Uniform Tire Quality GradingQuality grades can be found where applicable
on the tire sidewall between tread shoulder
and maximum section width.
For example: Treadwear 200; Traction AA;
Temperature A
DOT Quality Grades
Treadwear
Traction AA A B C
Temperature A B C
All passenger car tires must conform to Fed‐
eral Safety Requirements in addition to these
grades.
TreadwearThe treadwear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified gov‐
ernment test course. For example, a tire
graded 150 would wear one and one-half, 1 g,
times as well on the government course as a
tire graded 100. The relative performance of
tires depends upon the actual conditions of
their use, however, and may depart signifi‐
cantly from the norm due to variations in driv‐
ing habits, service practices and differences in
road characteristics and climate.
Traction
The traction grades, from highest to lowest,
are AA, A, B, and C.
Those grades represent the tire's ability to
stop on wet pavement as measured under
controlled conditions on specified government
test surfaces of asphalt and concrete. A tire
marked C may have poor traction performance.
The traction grade assigned to this tire is
based on straight-ahead braking traction tests,
and does not include acceleration, cornering,
hydroplaning, or peak traction characteristics.Temperature
The temperature grades are A, the highest, B,
and C, representing the tire's resistance to the
generation of heat and its ability to dissipate
heat when tested under controlled conditions
on a specified indoor laboratory test wheel.
Sustained high temperature can cause the ma‐
terial of the tire to degenerate and reduce tire
life, and excessive temperature can lead to
sudden tire failure. The grade C corresponds
to a level of performance which all passenger
car tires must meet under the Federal Motor
Vehicle Safety Standard No. 109. Grades Band
A represent higher levels of performance on
the laboratory test wheel than the minimum re‐
quired by law.
Temperature grade for this tire
The temperature grade for this tire is es‐
tablished for a tire that is properly inflated and
not overloaded. Excessive speed, underinfla‐
tion, or excessive loading, either separately or
in combination, can cause heat buildup and
possible tire failure.
If necessary, have the vehicle towed.◀
M+S
Winter and all-season tires with better cold
weather performance than summer tires.
Tire tread
Summer tires
Do not drive with a tire tread depth of less than
0.12 in/3 mm.
There is an increased danger of hydroplaning if
the tire tread depth is less than 0.12 in/3 mm.
Winter tires
Do not drive with a tire tread depth of less than
0.16 in/4 mm.
Below a tread depth of 0.16 in/4 mm, tires are
less suitable for winter operation.Seite 175Wheels and tiresMobility175
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Approved wheels and tires
You should only use wheels and tires
that have been approved by the vehicle manu‐
facturer for your vehicle type; otherwise, e.g.,
despite having the same official size ratings,
variations can lead to chassis contact and with
it, the risk of severe accidents
The manufacturer of your vehicle cannot eval‐
uate non-approved wheels and tires to deter‐
mine if they are suited for use, and therefore
cannot guarantee the operating safety of the
vehicle.◀
Recommended tire brands
For each tire size, the manufacturer of your ve‐
hicle recommends certain tire brands. These
can be identified by a star on the tire sidewall.
With proper use, these tires meet the highest
standards for safety and handling.
New tires Tire traction is not optimal due to manufactur‐
ing circumstances when tires are brand-new;
they achieve their full traction potential after a
break-in time.
Drive conservatively for the first
200 miles/300 km.
Retreaded tires
The manufacturer of your vehicle does not rec‐
ommend the use of retreaded tires.
Retreaded tires
Possibly substantial variations in the de‐
sign and age of the tire casing structures can
limit service life and have a negative impact on
road safety.◀
Winter tires
Winter tires are recommended for operating on
winter roads.
Although so-called all-season M+S tires pro‐
vide better winter traction than summer tires, they do not provide the same level of perform‐
ance as winter tires.
Maximum speed of winter tires If the maximum speed of the vehicle is higher
than the permissible speed for the winter tires,
then a respective symbol is displayed in your
field of vision. You can obtain this sign from the
tire specialist or from your service center.
Maximum speed for winter tires
Do not exceed the maximum speed for
the respective winter tires; otherwise, tire dam‐
age and accidents can occur.◀
Rotating wheels between axles Different wear patterns can occur on the front
and rear axles depending on individual driving
conditions. The tires can be rotated between
the axles to achieve even wear. Your service
center will be glad to advise you. After rotating,
check the tire pressure and correct if needed.
Rotating the tires is not permissible on vehi‐
cles with different tire sizes or rim sizes on the
front and rear axles.
StorageStore wheels and tires in a cool, dry place with
as little exposure to light as possible.
Always protect tires against all contact with oil,
grease and fuels.
Do not exceed the maximum tire inflation pres‐
sure indicated on the side wall of the tire.Seite 177Wheels and tiresMobility177
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CareVehicle features and optionsThis chapter describes all standard, country-
specific and optional features offered with the
series. It also describes features that are not
necessarily available in your car, e. g., due to
the selected options or country versions. This
also applies to safety-related functions and
systems. The respectively applicable country
provisions must be observed when using the
respective features and systems.
Car washes General information
Regularly remove foreign objects such as
leaves in the area below the windshield when
the hood is raised.
Wash your vehicle frequently, particularly in
winter. Intense soiling and road salt can dam‐
age the vehicle.
Hints Closing the charging port flap
Close the charging port flap while wash‐
ing the vehicle. Otherwise, the vehicle could be
damaged.◀
Steam jets or high-pressure washers
When using steam jets or high-pressure
washers, hold them a sufficient distance away
and use a maximum temperature of
140 ℉/60 ℃.
If the vehicle has a glass sunroof and charging
port flap, ensure that a distance of at least
31.5 inches/80 cm is maintained. Holding them
too close or using excessively high pressures
or temperatures can cause damage or prelimi‐
nary damage that may then lead to long-term
damage.Follow the user's manual for the high-pressure
washer.◀
Cleaning sensors/camera lenses with
high-pressure washers
When using high-pressure washers, do not
spray the sensors and camera lenses on the
outside of the vehicle for long periods and
maintain a distance of at least 12 in/30 cm.◀
Have the charging port cleaned by
trained personnel
If the charging port is dirty, have the car
cleaned only by appropriately trained person‐
nel. Otherwise, there is a danger of injury from
high voltage.◀
Automatic car washes
Hints Do not use high pressure washing sys‐
tems
With washing systems operating at high pres‐
sures and nozzle positions close to the win‐
dows, drops of water can penetrate.◀▷Give preference to cloth car washes or
those that use soft brushes in order to
avoid paint damage.▷Make sure that the wheels and tires are not
damaged by the transport mechanisms.▷Fold in the exterior mirrors; otherwise, they
may be damaged, depending on the width
of the vehicle.▷Unscrew the rod antenna.▷Deactivate the rain sensor, refer to
page 73, to avoid unintentional wiper acti‐
vation.▷In some cases, an unintentional alarm can
be triggered by the interior motion sensor
of the alarm system. Follow the instruc‐Seite 200MobilityCare200
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Make-up mirror 139
Malfunction displays, see Check Control 78
Manual air distribu‐ tion 129, 131
Manual air flow 130, 133
Manual operation, door lock 43
Manual operation, exterior mirrors 57
Manual operation, fuel filler flap 170
Manual operation, Park Dis‐ tance Control PDC 119
Manual operation, rearview camera 121
Marking on approved tires 177
Master key, refer to Remote control 38
Maximum cooling 132
Maximum speed, display 84
Maximum speed, winter tires 177
Measure, units of 89
Medical kit 197
Menu, EfficientDynamics 157
Menu in instrument clus‐ ter 85
Menus, operating, iDrive 18
Menus, refer to iDrive operat‐ ing concept 19
Messages, see Check Con‐ trol 78
Microfilter 130, 133
Minimum tread, tires 176
Mirrors 57
Mobile communication devi‐ ces in the vehicle 150
Mobility System 178
Modifications, technical, refer to Safety 7
Moisture in headlight 191
Monitor, refer to Control Dis‐ play 18 Mounting of child restraint
systems 60
Multifunction steering wheel, buttons 14
Multimedia 6
N
Navigation 6
Neck restraints, front, refer to Head restraints 56
Neck restraints, rear, refer to Head restraints 56
Neutral cleaner, see wheel cleaner 202
New wheels and tires 176
Nylon rope for tow-starting/ towing 198
O OBD Onboard Diagnosis 189
OBD, see OBD Onboard Di‐ agnosis 189
Obstacle marking, rearview camera 122
Octane rating, refer to Rec‐ ommended fuel grade 172
Odometer 82
Office 6
Oil 184
Oil, adding 185
Oil change interval, service requirements 83
Old batteries, disposal 194
On-board computer 86
Onboard monitor, refer to Control Display 18
Opening/closing via door lock 43
Opening and closing 38
Opening and closing, without remote control 43
Opening and closing, with re‐ mote control 41
Operating concept, iDrive 18 Optional equipment, standard
equipment 6
Outside air, refer to Auto‐ matic recirculated-air con‐
trol 132
Overheating of engine, refer to Coolant temperature 82
P Paint, vehicle 201
Parallel parking assistant 123
Park Distance Control PDC 118
Parked car ventilation, refer to Stationary climate con‐
trol 133
Parked vehicle, condensa‐ tion 151
Parking aid, refer to PDC 118
Parking assistant 123
Parking brake 70
Parking lights 90
Parts and accessories 7
Passenger side mirror, tilting downward 57
Pathway lines, rearview cam‐ era 122
PDC Park Distance Con‐ trol 118
Pedestrian warning with city braking function 104
Performance display 77
Personal Profile 39
Personal Profile, exporting profiles 40
Pinch protection system, glass sunroof 52
Pinch protection system, win‐ dows 51
Plastic, care 202
Power failure 194
Power sunroof, glass 51
Power windows 50
Pressure, tire air pres‐ sure 173 Seite 215Everything from A to ZReference215
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Vehicle features and op‐tions 6
Vehicle identification num‐ ber 10
Vehicle jack 194
Vehicle paint 201
Vehicle position, GPS loca‐ tion 89
Vehicle wash 200
Ventilation 133
Venting, refer to Stationary climate control 133
VIN, see vehicle identification number 10
Voice activation system 26
W Warning and indicator lamps, see Check Control 78
Warning displays, see Check Control 78
Warning messages, see Check Control 78
Warning triangle 197
Warranty 7
Washer fluid 74
Washer nozzles, wind‐ shield 73
Washer system 72
Washing, vehicle 200
Water, high-voltage sys‐ tem 34
Water on roads 150
Weights 207
Welcome lamps during un‐ locking 41
Welcome lights 90
What to do after an acci‐ dent 199
Wheelbase, vehicle 206
Wheel cleaner 202
Wheels, changing 176
Wheels, everything on wheels and tires 173 Wheels, Flat Tire Monitor
FTM 99
Wheels, Tire Pressure Moni‐ tor TPM 96
Width, vehicle 206
Window defroster, rear 129, 132
Windows, powered 50
Windshield washer fluid 74
Windshield washer noz‐ zles 73
Windshield washer sys‐ tem 72
Windshield wiper 72
Winter storage, care 203
Winter tires, suitable tires 177
Winter tires, tread 175
Wiper 72
Wiper blades, replacing 190
Wiper fluid 74
Wiper, fold-out position 74
Wiper system 72
Wood, care 202
Word match concept, naviga‐ tion 25
Working on the body, see Working on the vehicle 34
Working on the high-voltage system, see Working on the
vehicle 34
Working under the hood 182 Seite 218ReferenceEverything from A to Z218
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