Lexus RX 450h 2014 Owner's Manual page 217

2-2. Instrument cluster
NOTICE
To prevent damage to components
■
Do not place anything on the head-up display opening.
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216
If an object falls into the opening of the
●
head-up display, remove it immediately.
Also, avoid spilling water or other liquids
near the head-up display opening as this
may cause mechanical damage.