
Technical data
Capacities ...................................... 298
Emergency spare wheel ................. 294
Information .................................... 296
Tires/wheels ................................. 292
Vehicle data ................................... 303
TELEAID
Call priority .................................... 233
Emergency call .............................. 231
General notes ................................ 230
MB info call button ........................233
Roadside Assistance button .......... 232
Self-test ......................................... 230
System .......................................... 230
Vehicle Health Check .................... 233
Telephone
Accepting a call (multifunction
steering wheel) .............................. 174
Authorizing a mobile phone (con-
necting) ......................................... 221
Authorizing a mobile phone via
the device manager (connecting) ... 222
Connecting a mobile phone
(device manager) ........................... 222
Connecting a mobile phone (gen-
eral information) ............................ 221
Display message ............................ 205
Menu (on-board computer) ............ 173
Number from the phone book ........174
Redialing ........................................ 174
Rejecting/ending a call ................. 174
see also Digital Operator's Man-
ual ..................................................217
Temperature
Coolant .......................................... 168
Coolant (on-board computer,
Mercedes-AMG SLC 43) ................ 179
Engine oil (on-board computer,
Mercedes-AMG SLC 43) ................ 179
Outside temperature ......................167
Setting (climate control) ................ 111
Transmission oil (on-board com-
puter, Mercedes-AMG SLC 43) ...... 179
Timing (RACETIMER)......................... 180
Tire pressure
Calling up (on-board computer) ..... 274
Checking manually ........................ 273
Display message ............................ 201
Maximum ....................................... 273
Not reached (TIREFIT) .................... 256
Notes ............................................. 272
Reached (TIREFIT) .......................... 256
Recommended ............................... 270
Tire pressure loss warning sys-
tem
General notes ................................ 273
Important safety notes .................. 274
Restarting ...................................... 274
Tire pressure monitor
Checking the tire pressure elec-
tronically ........................................ 276
Function/notes .............................274
General notes ................................ 274
Important safety notes .................. 275
Radio type approval for the tire
pressure monitor ........................... 278
Restarting ...................................... 277
Warning lamp ................................. 216
Warning message .......................... 276
Tire-change tool kit........................... 252
TIREFIT kit.......................................... 254
Important safety notes .................. 254
Storage location ............................ 252
Tire pressure not reached .............. 256
Tire pressure reached .................... 256
Tires
Aspect ratio (definition) ................. 287
Average weight of the vehicle
occupants (definition) .................... 286
Bar (definition) ............................... 286
Changing a wheel .......................... 288
Characteristics .............................. 286
Checking ........................................ 267
Curb weight (definition) ................. 287
Definition of terms ......................... 286
Direction of rotation...................... 289
Display message ............................ 201
Distribution of the vehicle occu-
pants (definition) ............................ 288
DOT (Department of Transporta-
tion) (definition) ............................. 286
DOT, Tire Identification Number
(TIN) ............................................... 285
GAWR (Gross Axle Weight Rat-
ing) (definition) .............................. 287
18Index

Rim
This is the part of the wheel on which the tireis mounted.
GAWR (Gross Axle Weight Rating)
The GAWR is the maximum gross axle weightrating. The actual load on an axle must neverexceed the gross axle weight rating. The grossaxle weight rating can be found on the vehicleidentification plate on the B-pillar on the driv-er's side.
Speed rating
The speed rating is part of the tire identifica-tion. It specifies the speed range for which thetire is approved.
GVW (Gross Vehicle Weight)
The gross vehicle weight includes the weightof the vehicle including fuel, tools, the sparewheel, accessories installed, occupants, lug-gage and the drawbar noseweight, if applica-ble. The gross vehicle weight must not exceedthe gross vehicle weight rating GVWR as speci-fied on the vehicle identification plate on theB-pillar on the driver's side.
GVWR (Gross Vehicle Weight Rating)
The GVWR is the maximum permissible grossweight of a fully loaded vehicle (the weight ofthe vehicle including all accessories, occu-pants, fuel, luggage and the drawbar nose-weight, if applicable). The gross vehicle weightrating is specified on the vehicle identificationplate on the B-pillar on the driver's side.
Maximum loaded vehicle weight
The maximum weight is the sum of:
Rthe curb weight of the vehicle
Rthe weight of the accessories
Rthe load limit
Rthe weight of the factory installed optionalequipment
Kilopascal (kPa)
Metric unit for tire pressure. 6.9 kPa corre-sponds to 1 psi. Another unit for tire pressureis bar. 100 kilopascals (kPa) are the equivalentof 1 bar.
Load index
In addition to the load-bearing index, the loadindex may also be imprinted on the sidewall ofthe tire. This specifies the load-bearing capa-city more precisely.
Curb weight
The weight of a vehicle with standard equip-ment including the maximum capacity of fuel,oil and coolant. It also includes the air-condi-tioning system and optional equipment if theseare installed in the vehicle, but does notinclude passengers or luggage.
Maximum load rating
The maximum load rating is the maximum per-missible weight in kilograms or lbs for which atire is approved.
Maximum permissible tire pressure
Maximum permissible tire pressure for onetire.
Maximum load on one tire
Maximum load on one tire. This is calculatedby dividing the maximum axle load of one axleby two.
PSI (pounds per square inch)
A standard unit of measure for tire pressure.
Aspect ratio
Relationship between tire height and tire widthin percent.
Tire pressure
This is pressure inside the tire applying an out-ward force to each square inch of the tire'ssurface. The tire pressure is specified inpounds per square inch (psi), in kilopascal(kPa) or in bar. The tire pressure should onlybe corrected when the tires are cold.
Cold tire pressure
The tires are cold:
Rif the vehicle has been parked with the tiresout of direct sunlight for at least three hoursand
Rif the vehicle has not been driven furtherthan 1 mile (1.6 km)
All about wheels and tires287
Wheels and tires
Z

Clean the contact surfaces of the wheel andthe brake disc thoroughly every time a wheelis rotated. Check the tire pressure and, if nec-essary, restart the tire pressure loss warningsystem or the tire pressure monitor.
Direction of rotation
Tires with a specified direction of rotation haveadditional benefits, e.g. if there is a risk ofhydroplaning. These advantages can only begained if the tires are installed correspondingto the direction of rotation.
An arrow on the sidewall of the tire indicatesits correct direction of rotation.
Storing wheels
Store wheels that are not being used in a cool,dry and preferably dark place. Protect the tiresfrom oil, grease, gasoline and diesel.
Mounting a wheel
Preparing the vehicle
XStop the vehicle on solid, non-slippery andlevel ground.
XApply the electric parking brake manually.
XBring the front wheels into the straight-ahead position.
XShift the transmission to position ].
XSwitch off the engine.
XVehicles without KEYLESS-GO:removethe SmartKey from the ignition lock.
XVehicles with KEYLESS-GO:open the driv-er's door.The vehicle electronics now have status0.This is the same as the SmartKey havingbeen removed.
XVehicles with KEYLESS-GO:remove theStart/Stop button from the ignition lock(Ypage 118).
XIf included in the vehicle equipment, removethe tire-change tool kit from the vehicle.
XSafeguard the vehicle against rolling away.
iDue to differences in vehicle equipment,not all vehicles are equipped with a tire-change tool kit. For information on which
tools are required to perform a wheelchange on your vehicle, consult an author-ized Mercedes-Benz Center.
Necessary tire-changing tools can include,for example:
RJack
RWheel chock
RLug wrench
Securing the vehicle to prevent it from
rolling away
If your vehicle is equipped with a wheel chock,it can be found in the tire-change tool kit(Ypage 252).
The folding wheel chock is an additional safetymeasure to prevent the vehicle from rollingaway, for example when changing a wheel.
XFold both plates upwards C.
XFold out lower plate D.
XGuide the lugs on the lower plate fully intothe openings in base plate