your handset.

SOURCE: Xplode cdx-gt460u CD Reset Error

REMOVE THE FACE PLATE THERE SHOULD BE A RESET BUTTON ON THE FRONT OF THE RADIO PUSH THAT AND TRY AGAIN IF THAT DOESNT WORK THEN PULL THE RADIO AND DISCONNECT FROM POWER 4 A LIL BIT AND THAT MAY WORK

SOURCE: lincoln navigation dvd

On my '06 Navigator the navigation dvd goes in a slot on the console to the left of the passenger's feet. There's a removable panel.

On a side note... does anyone have a newer dvd for Canada? The one that came with my vehicle is compile for the Quebec (*gasp*) market and is outdated.