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Home >> BMW >> 2004 >> 645Ci 2D Convertible, Standard >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instruments - Si Techniques >> Head-Up Display E60, E61, E63, E64 >> Brief Description Of Components >> Button For Switching Head-Up Display On And Off >> How It Works

How It Works

The button has 2 functions that are activated by pressing the button for different lengths of time.

Press button Function
Short less than 10 seconds Head-up display switched on or off
Long more than 10 seconds Test functions are activated. This mode is intended for service staff (e.g. system test)

As soon as the first test function is displayed, other test functions can be activated by briefly pressing the button.

NOTE: Reactivating the head-up display  Press the button again and hold it for longer than 2 seconds to reactivate information relevant to the driver.
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