Nav / On board monitor with no display - help

[X5 Meister]

Started up the car just fine and it seems that the nav display is getting power since it sort of "illuminates" but nothing at all comes up. The radio still works and I can cycle through aux / radio / cd, etc. Just nothing on the display. When I press the right knob that normally turns the nav display on (when it's off), nothing happens. Any ideas guys?

[sarb]

i would try disconnecting the battery about 15 mins, that fixed my 2002 mk3 i had same problem i am sure other will chime in....

[X5 Meister]

Did you disconnect from the actual battery in the trunk or the jump terminal in the hood?

[killcrap]

Originally Posted by X5 Meister

Did you disconnect from the actual battery in the trunk or the jump terminal in the hood?

Disconnecting the 19mm nut at the Jump Terminal only disconnects the power going to the Starter and Alternator. Remove the fuse for the Navigation Computer, and re-insert. Your symptoms point to a failed Navigation Computer.

[X5 Meister]

Thanks for the great info guys. I put a lot of time into the board and it's always a great feeling when I get some pro responses in return.

When you say "failed" you mean totally crapped out or just blown fuse (do you know which fuse off hand... is it one in the glovebox or the trunk)? What could have caused it?

Originally Posted by killcrap

Disconnecting the 19mm nut at the Jump Terminal only disconnects the power going to the Starter and Alternator. Remove the fuse for the Navigation Computer, and re-insert. Your symptoms point to a failed Navigation Computer.

[killcrap]

Originally Posted by X5 Meister

Thanks for the great info guys. I put a lot of time into the board and it's always a great feeling when I get some pro responses in return.

When you say "failed" you mean totally crapped out or just blown fuse (do you know which fuse off hand... is it one in the glovebox or the trunk)? What could have caused it?

On vehicles equipped with Navigation, the Navigation computer generates the RGB signals, and the item menus on the Board Monitor. A failure of the remote turn on(cold solder) is usually to blame. The fuse is located in the Right Trunk Panel. Fuse #72 for vehicles from SOP to 03/2002 and Fuse #75 for vehicles From 03/2002

[sarb]

in the trunk

[X5 Meister]

Man you know your shit.

[X5 Meister]

No luck. I pulled fuse 75 and nothing. The schematic shows fuses 73 and 75 for the nav computer. So I pulled and replaced both. Still nothing. Any ideas?

[kishg]

happened in ours and unhooking battery seemed to reset it.