The Drowsiness Monitor has system-related limitations. The following conditions can limit the function of the Drowsiness Monitor, or
prevent it from working altogether:
—Speeds below around 60 km/h (around 37 mph).
—Speeds above around 130 km/h (around 80 mph).
—Twisting roads.
—Poor roads.
—Adverse weather conditions.
—Road works.
—Sporty driving style.
—Towing a heavy or long trailer (→ Trailer towing).
—The driver is heavily distracted.
The Drowsiness Monitor has been developed for use only while driving on motorways and good main roads.
Microsleep
No urgent warning is issued for microsleep.
Resetting the Drowsiness Monitor
The Drowsiness Monitor is reset in the following situations:
—The ignition is switched off.
—The driver seat belt is unfastened and the driver door is open.
—The vehicle has been stationary for longer than around 30 minutes.
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