Mercedes-Benz S-Class Saloon W223 2021 Owner's Manual page 530

528 Display messages and warning/indicator lamps
Display messages
Anti-theft alarm system
Malfunction
Ambient light warning sup-
port inoperative
¥
Top up washer fluid
Possible causes/consequences and
& DANGER Risk of exhaust gas poisoning
Combustion engines emit poisonous exhaust gases such as carbon monoxide. Exhaust gases can enter the vehicle
interior if the boot lid is open when the engine is running, especially if the vehicle is in motion.
Always switch off the engine before opening the boot lid.
#
Never drive with the boot lid open.
#
Close the boot lid.
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* The anti-theft alarm system is malfunctioning.
Consult a qualified specialist workshop.
#
* The ambient lighting may not provide full visual warning support.
Lock the vehicle and unlock it again after a few minutes.
#
If the display message appears regularly, contact a qualified specialist workshop.
#
* The washer fluid level in the washer fluid reservoir has dropped below the minimum.
Top up the washer fluid (
#
Solutions
M
page 363).
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P223 0288 02