In order for the battery to achieve the maxi-
mum possible service life, it must always be
sufficiently charged.
The vehicle battery, like other batteries, can
discharge over time if you do not use the
vehicle .Insuch cases, have the battery dis-
connected at a qualified specialist workshop.
You can also charge the battery with a
charge rrecommended by Mercedes-Benz.
For more information, please contact a quali-
fied specialist workshop.
Have the battery charge checked more fre-
quently if you use the vehicle mainly for short
trips or if you leave it standing idle for a
lengthy period. Consult a qualified specialist
workshop if you wish to leave your vehicle
parked up for a long period of time.
i When you park the vehicle, remove the
key if you do not require any electrical con-
sumers. The vehicle will then use very little
energy, thus conserving battery power.
i After an interruption of the power supply,
e.g. the battery was discharged, you have
to:
R set the clock. Information on setting the
clock can be found in the separate oper-
ating instructions.
On vehicles with COMAND Online and a
navigation system, the clock is set auto-
matically.
R reset the function for folding the exterior
mirrors in/out automatically, by folding
the mirrors out once (Y page 120).Charging the battery
G
WARNING
Only charge the battery in a well-ventilated
area. As the battery is being charged, gases
can escape and generate minor explosions.
This could injure you and other persons or
cause damage to the paintwork or acid cor-
rosion on the vehicle. You can obtain information on battery charg-
ers which allow the batter
yto be charged
while still installed from a qualified specialist
workshop. G
WARNING
There is a risk of acid burns during the charg-
ing process due to the gases which escape
from the battery. Do not lean over the battery
during the charging process. G
WARNING
Battery acid is caustic. Avoid contact with the
skin, eyes or clothing.
! Only charge the installed battery with a
battery charger which has been tested and
approved by Mercedes-Benz. These battery
chargers allow the battery to be charged
while still installed in the vehicle.
! Only use battery chargers with a maxi-
mum charging voltage of 14.8 V.
! Only charge the battery using the jump-
start connection point.
The jump-starting connection point is in the
engine compartment (Y page 370).
Read the battery charger's operating instruc-
tions before charging the battery.
X Open the bonnet (Y page 345).
X Connect the battery charger to the positive
terminal and earth point in the same order
as when connecting the donor battery in
the jump-starting procedure
(Y page 370). Battery (vehicle)
369Breakdown assistance Z
Manual transmission Automatic transmis-
sion E 350 BlueEFFICIENCY
– 1505 kg
E 350 4MATIC BlueEFFICIENCY
– 1520 kg
E 500 BlueEFFICIENCY
– 1560 kg
E 500 4MATIC BlueEFFICIENCY
– 1520 kg
E 200 CDI BlueEFFICIENCY
1480 kg 1480 kg
E 220 CDI BlueEFFICIENCY
1480 kg 1480 kg
E 250 CDI BlueEFFICIENCY
1480 kg 1480 kg
E 250 CDI 4MATIC BlueEFFICIENCY
– 1500 kg
E 300 CDI BlueEFFICIENCY
– 1520 kg
E 350 CDI BlueEFFICIENCY
– 1520 kg
E 350 CDI 4MATIC BlueEFFICIENCY
– 1515 kg
E 350 BlueTEC
– 1550 kg
24 GHz radar sensor system (country overview)
The 24 GHz rada rsensor system requires separate approval for each country. If you are driving
in a country in which the radar sensor system is not approved, you must deactivate the system
using the on-board computer (Y page 262).
The current country overview can be obtained from a Mercedes-Benz Service Centre or on
the Internet at: http://www.mercedes-benz.de/betriebsanleitung.
Vehicles with anavigation system: the radar sensor system is deactivated automatically
near radio telescope facilities. Adisplay message appears in the multifunction display to tell
you that the radar sensor system is being switched off (Y page 283).
The currently active systems are automatically deactivated:
R DISTRONIC PLUS (Y page 195)
R Blind Spot Assist (Y page 225)
R Active Blind Spot Assist (Y page 229)
R BAS PLUS (Y page 71)
R PRE-SAFE ®
Brake (Y page 76)
If deactivation does not occur automatically, you must deactivate the radar sensor system
using the on-board computer (Y page 262).
Vehicles withou tnavigation and vehicles for Australia: you must deactivate the radar
sensor system using the on-board computer whe nyou are near a radio telescope facility
(Y page 262). 24 GHz radar sensor system (country overview)
451Technical data Z
