2006 MERCEDES-BENZ E WAGON auxiliary battery

322 OperationEngine compartmentBatteries
Your vehicle is equipped with two
batteries:

Main battery (located in the cargo
compartment).


Auxiliary battery (located in the engine
compartment).
These batteries should always be suffi-
ciently charged in order to achieve their
rated service life. Refer to Maintenance
Booklet for battery maintenance intervals.
If you use your vehicle mostly for short-dis-
tance trips, you will need to have the bat-
tery charge checked more frequently.When replacing batteries, always use bat-
teries approved by Mercedes-Benz.
If you do not intend to operate your vehicle
for an extended period of time, consult an
authorized Mercedes-Benz Center about
steps you need to observe.
Batteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.
G
Observe all safety instructions
and precautions when handling
automotive batteries.
A
Risk of explosion
D
Keep flames or sparks away
from battery. Do not smoke.
B
Battery acid is caustic. Do not
allow it to come into contact
with skin, eyes or clothing.
In case it does, immediately
flush affected area with clean
water and seek medical help if
necessary.
E
Wear eye protection.
C
Keep children away.
F
Follow the instructions in this
Operator’s Manual.

452 Practical hintsBatteriesYour vehicle is equipped with two batter-
ies:

Main battery (battery for starter and
electrical consumers; located in the
cargo compartment).


Auxiliary battery (back-up battery; sta-
bilizes the electrical system if the main
battery is discharged; located in the en-
gine compartment).
The main battery is located in the cargo
compartment on the right-hand side under
a cover.

Pull cover up and detach it.1Negative terminal
2Positive terminal
Warning!
G
Jump starting must only be done using the
designated terminal connections in the en-
gine compartment (
page 457).
Warning!
G
Failure to follow these instructions can re-
sult in severe injury or death.
Observe all safety instructions and precau-
tions when handling automotive batteries
(page 322).
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.

479 Technical data
Electrical system
Electrical system
Model
E 350, E 350 4MATIC
E 500, E 500 4MATIC
E55AMG
Generator (alternator)
14 V/150 A
14 V/150 A
14 V/180 A
Starter motor
14 V/1.7 kW
14 V/1.7 kW
14 V/1.7 kW
Battery (auxiliary)
12 V/12 Ah
12 V/12 Ah
12 V/12 Ah
Battery (main)
12 V/95 Ah
12 V/95 Ah
12 V/95 Ah
Spark plugs
Bosch Platin Y 7 MPP33
NGK PLKR 6A
Bosch F8 DPP 332U
NGK PFR 5R-11
NGK IL FR 6 A
Electrode gap
0.031 in (0.8 mm)
0.039 in (1.00 mm)
0.031 in (0.8 mm)
Tightening torque
15 - 22 lb-ft (20 - 30 Nm)
18.5 - 22 lb-ft (25 - 30 Nm)
18.5 - 22 lb-ft (25 - 30 Nm)