348 Practical hintsReplacing bulbsSafe vehicle operation depends on proper 
exterior lighting and signaling. It is there-
fore essential that all bulbs and lamp as-
semblies are in good working order at all 
times.
Correct headlamp adjustment is extremely 
important. Have headlamps checked and 
readjusted at regular intervals and when a 
bulb has been replaced. See an authorized 
Mercedes-Benz Center for headlamp ad-
justment.
!You must not change the bulbs or LEDs 
yourself, as you could damage the vehi-
cle lighting systems.
Have blown bulbs or LEDs replaced by 
an authorized Mercedes-Benz Center.iIf the headlamps are fogged up on the 
inside as a result of high humidity, driv-
ing the vehicle a distance should clear 
up the fogging.
iSubstitute bulbs will be brought into 
use when lamps malfunction. Observe 
the messages in the multifunction dis-
play (
page 330).
iIf one of the following bulbs blows, an-
other bulb will adopt its function:
Rear turn signals
Brake lamps
Side lamps
Tail lamps 
405 Index
Replacing bulbs 348
Turning off the engine 58
U
Uniform Tire Quality Grading 
Standards 284
Units, Setting
Speedometer 129
Temperature 129
Tire inflation pressure 137
Unleaded gasoline, Premium 241, 379
Useful features 200
V
Vacuum line routing diagram label 368
Vehicle
Batteries 251
Break-in the vehicle 230
Control system, Settings menu 126
Dimensions 375
Locking/unlocking 38, 59, 96, 103
Modifications and alterations, Operat-
ing safety 20
Towing 360
Transporting 362
Unlocking in an emergency 344
Vehicle capacity weight 284Vehicle care 292
Vehicle Identification Number see VIN
Vehicle lighting 243
Vehicle literature portfolio 342
Vehicle loading 257
Load limit 258
Roof and trunk lid racks 227
Terminology 281
Vehicle maximum load on the tire 284
Vehicle Recovery services, Stolen 
(Tele Aid) 215
Vehicle status message memory 
menu 124
Vehicle washing 293
VIN 368, 389
W
Warning lamps see Lamps, Indicator and 
warning
Warning sounds
Exterior lamps 59
Parking brake 52
Seat belt telltale 69
Warranty coverage 14, 367
Washer fluid see Windshield washer fluid
Washer reservoir level 252
Washing the vehicle 292Wear pattern, Tires 284
Wheel bolts
Anti-theft wheel nuts 285
Tightening torque 285
Wheels, Sizes 372
Wheels, Tires and 254
Windows see Power windows
Windshield
Cleaning 294
Defrosting/Defogging 188
Windshield washer fluid 252, 383
Message in the multifunction 
display 341
Mixing ratio 383
Refilling 252
Wiping with 55
Windshield washer system 383
Windshield wipers 27, 54
Cleaning wiper blades 294
Replacing wiper blades 350
Single wipe 55
Winter driving 287
Instructions 237
Snow chains 288
Tires* 287
Winter tires* 287