U
Uniform Tire Quality Grading
Standards  .................................. 244, 252
Units  
Selecting speedometer display
mode  ............................................. 131
Unleaded gasoline, premium  ........... 354
Unlocking the vehicle  
KEYLESS-GO  .................................... 71
Manually  ........................................ 309
SmartKey  ......................................... 70
Upholstery, cleaning  ......................... 266
Useful features  .................................. 207
V
Valet locking  ........................................ 77
Vehicle  
Battery  ........................................... 321
Care  ............................................... 260
Control system  .............................. 118
Identification Number (VIN)  ...........332
Locking/unlocking ........................... 70
Lowering (wheel change)  ...............321
Modifications and alterations,
Operating safety  .............................. 22
Towing  ........................................... 325
Unlocking/locking manually  ..........309
Vehicle dimensions
see Vehicle specification                          
Vehicle Identification Number
(VIN)  ................................................... 332
Vehicle jack see Jack                                                     
Vehicle lighting  .................................... 90
Vehicle loading  
Cargo tie-down rings ...................... 203
Instructions .................................... 202
Load limit  ....................................... 239
Roof rack  ....................................... 203
Split rear seat bench  .....................204
Terminology  ................................... 250
Vehicle maximum load on the tire  ... 252
Vehicle specification  
C 250 ............................................. 334
C 250 4MATIC  ............................... 335
C 250 4MATIC Sport ...................... 336
C 250 Sport  ................................... 334
C 300 ............................................. 337
C 300 4MATIC  ............................... 339
C 300 4MATIC Sport ...................... 340
C 300 Sport  ................................... 338
C 350 ............................................. 341
C 350 4MATIC  ............................... 343
C 350 Sport  ................................... 342
C 63 AMG  ...................................... 343
Vehicle status message memory  .... 129
Vehicle tool kit  .................................. 268
Vehicle washing see Vehicle care                                        
Vehicle weights
see Vehicle specification                          
W
Warning sounds  
Driver’s or passenger’s seat belt  .....51
Parking brake  ................................ 281
Parktronic system  ..........................187
Seat belt telltale  ............................ 301
Warranty coverage  ............................ 332
Washer and headlamp cleaning
system  ................................................ 358
Washer fluid  
Mixing ratio  .................................... 358
Refilling  .......................................... 228
Washing the vehicle  .......................... 260
Wear pattern (tires)  .......................... 245
Weights (vehicle) see Vehicle specification                          
Wheel  
Changing  ....................................... 317
Removing  ....................................... 320
Spare  ............................................. 317
Tightening torque ........................... 321
Wheels, sizes  ..................................... 344
Wheels, Tires and  .............................. 229
Window curtain air bags  ..................... 42
Windows see Power windows                                  
Windows, cleaning  ............................ 264
Windshield  
Cleaning wiper blades .................... 264
Defogging  ...................................... 195
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