Causes For Defective Displays - Renkforce SB-E17 Notice D'emploi

b) Causes for Defective Displays
In certain situations, the ultrasound measuring principle does not work reliably.
This is the case, e.g. at slight drooping, rounded objects, soft objects (that absorb ultrasound waves) or
heavy rain.
Other causes for defective displays:
• Snowfall
• Dirty sensors
• Iced-over sensors
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