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Checking and refilling levels
Checking the electrolyte level of the
v
ehic
l
e battery
Fig. 249 In the engine compartment: remove
the lid fr
om the
v
ehicle's battery.
Fig. 250 In the engine compartment: lift off
the c
o
v
er from the vehicle's battery.
Read the additional information carefully
›
›
›
page 42
The battery's electrolyte level should be
checked regularly in high-mileage vehicles,
in hot countries and in older batteries. Other
batteries do not require maintenance.
Vehicles with a Start-Stop system
(››› page 209) are equipped with a special
battery marked with the letters “AGM”. For
technical reasons, it is not possible to check
the electrolyte level of these batteries
Preparations
●
Prepare the vehicle for work in the engine
compartment ››› page 271
●
Open the bonnet ››› page 271.
Opening the battery cover
The battery covers are different depending on
the engine size of the vehicle:
●
In the case of a lid: press the tab ››› Fig. 249
A
in the direction of the arrow and pull the
c
o
v
er upwards.
●
In the case of a cover: fold the cover to one
side to remove ››› Fig. 250.
Checking the battery electrolyte level
●
Make sure there is sufficient lighting to
clearly recognise the colours. Never use
flames or flashing objects as a light source.
●
Depending on the level of acid, the Magic
eye on the top of the battery will change col-
our.
Colour indi-
cator
Necessary operations
Light yellow or
Colourless
The electrolyte level of the vehicle's
battery is too low. Have the battery
checked and, where applicable, re-
placed by a specialised workshop.
Black
The electrolyte level of the vehicle's
battery is correct.
WARNING
Working with the vehicle battery involves a
risk of
corrosion, explosions or electric
shock.
●
Never tilt the vehicle battery. Battery acid
could spill out of the openings for the release
of gases and cause corrosion damage.
●
Never open the vehicle battery.
●
If battery acid splashes on you, immediate-
ly rinse your eyes and skin abundantly with
water for several minutes. Then seek medical
care immediately.
●
If acid is swallowed by mistake, consult a
doctor immediately.
Charging, replacing and connecting or
di
s
c
onnecting the battery
Charging the battery
The
v
ehic
le battery should be charged by a
specialised workshop only, as batteries us-
ing special technology have been installed
»
285
Technical dataAdviceOperationEmergenciesSafety
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