detergent (e.g. washing-up liquid). Rub
carefully and always wipe entire seat sec-
tions to avoid leaving visible lines. Leave
the seat to dry afterwards. Cleaning
results depend on the type of dirt and
how long it has been there.
i Note that regular care is essential to
make sure that the appearance and com-
fort of the covers are retained over time.
Cleaning the seat belts !
Do not clean the seat belts using chemical
cleaning agents. Do not dry the seat belts
at temperatures above 80 † or in direct
sunlight.
X Use clean, lukewarm water and soap solu-
tion. Care
301Maintenance and care Z
Regular checking of wheels and tyres
R Regularly check the wheels and tyres of
your vehicle for damage at leas tevery 14
days, as well as after driving off-road or on
rough roads. Damage includes cuts, punc-
tures, cracks and bulges on tyres or severe
corrosio nordeformation on wheels, for
example. Damaged wheels can cause a
loss of tyre pressure.
R Regularly chec kthe tyre tread depth and
the condition of the tread across the whole
width of the tyre (Y page 323). In order to
inspect the inner side of the tyre surface,
turn the steering wheel to full lock.
R All wheels must have a valve cap to protect
the valve against dirt and moisture. Do not
fit anything onto the valve other than the
standard valve cap or avalve cap approved
by Mercedes-Ben zfor your vehicle.
Do not fit anything onto the valve, such as
tyre pressure monitoring systems.
R You should regularly check the pressure of
all your tyres including the spare wheel,
particularly prior to long trips. Adjust the
tyre pressure as necessary (Y page 328).
The service life of tyres depends on various
factors, including the following:
R driving style
R tyre pressure
R tyre mileage Tyre tread
G
WARNING
Please keep in mind that:
R tyre grip decreases rapidly on wet roads
when the tread depth is less than 3mm.
Thus, you should replace tyres that have
insufficient tread.
R winter tyres should be replaced when the
tread depth is 4mmorless, as they no lon-
ger provide adequate grip.
R the tread on a tyre may not wear evenly.
Thus, you should regularly check the tread depth and the condition of the tread across
the entire width of all tyres. If necessary,
turn the fron
twheels to full lock in order to
inspect the tyre tread more easily.
Otherwise, you could lose control of the vehi-
cle and cause an accident due to the reduced
grip of the tyres on the road. Selecting, fitting and replacing tyres
R Only fit tyres and wheels of the same type
and make.
R Only fit approved tyres of the correct size
onto the wheels.
R Tyres are supplied with a protective layer
from the factory. Run in new tyres at mod-
erate speeds for the first 100 km. They only
reach their full performance after this dis-
tance.
R Do not drive with tyres which have too little
tread depth. This otherwise significantly
reduces the traction on wet roads (aqua-
planing).
R Replace the tyres after six years at the lat-
est, regardless of wear. This also applies to
the spare wheel. Winter operation
General notes
Have your vehicle winterproofed at a qualified
specialist workshop at the onset of winter.
Observe the notes in the "Changing a wheel"
section (Y page 329). Driving with summer tyres
At temperatures below +7 †, summer tyres
lose elasticity and therefore traction and
braking power. Change the tyres on your vehi-
cle to M+S tyres. Using summer tyres at very
cold temperatures could cause tears to form,
thereby damaging the tyres permanently. Winter operation
323Wheels and tyres Z
