Mercedes-Benz C-Class Saloon 2022 Owner's Manual page 173

170 Driving and parking
Notes on the acoustic vehicle alerting system:
The sound generator generates speed-depend-
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ent vehicle noise emissions at a speed of up
to around 30 km/h when the vehicle is driving
both forwards and in reverse.
This helps other road users, particularly
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pedestrians and cyclists, to hear your vehicle
better.
When you drive at speeds above 20 km/h the
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acoustic vehicle alerting system will gradually
switch off.
The sound generator will be off when the vehi-
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cle is stationary.
▌Manually disconnecting the high-voltage on-
board electrical system
& DANGER Risk of death and fire due to
modified and/or damaged components of
the high-voltage on-board electrical sys-
tem
The vehicle's high-voltage on-board electrical
system is under high voltage. If you modify
component parts in the vehicle's high-voltage
on-board electrical system or touch damaged
component parts, you may be electrocuted. In
addition, modified and/or damaged compo-
nents may cause a fire.
In the event of an accident or impact to the
vehicle underbody, components of the high-
voltage electrical system may be damaged
although the damage is not visible.
Never make any modifications to the
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high-voltage on-board electrical system.
Do not switch on or use the vehicle if its
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high-voltage on-board electrical system
components have been modified or dam-
aged.
Never touch damaged components of
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the high-voltage on-board electrical sys-
tem.
After an accident, do not touch any com-
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ponents of the high-voltage on-board
electrical system.
After an accident, have the vehicle trans-
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ported away.
Have the components of the high-voltage
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on-board electrical system checked at a
qualified specialist workshop and
replaced if necessary.
Requirements
Only disconnect the high-voltage on-board electri-
cal system manually in the following situations:
The 6 restraint system warning lamp lights
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up in the driver's display, e.g. after an acci-
dent.
The vehicle is badly damaged, e.g. after an
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accident, and the restraint system compo-
nents have not been triggered.