check engine MERCEDES-BENZ GL SUV 2012 Owner's Guide

X
Slide cover :of positive terminal ;in the direction of the arro w.
X Connect positive terminal ;on your vehicl etopositive terminal =of donor battery B
using the jum plead. Alway sbegin with positive terminal ;on your own vehicle fir st.
X Start th eengine of the donor vehicle and run it at idling speed.
X Connec tnegativ eterminal ?of donor battery Bto eart hpoint Aof your vehicle using
the jum plead, connectin gthe jum plead to donor battery Bfirst.
X Start the engine.
X Before disconnecting the jum pleads, let the engines run for several minutes.
X First, remove the jum pleads from eart hpoint Aand negative terminal ?,then from pos-
itiv eterminal ;and positiv eterminal =,each time beginning at the contacts on your own
vehicle first.
X Close cover :of positive terminal ;after removing the jump leads.
X Have the battery checked at aqualified specialist workshop.
i Jump-starting is not considered to be anormal operatin gcondition.
i Jump-starting cables and further information regarding jum pstartin gcan be obtained at
any qualified specialis tworkshop. Towing and tow-starting
Important safety notes
G
WARNING
Safety-relevant func tions are restric tedorn ot
available if:
R the engin eisnot running.
R the brake system or the power steering is
malfunctioning
R the voltage supply or the vehicle' selectrical
system is malfunctioning.
If your vehicle is towed, significantly greater
forc emay be required to steer the vehicle or
to brake. There is arisk of an accident.
In such circumstances, use atowing bar.
Make sure that the steering is moving freely
befor etowing. G
WARNING
If the weight of the vehicle to be towed or tow-
started is greater than the permissible gross
weight of your vehicle:
R the towin geye could detach itself
R the vehicle/traile rcombination coul dover-
turn.
There is arisk of an accident.
When towing or tow-startin ganothe rvehicle,
its weight should not be greater than the per-
missible gross weight of your vehicle. G
WARNING
The vehicle is braked when the HOL Dfunction
or DISTRONIC PLUS is activated. Therefore,
deactivate HOLD and DISTRONIC PLUS if the
vehicle is to be towed.
! Make sure that the electric parking brake
is released. If the electric parking brake is
faulty, visit aqualified specialist workshop.
! Only secure the tow rope or towing bar to
the towing eyes. The vehicle may otherwise
be damaged. 388
Towin
gand tow-startingBreakdow nassistance

!
Alway suseasuitabl ecoolant mixture,
even in countries where high temperatures
prevail.
Otherwise, the engin ecooling system is not
sufficiently protected from corrosion and
overheating.
! The engin ecooling system is filled with
coolant, which must be renewed after
15 years or after 250,000 kilometres at the
latest.
The coolant is amixtur eofw ater and anti-
freeze/corrosio ninhibitor. It performs the
following tasks:
R anti-corrosio nprotection
R antifreeze protection
R raising th eboiling point
If antifreeze/ corrosion inhibitor is presen tin
the correct concentration, the boil ingp oint of
the coolant during operation will be approx-
imately 13 0†.
The antifreeze/ corrosion inhibitor concentra-
tion in the engin ecooling system should:
R be at least 50%. This will protect the engine
coolin gsystem against freezing down to
approximatel y-37 †.
R not exceed 55% (antifreeze protection
down to -45 †). Hea twill otherwise not be
dissipated as effectively.
If the vehicle has lost coolant, top it up with
equa lamounts of water and antifreeze/cor-
rosio ninhibitor. Mercedes-Benz recom-
mends an antifreeze/corrosion inhibito rcon-
cen trate in accordance with MB Specifica-
tions for Service Products 310.1.
The coolant is checked at every maintenance
interval at aqualified special istworkshop.
i When the vehicle is first delivered ,itisfil-
led with acoolant mixtur ethat ensures
adequate antifreeze and corrosion protec-
tion. Windscreen washe
rsystem an dhead-
lamp cleaning system
Important safety notes G
WARNING
Windscreen washer concentrat eishighly
flammable. If it comes into contact with hot
engine component sorthe exhaust system it
coul dignite. There is arisk of fire and injury.
Make sure that no windscreen washer con-
centrate is spille dnext to the filler neck.
! Only use washer fluid that is suitable for
plastic lamp lenses, e.g. MB SummerFit or
MB WinterFit. Unsuitable washer fluid
could damage the plastic lenses of the
headlamps.
! Do not use distilled or de-ionised water in
the washer fluid reservoir. Otherwise, the
level sensor may be damaged.
! Only the washer fluids SummerFit and
WinterFit can be mixed. Otherwise, the
spraying nozzles could become blocked.
At temperatures above freezing:
X Fill the washer fluid reservoir with amixture
of water and washer fluid, e.g. MB Sum-
merFit.
Mix 1part MB SummerFit to 100 parts water.
At temperatures below freezing:
X Fill the washe rfluid reservoir with amixture
of water and washer fluid, e.g. MB Winter-
Fit.
Adapt the mixin gratio to the outside temper-
ature.
R Down to Ò10 †: mix 1part MB WinterFit to
2p arts water.
R Down to Ò20 †: mix 1part MB WinterFit to
1p art water.
R Down to Ò29 †: mix 2parts MB WinterFit
to 1p art water.
i Add washe rfluid concentrate, e.g. MB
SummerFit or MB WinterFit, to the washer
fluid all year round. 430
Service products and capacitiesTechnical data