Recommended Tire Pressure; Tire Pressure Monitoring System - Volvo S90 2019 Owner's Manual

Recommended tire pressure

The tire pressure placard on the driver's side
B pillar (between the front and the rear door)
indicates tire pressure for different loads and
speed conditions.
The decal specifies the designation for the fac-
tory-mounted tires on the vehicle, as well as
load limits and inflation pressures.
Related information
Checking tire pressure (p. 507)
•
Approved tire pressure (p. 621)
•
6 Tire Pressure Monitoring System (TPMS)
7 Not available on all models.

Tire pressure monitoring system*

The tire pressure monitoring system
vides a warning symbol in the instrument
panel if pressure is too low in one or more
tires.
This symbol illuminates to indicate
low inflation pressure.
If there is a system malfunction, the
inflation pressure warning symbol
will flash for approximately one minute and
then glow steadily.
System description
The tire pressure monitoring system measures
differences in rotational speed between the
wheels through the ABS system to determine
if the tires are properly inflated. If inflation
pressure in a tire is too low, its diameter (and
consequently its rotational speed) changes. By
comparing the tires with each other, the sys-
tem can determine if the pressure in one or
more tires is too low.
General information about the tire pressure
monitoring system
In the following description, the tire monitor-
ing system is generally referred to as TPMS.
Each tire, including the spare (if provided)
should be checked monthly when cold and
inflated to the inflation pressure recom-
mended by the vehicle manufacturer on the
vehicle placard or tire inflation pressure label.
6 pro-
(If your vehicle has tires of a different size than
the size indicated on the vehicle placard or tire
inflation pressure label, you should determine
the proper tire inflation pressure for those
tires.)
As an added safety feature, your vehicle has
been equipped with a tire pressure monitoring
system (TPMS) that illuminates a low tire
pressure telltale when one or more of your
tires is significantly under-inflated. Accord-
ingly, when the low tire pressure telltale illumi-
nates, you should stop and check your tires as
soon as possible, and inflate them to the
proper pressure.
Driving on a significantly under-inflated tire
causes the tire to overheat and can lead to tire
failure. Under-inflation also reduces fuel effi-
ciency and tire tread life, and may affect the
vehicle's handling and stopping ability. Please
note that the TPMS is not a substitute for
proper tire maintenance, and it is the driver's
responsibility to maintain correct tire pressure,
even if under-inflation has not reached the
level to trigger illumination of the TPMS low
tire pressure telltale.
7
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate when
WHEELS AND TIRES
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509
* Option/accessory.