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Battery
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Warning!
Failure to follow these instructions can
result in severe injury or death.
Never lean over batteries while connecting.
You might get injured.
Battery fluid contains sulfuric acid. Do not
allow this fluid to come in contact with
eyes, skin or clothing. In case it does,
immediately flush affected area with water
and seek medical help if necessary.
A battery will also produce hydrogen gas,
which is flammable and explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking etc.
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Warning!
Do not place metal objects on the battery
as this could result in a short circuit.
Use leak-proof batteries only to avoid the
risk of acid burns in the event of an
accident.
Take care that you do not become statically
charged, e.g. by wearing synthetic clothing
or rubbing against textiles. For this reason,
you also should not pull or push the battery
over carpets or other synthetic materials.
Never touch the battery first. First touch
the outside body of the vehicle in order to
release any possible electrostatic charges.
Do not rub the battery with rags or cloths.
The battery could explode if touched due to
electrostatic charge or due to spark
formation.
!
The battery is a Valve-Regulated Lead
Acid (VRLA) battery, also referred to as
“fleece” battery.
Such batteries do not require topping-up of
the electrolyte level. VRLA batteries
therefore do not have cell caps and the
battery cover is non-removable. Do not
attempt to open the battery as otherwise
the battery will be damaged.
Even though VRLA batteries do not require
topping-up of the electrolyte level and
cannot be opened to check the electrolyte
level, the battery condition must be
checked periodically by performing a
battery conductance test. Refer to
Maintenance Booklet for battery condition
testing intervals.
The factory-equipped VRLA battery is leak-
proofed. Only use a battery as replacement
that has the same security features and is
of identical size, voltage, and capacity as
the factory-equipped battery.
!
As with any other battery, have the
battery disconnect at a qualified workshop
or an authorized Mercedes-Benz Center if
you do not intend to operate your vehicle
for an extended period of time to prevent
battery discharge. You may also connect an
accessory battery charge unit expressly
approved by Mercedes-Benz for your
vehicle model to maintain the battery
charge. Contact an authorized Mercedes-
Benz Center for further information.
The battery, the battery ventilation hose
and the lateral plug must always be
securely installed when the vehicle is in
operation.
!
Switch off the engine and switch off the
vehicle’s internal electrical functions
before you disconnect or remove the
battery’s terminal clamps. You could
otherwise destroy electronic assemblies
such as the generator.
Remove SmartKey from starter switch
(vehicles with KEYLESS-GO: Make sure the
vehicle’s on-board electronics have status 0)
when you turn off the engine and no longer
require any electrical consumers. The vehicle
Practical hints
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