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Originally Posted by BMW_X5_FAN
KiwiJochen, thanks for your reply. When you say replace the cap, do you mean the relays located in the boot with the fuses? I'm not 100% sure that the system is rebooting... the screen just flickers. Thanks.
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Caps = capacitors inside the nav unit
Relay = Unloader relay located in the boot near the main fuse block.
But a flickering screen is a screen problem, not a nav problem.
The high-voltage circuit in the screen is failling - happens when they get old.
There are some places that can repair failling LCD screens - use goolge to find them.
Or replace the screen with another one.