Mercedes-Benz C-Class Convertible 2021 Operator's Manual page 207

Display Content
R
To select a setting: swipe upwards or down‐
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wards on the left-hand Touch Control.
Press the left-hand Touch Control.
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To adjust a value: swipe upwards or down‐
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wards on the left-hand Touch Control.
Press the left-hand Touch Control.
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Switching the Head-up Display on/off
Press button 1.
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Instrument Display and on-board computer 205