Mercedes-Benz GL-Class 2007 Owners Manual User Manual

Page 532

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531

Practical hints

Battery

The battery is a valve-regulated lead acid

(VRLA) battery, also referred to as “fleece” bat-
tery. 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 bat-
tery as otherwise the battery will be damaged.

Even though VRLA batteries do not require top-
ping-up of the electrolyte level and cannot be
opened to check the electrolyte level, the bat-
tery condition must be checked periodically by
performing a battery conductance test. Refer to
Maintenance Booklet for battery condition test-
ing intervals.

As with any other battery, the battery may dis-
charge if the vehicle is not operated for an ex-
tended period of time. You can connect a battery
maintenance charge unit tested and approved
for use on your vehicle model or disconnect the
battery to prevent battery discharge. Contact an
authorized Mercedes-Benz Light Truck Center
for more information.

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.

The battery, the battery ventilation hose
(

୴

page 536) and the lateral plug (

୴

page 536)

must always be securely installed when the
vehicle is in operation.

Warning!

Jump starting must only be done using the

jump-start contacts located in the engine

compartment (

୴

page 538).