Page 239 of 376
239 Operation
Tires and wheels
Warning!
G
Have the tightening torque checked after
changing a wheel. Wheels could become
loose if not tightened with a torque of
97 lb-ft (130 Nm).
Use only genuine Mercedes-Benz wheel
bolts specified for your vehicle’s rims.
Page 310 of 376

310 Practical hintsFlat tireLowering the vehicle
Using the pump lever, open the lower-
ing screw on the jack approximately
one turn (
page 308).
The vehicle is resting fully on its own
weight.
Remove the jack.
After use, disassemble pump handle
(page 308) and store jack in the des-
ignated storage compartment
(page 284).
1-5 Wheel bolts
Tighten the five wheel bolts evenly, fol-
lowing the diagonal sequence illustrat-
ed (1 to 5), until all bolts are tight.
Observe a tightening torque of 97 lb-ft
(130 Nm).
Press the jack piston in again and close
the lowering screw. Store the jack
(page 284) and the other vehicle
tools (
page 283).
After changing the wheel, secure the
damaged wheel on the spare wheel
mounting bracket (
page 286). Make
sure the wheel cannot come loose.
Check the tire inflation pressure and
correct it if necessary.
A table with the tire pressure values for
your vehicle is located on the fuel filler
flap.
Warning!
G
Have the tightening torque checked after
changing a wheel as soon as possible. The
wheels could come loose if they are not
tightened to a torque of 97 lb-ft (130 Nm).
Page 347 of 376

347 Technical terms
Tele Aid System
(T
elematic A
larm I
dentification on
D
emand)
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.Tire speed rating
Part of tire designation; indicates the
speed range for which a tire is ap-
proved.
Traction
Force exerted by the vehicle on the
road via the tires.
Transfer case
Speed of rotation/torque converter
that works together with the ->auto-
matic transmission. In the LOW mode
off-road position, the transfer case de-
creases the output rotational speed of
the ->automatic transmission by ap-
proximately half. This results in a corre-
sponding increase of torque on the
drive axles.
The vehicle then has nearly double the
driving force but drives only approxi-
mately half as fast.VIN
(V
ehicle 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.).
Page 371 of 376

371 Index
Tightening torque (Wheel bolts) 310
Time
Setting display mode 127
Time display mode
Setting 127
Tire inflation pressure
Checking 237
Tire speed rating 211, 347
Tire traction 211
Tires 236, 329
Direction of rotation 237
Driving instructions 210
Retreads 236
Rims and tires 329
Service life 237
Temperature 238
Temperature grades 341
Tread depth 240
Wear pattern 238
Winter 240Tools 283
Tow-away alarm 27, 83
Arming 83
Disarming 83
Disarming for transport 83
Tow-away alarm system
Canceling alarm 84
Towing eye, front 318
Towing eye, rear 318
Towing the vehicle 315
Stranded vehicle 318
Towing the vehicle - various problem
scenarios 317
Tracking services
For stolen vehicle 197
Traction 340, 347
Transfer case 145, 347
Gear range 145
Messages in the multifunction
display 146
Switching 145Transfer case differential lock
Switching on 150
Transmission gear selector lever 290
Unlocking manually 290
Transmission see Automatic transmission
Tread depth (tires) 240
Treadwear 340
Trip computer 136
Trip odometer
Resetting 113
Trunk see Cargo compartment
Turn signal lamps
Replacing bulbs 295, 296
Turn signals 23, 46
Additional in mirrors 295
Cleaning lenses 246
Front bulbs 295
Indicator lamps 25
Rear bulbs 296
Turning off
Engine 52