Tire pressure monitoring system
Function of the tire pressure monitoring sys‐
tem
&
DANGER Risk of accident due to incor‐
rect tire pressure
Every tire, including the spare (if provided),
should be checked when cold at least once a
month and inflated to the pressure recom‐
mended by the vehicle manufacturer (see
Tire and Loading Information placard on the
B-pillar on the driver’s side or the tire pres‐
sure label on the inside of the fuel filler flap
of your vehicle). If your vehicle has tires of a
different size than the size indicated on the
Tire and Loading Information placard or the
tire pressure table, you need to determine
the proper tire pressure for those tires.
As an added safety feature, your vehicle has
been equipped with a tire pressure monitor‐
ing system (TPMS) that illuminates a low tire
pressure indicator lamp when one or more of
your tires are significantly underinflated.
Accordingly, if the low tire pressure indicator
lamp lights up, you should stop and check
your tires as soon as possible, and inflate
them to the proper pressure. Driving on a
significantly underinflated tire causes the tire
to overheat and can lead to tire failure.
Underinflation also increases fuel consump‐
tion and reduces tire tread life, and may
affect the vehicle's handling and braking abil‐
ity. Please note that the TPMS is not a substi‐
tute for proper tire maintenance, and it is the
driver's responsibility to maintain correct tire
pressure, even if underinflation has not
reached the level to trigger illumination of
the TPMS low tire pressure indicator lamp.
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate when
the system is not operating properly. The
TPMS malfunction indicator is combined with
the low tire pressure indicator lamp. When
the system detects a malfunction, the indica‐
tor lamp will flash for approximately a minute
and then remain continuously illuminated.
This sequence will continue upon subsequent
vehicle start-ups as long as the malfunction
exists.
When the malfunction indicator is illumina‐
ted, the system may not be able to detect or
signal low tire pressure as intended. TPMS
malfunctions may occur for a variety of rea‐
sons, including the installation of incompati‐
ble replacement or alternate tires or wheels
on the vehicle that prevent the TPMS from
functioning properly.
Always check the TPMS malfunction warning
lamp after replacing one or more tires or
wheels on your vehicle to ensure that the
replacement or alternate tires and wheels
allow the TPMS to continue to function prop‐
erly.
The system checks the tire pressure and the tire
temperature of the tires installed on the vehicle
by means of a tire pressure sensor.
New tire pressure sensor, e.g. in winter tires, are
automatically taught-in during the first journey
they are used.
The tire pressure and the tire temperature
appear in the multifunction display
(
/
page 299).
298 Wheels and tires
Summary of Contents for A-Class 2020
Page 7: ......
Page 8: ...Left hand drive vehicles 6 At a glance Cockpit ...
Page 10: ...Q Electric parking brake 155 R Light switch 112 8 At a glance Cockpit ...
Page 11: ......
Page 12: ...Instrument Display standard 10 At a glance Warning and indicator lamps ...
Page 14: ...12 At a glance Overhead control panel ...
Page 16: ...14 At a glance Door control panel and seat adjustment ...
