alternator MERCEDES-BENZ SLK280 2006 R171 Owner's Manual

374 Practical hintsWhat to do if …Symbol messagesDisplay symbol
Display message
Possible cause/consequence
Possible solution
#
Battery/Alternator
Visit workshop
The battery is no longer charging.
Possible causes:

Alternator malfunctioning


Broken poly-V-belt
Do not forget that the brake system
requires electrical energy and may
be operating with restricted capa-
bility. Considerably greater brake
pedal force is required and the stop-
ping distance is increased.

Stop immediately and check the poly-V-belt.
If it is broken:
Do not continue to drive. Notify an au-
thorized Mercedes-Benz Center.
If it is in order:

Drive immediately to the nearest autho-
rized Mercedes-Benz Center. Adjust driv-
ing to be consistent with reduced
braking responsiveness.

421 Practical hints
Battery
Battery
The battery is located in the engine com-
partment on the right-hand side below the
windshield washer fluid reservoir.
1Battery
2Positive terminal
3Negative terminal
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,
see “Battery” (
page 314).
Never lean over batteries while connecting
them, as you could otherwise be injured.
Battery fluid contains sulfuric acid. Do not
allow this fluid to come into contact with
eyes, skin or clothing. In case it does, imme-
diately 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.
Warning!
G
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 acci-
dent.!Never loosen or detach battery termi-
nal clamps while the engine is running
or the SmartKey is in the starter switch.
Otherwise the alternator and other
electronic components could be se-
verely damaged.
Have the battery checked regularly by
an authorized Mercedes-Benz Center.
Refer to Maintenance Booklet for main-
tenance intervals or contact an autho-
rized Mercedes-Benz Center for further
information.

437 Technical data
Layout of poly-V-belt drive
Layout of poly-V-belt drive
SLK 280, SLK 350
1Idler pulley
2Idler pulley
3Automatic belt tensioner
4Power steering pump
5Air conditioning compressor
6Crankshaft
7Coolant pump
8Generator (alternator)
SLK 55 AMG
1Automatic belt tensioner
2Power steering pump
3Air conditioning compressor
4Crankshaft
5Coolant pump
6Generator (alternator)
7Idler pulley

446 Technical dataElectrical systemModel
SLK 280
SLK 350
SLK 55 AMG
Generator (alternator)
14 V/150 A
14 V/150 A
14 V/150 A
Starter motor
12 V/1.4 kW
12 V/1.7 kW
12 V/1.7 kW
Battery
12 V/62 Ah
12 V/74 Ah
12 V/74 Ah
Spark plugs
NGK PLKR 6A
Bosch Platin Y 7 MPP33
NGK PLKR 6A
NGK IFR6D10
Electrode gap
0.031 in (0.8 mm)
0.031 in (0.8 mm)
0.039 in (1.0 mm)
Tightening torque
15 – 22 lb-ft (20 – 30 Nm)
15 – 22 lb-ft (20 – 30 Nm)
18 – 22 lb-ft (25 – 30 Nm)

460 Technical termsLine of fall
The direct line an object moves down-
hill when influenced by the force of
gravity alone.
Locking knob
Button on the door which indicates
whether the door is locked or un-
locked. Pushing the locking knob down
on an individual door from inside locks
that door.
Maintenance System (U.S. vehicles)
Maintenance service indicator in the
multifunction display that informs the
driver when the next vehicle mainte-
nance service is due. The Maintenance
System in your vehicle tracks distance
driven and the time elapsed since your
last maintenance service, and calls for
the next maintenance service accord-
ingly.Maximum loaded vehicle weight
(
page 345)
Maximum load rating
(page 345)
Maximum tire inflation pressure
(page 345)
Memory function*
Used to store three individual seat,
steering wheel and mirror positions.
MON
(Motor O
ctane N
umber)
The Motor Octane Number for gasoline
as determined by a standardized
method. It is an indication of a gaso-
line’s ability to resist undesired detona-
tion (knocking). The average of both
the MON (Motor Octane Number) and
->RON (Research Octane Number) is
posted at the pump, also known as
ANTI-KNOCK INDEX.Multifunction display
Two display fields in the instrument
cluster used to present information
provided by the control system.
Multifunction steering wheel
Steering wheel with buttons for operat-
ing the control system.
Normal occupant weight
(
page 345)
Overspeed range
Engine speeds within the red marking
of the tachometer dial. Avoid this
engine speed range, as it may result in
serious engine damage that is not
covered by the Mercedes-Benz Limited
Warranty.
Poly-V-belt drive
Drives engine components (alternator,
AC compressor, etc.) from the engine.