Winter tires
R20
TiresWheels
BA: 255/45 R20 105 V XL M+SiBA: 9.0 J x 20 H2
Wheel offset: 1.61 in (41 mm)
R21
TiresWheels
BA: 295/35 R21 107 V XL M+Si4BA: 10.0 J x 21 H2
Wheel offset: 1.81 in (46 mm)
Emergency spare wheel
Important safety notes
GWARNING
The wheel or tire size as well as the tire type of the spare wheel or emergency spare wheel
and the wheel to be replaced may differ.
Mounting an emergency spare wheel may
severely impair the driving characteristics.
There is a risk of an accident.
To avoid hazardous situations:
Radapt your driving style accordingly and
drive carefully.
Rnever mount more than one spare wheel or
emergency spare wheel that differs in size.
Ronly use a spare wheel or emergency spare
wheel of a different size briefly.
Rdo not switch ESP®off.
Rhave a spare wheel or emergency spare
wheel of a different size replaced at the
nearest qualified specialist workshop.
Observe that the wheel and tire dimensions
as well as the tire type must be correct.
When using an emergency spare wheel or spare
wheel of a different size, you must not exceed
the maximum speed of 50 mph (80 km/h).
Snow chains must not be mounted on emer-
gency spare wheels.
General notes
Mounting the emergency spare wheel is descri- bed under "Mounting a wheel" (Ypage 409).
You should regularly check the pressure of the
emergency spare wheel, particularly prior to
long trips, and correct the pressure as neces-
sary (
Ypage 390). The value on the wheel or as
given in the "Wheels and tires" section is valid
(
Ypage 430).
An emergency spare wheel may also be moun-
ted against the direction of rotation. Observe
the time restriction on use as well as the speed
limitation specified on the emergency spare
wheel.
Replace the tires after six years at the latest,
regardless of wear. This also applies to the
emergency spare wheel.
iWhen you are driving with the collapsible
spare wheel mounted, the tire pressure loss
warning system or the tire pressure monitor
cannot function reliably. Only restart the tire
pressure loss warning system or tire pressure
monitor when the defective wheel has been
replaced with a new wheel.
Vehicles with tire pressure monitor: after
mounting an emergency spare wheel, the sys-
tem may still display the tire pressure of the
removed wheel for a few minutes. The value
displayed for the mounted emergency spare
wheel is not the same as the current tire pres-
sure of the emergency spare wheel.
4Use of snow chains not permitted. Observe the notes in the "Snow chains" section.
426Emergency spare wheel
Wheels and tires
ing. Be sure to observe the manufacturer's addi-
tional instructions when installing.
Deviations with respect to wavebands, maxi-
mum transmission outputs or antenna positions
must be approved by Mercedes-Benz.
The maximum transmission output (PEAK) at the
base of the antenna must not exceed the fol-
lowing values:
WavebandMaximum
transmission output
Short wave
3 - 54 MHz100 W
4 m waveband
74 - 88 MHz30 W
2 m waveband
144 - 174 MHz50 W
Trunked radio/Tetra
380 - 460 MHz10 W
70 cm waveband
400 - 460 MHz35 W
Mobile communications
(2G/3G/4G)10 W
The following can be used in the vehicle without
restrictions:
RRF transmitters with a maximum transmis-
sion output of up to 100 mW
RRF transmitters with transmitter frequencies
in the 380 - 410 MHz waveband and a maxi-
mum transmission output of up to 2 W
(trunked radio/Tetra)
RMobile telephones (2G/3G/4G)
There is no restriction for antenna positions on
the outside of the vehicle for the following wave-
bands:
RTrunked radio/Tetra
R70 cm waveband
R2G/3G/4G
Identification plates
Vehicle identification plate with vehi-
cle identification number (VIN)
XOpen the driver's door.
You will see vehicle identification plate :.
Example: vehicle identification plate (USA only)
;
Paint code
=VIN
Example: vehicle identification plate (Canada only)
;
Paint code
=VIN
iThe data shown on the vehicle identification
plate is used only as an example. This data is
different for every vehicle and can deviate
432Identification plates
Technical data
!Do not use the following:
RE15 (gasoline with 15% ethanol)
RE85 (gasoline with 85% ethanol)
RE100(100% ethanol)
RM15 (gasoline with 15% methanol)
RM30 (gasoline with 30% methanol)
RM85 (gasoline with 85% methanol)
RM100 (100% methanol)
RGasoline with metalliferous additives
RDiesel
Do not mix such fuels with the fuel recom-
mended for your vehicle.
!To ensure the longevity and full perform-
ance of the engine, only premium-grade
unleaded gasoline must be used.
If standard unleaded gasoline is unavailable
and you have to refuel with unleaded gasoline
of a lower grade, observe the following pre-
cautions:
ROnly fill the fuel tank to half full with regular
unleaded gasoline and fill the rest with pre-
mium-grade unleaded gasoline as soon as
possible.
RDo not drive at the maximum speed.
RAvoid sudden acceleration and engine
speeds over 3,000 rpm.
You will usually find information about the fuel
grade on the pump. If you cannot find the label
on the pump, ask the staff for assistance.
iFor further information, consult a qualified
specialist workshop or visit
http://www.mbusa.com (USA only).
As a temporary measure, if the recommended
fuel is not available, you may also use regular
unleaded gasoline with an octane rating of
87 AKI/91 RON. This may reduce engine per-
formance and increase fuel consumption. Avoid
driving at full throttle and sudden acceleration.
Never refuel using fuel with a lower AKI.
Information on refueling (
Ypage 163).
Additives
!Operating the engine with fuel additives
added later can lead to engine failure. Do not
mi
x fuel additives with fuel. This does not
include additives for the removal and preven-
tion of residue buildup. gasoline must only be mixed with additives recommended by
Mercedes-Benz. Comply with the instructions for use on the product label. More information
about recommended additives can be
obtained from any authorized Mercedes-Benz
Center.
Mercedes-Benz recommends that you use bran-
ded fuels that have additives.
The quality of the fuel available in some coun-
tries may not be sufficient. Residue could build
up in the injection system as a result. In such
cases, and in consultation with an authorized
Mercedes-Benz Center, the gasoline may be
mixed with the cleaning additive recommended
by Mercedes-Benz. You must observe the notes and mixing ratios specified on the container.
Diesel
Fuel grade
GWARNING
If you mix diesel fuel with gasoline, the flash
point is lower than that of pure diesel fuel.
When the engine is running, exhaust system
components could overheat without being
noticed. There is a risk of fire.
Never refuel with gasoline. Never mix gasoline with diesel fuel.
!Only use Ultra Low Sulfur Diesel (ULSD),
otherwise it may lead to increased wear and
damage to the fuel system, engine and
exhaust system.
!Do not use the following:
Rgasoline
Rdiesel with a bio-diesel content greater
than 5% (e.g. B20)
Rbio-diesel
Rvegetable oil
Rparaffin
Rkerosene
Rmarine diesel
Rheating oil
Do not mix such fuels with diesel fuel and do
not use any special additives. Otherwise,
engine damage may occur.
!In countries outside USA and Canada, only
use sulfur-free diesel with a sulfur content
under 50 ppm. Otherwise, the emission con-
trol system could be damaged.
Service products and filling capacities435
Technical data
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