Mercedes-Benz S-Class Saloon 2021 Owner's Manual page 417

414 Maintenance and care
414
Frequent operation in mountainous terrain or
R
on poor road surfaces
When the engine is o en le idling for long
R
periods
Operation in particularly dusty conditions
R
and/or if air-recirculation mode is frequently
used
In these or similar operating conditions, have the
interior air lter, air lter, engine oil and oil lter,
for example, changed more frequently. The tyres
must be checked more frequently if the vehicle is
operated under increased loads. Further informa-
tion can be obtained at a quali ed specialist work-
shop.
Batter ery disconnection per Batt y disconnection periods iods
The ASSYST PLUS service interval display can cal-
culate the service due date only when the battery
is connected.
Display and note down the service due date
#
on the driver display before disconnecting the
battery ( page 413).
/
Engine com Engine compar partment tment
A A ctiv ctive bonne e bonnet (pedes t (pedestr trian prot ian protection) ection)
Oper Operation of t ation of the activ he active bonne e bonnet (pedes t (pedestr trian prot
tion) tion)
In certain accident situations, the actuation of the
active bonnet reduces the risk of injury to pedes-
trians. The rear area of the bonnet is raised by
approximately 80 mm.
A er being triggered, the active bonnet remains in
the raised position. Limited visibility due to the
raised bonnet cannot be ruled out.
A er the active bonnet has been actuated, pedes-
trian protection may be limited.
Have the full functionality of the active bonnet
restored immediately in a quali ed specialist
workshop.
If necessary, adjust your seat position and drive
carefully to a quali ed specialist workshop. If a
safe continued journey is not possible, contact a
quali ed specialist workshop.
Opening and closing the bonnet Opening and closing t
& W W ARNING
ARNING Risk of accident due to driving
with the bonnet unlocked
ian protec- ec-
The bonnet may open and block your view.
Never release the bonnet when driving.
#
Before every trip, ensure that the engine
#
bonnet is locked.
& W W ARNING
ARNING Risk of accident and injury
when opening and closing the bonnet
The bonnet may suddenly drop into the end
position.
There is a risk of injury for anyone in the
engine bonnet's range of movement.
Do not open or close the bonnet if there
#
is a person in the bonnet's range of
movement.
he bonnet