251 Operation
Tires and wheels
If you wish to cancel activation:
Press the
ç
button.
If the following message appears in the
multifunction display field:
REACTIVATE TIRE
PRES. MONITOR
or
TIRE PRES.
CHECK TIRES!
Check the tire inflation pressures and
correct them if necessary.
Reactivate the tire inflation pressure
monitor.
Rotating wheels
On vehicles with the same wheel size all
around, wheels can be rotated every 3000
to 6000 miles (5000 to 10 000 km), or
sooner if necessary, according to the de-
gree of tire wear. The same direction of tire
rotation must be retained.
Rotate the wheels before the characteris-
tic tire wear pattern becomes visible
(shoulder wear on front wheels and tread
center wear on rear wheels).
Thoroughly clean the inner side of the
wheels after each rotation. Check and en-
sure proper tire inflation pressure. It is
necessary to activate the tire inflation
pressure monitor*.Warning!
G
Rotate front and rear wheels only if they are
of the same size.
!If your vehicle is equipped with a tire in-
flation pressure monitor*, there are
electronic components built into the
wheel.
Do not use mounting tools in the area
of the valve as they could damage the
electronic components.
To prevent damage or incorrect instal-
lation, have the tires changed at an au-
thorized Mercedes-Benz Center.Warning!
G
Have the tightening torque checked after
changing a wheel. Wheels could become
loose if not tightened with a torque of
110 ft.lb. (150 Nm).
Use only genuine Mercedes-Benz wheel
bolts specified for your vehicle's rims.
373 Index
Switching off
Automatic central locking (control
system) 139
Engine 51
ESP 75
Hazard warning flasher 111
Headlamps 50
Switching on
Automatic central locking (control
system) 139
ESP 75
Front fog lamps 110
Front lamps 108
Hazard warning flasher 111
Headlamps 46
High beams 111
Parking lamps 108
Rear fog lamp 110
Windshield wipers 47
Symbol (Distronic*)
Distance warning function* 128
Synchronizing
Power windows 172
Sliding/pop-up roof 175T
Tachometer 23, 115
Overspeed range 115
Tail lamps
Cleaning 258
Replacing bulbs 303, 305
Tar stains 257
Tele Aid 209
Emergency calls 211
Information 214
Initiating an emergency call
manually 212
Messages in display 293
Remote door unlock 216
Roadside Assistance 213
Stolen vehicle tracking services 217
System self-check 210
Upgrade signals 215
Tele Aid System 351
Telematics* 351
Telephone* 24, 208
Answering a call 126
Dialing a number from the phone
book 126
Ending a call 126
Hands-free microphone 27Loading phone book* 126
Messages in display 294
Operating 125
Redialing 127
Temperature
Display mode 134
Setting interior temperature 160
Setting units in display 134
Tires 248
Tie-down hooks (Trunk) 198
Tightening torque 351
Tightening torque (Wheel bolts) 312
Tire inflation pressure
Checking 236, 247
Tire speed rating 229, 351
Tire traction 229
Tires 246, 345
Direction of rotation 247
Driving instructions 228
Messages in display 291
Retreads 246
Service life 247
Temperature 248
Tread depth 252
Wear pattern 251
Winter 252
