319 Operation
Tires and wheels
Switch on the ignition (
page 34).
Press buttonè orÿ on the mul-
tifunction steering wheel repeatedly 
until the standard display menu ap-
pears in the multifunction display 
(page 158).
Press the j or k button until the 
current inflation pressures for each tire 
appear in the multifunction display.iPossible differences between the read-
ings of a tire inflation pressure gauge of 
an air hose, e.g. gas station equipment, 
and the vehicle’s control system can 
occur. The readings issued by the con-
trol system are more precise.
Warning!
G
When the tire pressure monitoring system* 
warning light is lit, one or more of your tires 
is significantly under-inflated. You should 
stop and check your tires as soon as possi-
ble, and inflate them to the proper pressure 
as indicated on the vehicle’s tire information 
placard. Driving on a significantly under-in-
flated tire causes the tire to overheat and 
can lead to tire failure. Under-inflation also 
reduces fuel efficiency and tire tread life, 
and may affect the vehicle’s handling and 
stopping ability. Each tire, including the 
spare, should be checked monthly when 
cold and set to the recommended inflation 
pressure as specified in the vehicle placard 
and Operator’s Manual.iThe recommended tire inflation pres-
sures for your vehicle can be found on 
the placard of the driver’s door B-pillar 
or the inside of the fuel filler flap, not in 
the Operator’s Manual.
Warning!
G
The tire pressure monitoring system* does 
not indicate a warning for wrongly selected 
inflation pressures. Always adjust tire infla-
tion pressure according to the placard of the 
driver’s door B-pillar or the inside of the fuel 
filler flap.
The tire pressure monitoring system* is not 
able to issue a warning due to a sudden dra-
matic loss of pressure (e.g. tire blowout 
caused by a foreign object). In this case 
bring the vehicle to a halt by carefully apply-
ing the brakes and avoiding abrupt steering 
maneuvers.iOperating radio transmission equip-
ment (e.g. wireless headsets, two-way 
radios) in or near the vehicle could 
cause the tire pressure monitoring sys-
tem* to malfunction. 
464 Technical termsSRS
(S
upplemental R
estraint S
ystem)
Seat belts, emergency tensioning de-
vice and air bags. Though independent 
systems, they are closely interfaced to 
provide effective occupant protection.
Tele Aid System
(T
elematic A
larm I
dentification on D
e-
mand)
The Tele Aid system consists of three 
types of response: automatic and man-
ual emergency, roadside assistance 
and information. Tele Aid is initially ac-
tivated by completing a subscriber 
agreement and placing an acquain-
tance call.
The Tele Aid system is operational pro-
vided that the vehicle’s battery is 
charged, properly connected, not dam-
aged and cellular and GPS coverage is 
available.
Telematics*
A combination of the terms “telecom-
munications” and “informatics”.Tightening torque
Force times lever arm (e.g. a lug 
wrench) with which threaded fasteners 
such as wheel bolts are tightened.
TIN
(T
ire I
dentification N
umber)
(
page 334)
Tire load rating
(page 334)
Tire ply composition and material used
(page 334)
Tire speed rating
(page 335)
Traction
(page 335)
Tread
(page 335)
Treadwear indicators
(page 335)Uniform Tire Quality Grading Standards
(
page 335)
Vehicle capacity weight
(page 335)
Vehicle level control
The ground clearance of the vehicle is 
automatically controlled according to a 
selected setting and speed.The driver 
can set the ground clearance manually 
for example on very rough roads.
Vehicle maximum load on the tire
(page 335)
VIN
(Vehicle I
dentification N
umber)
The number set by the manufacturer 
and placed on the body to uniquely 
identify each vehicle produced.
Voice control system*
Voice control system for car phones, 
portable cell phones and audio sys-
tems (radio, CD, etc.).