Mercedes-Benz C-Class 2014 Owner's Manual page 273

Hybrid operation
270
situations your vehicle may not be heard by
other road users. This is the case, for exam-
ple, when you are parking and your vehicle is
not seen by other road users.
This requires you to adopt a particularly antic-
ipatory driving style, as it is necessary to allow
for the possibility that other road users may
behave unpredictably.