Mercedes-Benz S-CLASS 2017 Operator's Manual page 354

Tire pressure
352
Radio type approval for the tire pres-
sure monitor
Country Radio type approval number
USA FCC ID: MRXMW2433A
FCC ID: MRXGG4
FCC ID: MRXMC34MA4
Canada IC: 2546A-MW2433A
IC: 2546A-GG4
IC: 2546A-MC34MA4
Tire pressure loss warning system
(Canada only)
General notes
While the vehicle is in motion, the tire pressure
loss warning system monitors the set tire pres-
sure using the rotational speed of the wheels.
This enables the system to detect significant
pressure loss in a tire. If the speed of rotation of
a wheel changes as a result of a loss of pressure,
a corresponding warning message will appear in
the multifunction display.
You can recognize the tire pressure loss warning
Run Flat Indicator Active Press
by the
'OK' to Restart
the Service menu of the multifunction display.
Information on the message display can be
found in the "Restarting the tire pressure loss
warning system" section (
Important safety notes
The tire pressure warning system does not warn
you of an incorrectly set tire pressure. Observe
the notes on the recommended tire pressure
( page 346).
Y
The tire pressure loss warning does not replace
the need to regularly check the tire pressure. An
even loss of pressure on several tires at the
same time cannot be detected by the tire pres-
sure loss warning system.
The tire pressure monitor is not able to warn you
of a sudden loss of pressure, e.g. if the tire is
penetrated by a foreign object. In the event of a
sudden loss of pressure, bring the vehicle to a
halt by braking carefully. Avoid abrupt steering
movements.
message which appears in
page 352).
Y
The function of the tire pressure loss warning
system is limited or delayed if:
snow chains are mounted on your vehicle's
R
tires.
road conditions are wintry.
R
you are driving on sand or gravel.
R
you adopt a very sporty driving style (corner-
R
ing at high speeds or driving with high rates of
acceleration).
you are driving with a heavy load (in the vehi-
R
cle or on the roof).
Restarting the tire pressure loss warn-
ing system
Restart the tire pressure loss warning system if
you have:
changed the tire pressure
R
changed the wheels or tires
R
mounted new wheels or tires
R
Before restarting, make sure that the tire
X
pressures are set properly on all four tires for
the respective operating conditions.
The recommended tire pressure can be found
on the Tire and Loading Information placard
on the B-pillar on the driver's side. Addition-
ally, a tire pressure table is attached to the
fuel filler flap. The tire pressure loss warning
system can only give reliable warnings if you
have set the correct tire pressure. If an incor-
rect tire pressure is set, these incorrect val-
ues will be monitored.
Also observe the notes in the section on tire
X
pressures ( page 346).
Y
Make sure that the SmartKey is in position 2
X
in the ignition lock (
Use ò on the steering wheel to call up the
X
list of menus.
Press 9 or : on the steering wheel to
X
select the Service
Press the a button.
X
Press 9 or : to select
X
sure.
Press the a button.
X
The Run Flat Indicator ActivePress
'OK' to Restart message appears in the
multifunction display.
page 145).
Y
menu.
Tire Pres‐