Page 79 of 290
76 Instrument cluster
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Trip odometer
To r es et :
•Press button (1) once (with key in steering lock
position 2).
•Press button (1) twice (with key removed or in
steering lock position 0 or 1).Clock
Adjusting clock:
Hour: Pull out knob (2) and turn it to the left.
Minute: Pull out knob (2) and turn it to the right.
Tachometer
The red marking on tachometer denotes excessive
engine speed.
Avoid this engine speed, as it may result in serious
engine damage that is not covered by the Mercedes-
Benz Limited Warranty.
To help protect the engine, the fuel supply is interrupted
if the engine is operated within the red marking.
P54.30-4498-26
1
2
Page 80 of 290

77 Flexible service system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Flexible service system (FSS)
(service indicator)
The FSS permits a flexible service schedule that is
directly related to the operating conditions of the
vehicle.
The symbol 9 or ´ appears in the main odometer
display field prior to the next suggested service.
Depending on operating conditions throughout the year,
the next service is calculated and displayed in days
š or distance 9 remaining.The symbols 9 or ´ indicate the type of service
to be performed:
9Service A
´Service B
The message is displayed for approximately 10 seconds
when turning the key in steering lock to position 2, or
while driving when reaching the service warning
threshold. It can be canceled manually by pressing
button (1).
Once the suggested term has passed, the message plus
symbol 9 or ´ preceded by a – (minus symbol)
blinks for approximately 30 seconds and a signal
sounds every time when turning the key in steering lock
to position 2.
The FSS display can also be called up for approximately
10 seconds with display illuminated by pressing
button (1) twice within 1 second.
Following a completed A or B service the
Mercedes-Benz Center sets the counter to 10 000 miles
(Canada: 15 000 km).
P54.30-4499-26
1
Page 81 of 290

78 Flexible service system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
The counter can also be set by any individual. To do so:
1. Turn key in steering lock to position 2.
2. Within 1 second press button (1) twice.
3. The present status for days or distance is displayed.
Within 10 seconds turn key in steering lock to
position 0.
4. Press and hold button (1), while turning key in
steering lock to position 2 again. The present status
for days or distance is displayed once more.
Continue to hold button (1).
After approximately 10 seconds a signal sounds, and
the display shows 10 000 miles
(Canada: 15 000 km) for approximately 10 seconds.
5. Release button (1).
If the FSS counter was inadvertently reset, have a
Mercedes-Benz Center correct it.Note:
When disconnecting vehicle battery for one or more
days at a time, such days will not be counted. Any such
days not counted by FSS can be added by your
Mercedes-Benz Center.
The interval between services is determined by the kind
of vehicle operation. Driving at extreme speeds, and
cold starts combined with short distance driving in
which the engine does not reach normal operating
temperature, reduce the interval between services.
However you choose to set your reference numbers, the
scheduled services as posted in the Service Booklet
must be followed to properly care for your vehicle.
Page 82 of 290

79 Checking engine oil level
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Checking engine oil level
(SLK 320 and SLK 32 AMG only)
To check the engine oil level, park vehicle on level
ground, with engine at normal operational temperature.
Check oil level approximately 5 minutes after turning
off the engine, allowing for the oil to return to the oil
pan.
Turn electronic key in steering lock to position 2 and
wait until the symbols : and I appear in the
odometer display field.Within 1 second press left button on the instrument
cluster twice.
The following messages are available:
“OK”
“-1.0 Q” (Canada: -1.0 L)
“-1.5 Q” (Canada: -1.5 L)
“-2.0 Q” (Canada: -2.0 L)
If the message “-2.0 Q” (Canada: -2.0 L) blinks and a
signal sounds, add oil according to amount displayed.
See page 197 for instructions on adding engine oil.
“HI”
The message “HI” blinks and a signal sounds.
Do not overfill the engine.
Excessive oil must be drained or siphoned. It could
cause damage to engine and catalytic converter not
covered by the Mercedes-Benz Limited Warranty.
The symbol I flashes in the odometer display field if
a proper oil level check cannot be performed.
The oil level check can be repeated after a short time.
P54.30-4497-29
Page 83 of 290

80 Checking engine oil level
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Perform the oil level check with the dipstick, if it cannot
be completed via the odometer display field. In this case
we recommend that you have the system checked at a
Mercedes-Benz Center.
Notes:
If the symbols : and I are continuously
illuminated after pressing left button on the instrument
cluster twice and there is no change in the odometer
display field or the low engine oil level warning lamp
comes on, a malfunction has occurred to the system.
Perform the engine oil level check with the dipstick.
If no oil leaks are noted continue to drive to the nearest
Mercedes-Benz Center to have the system checked.Engine oil consumption
Engine oil consumption checks should only be made
after the break-in period. During the break-in period,
higher oil consumption may be noticed and is normal.
Frequent driving at high engine speeds results in
increased consumption.
Page 84 of 290

81 Exterior lamp switch
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Exterior lamp switch
DOff
CParking lamps (also side marker lamps, taillamps,
license plate lamps, instrument panel lamps)
Canada only: When the engine is running, the low
beam is additionally switched on.
BParking lamps plus low beam or high beam
headlamps (combination switch pushed forward).
ˆStanding lamps, right (turn left one stop)
‚Standing lamps, left (turn left two stops)‡Front fog lamps (pull out one stop) with parking
lamps and / or low beam headlamps on. Green
indicator in lamp switch comes on.
†Rear fog lamp (pull out to second detent) in
addition to the front fog lamps. Yellow indicator in
lamp switch comes on.
Standing lamps
When the vehicle is parked on the street the standing
lamps (right or left side parking lamps) can be turned
on, making the vehicle more visible to passing vehicles.
The standing lamps cannot be operated with the key in
steering lock position 2.
Notes:
With the key removed and a door open, a warning
sounds if the vehicle’s exterior lamps (except standing
lamps) are not switched off.
Fog lamps will operate with the parking lamps and / or
the low beam headlamps on. Fog lamps should only be
used in conjunction with low beam headlamps. Consult
your State or Province Motor Vehicle Regulations
regarding allowable lamp operation.
P82.10-2476-26
Page 85 of 290

82 Exterior lamp switch
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Fog lamps are automatically switched off when the
exterior lamp switch is turned to position D.
Daytime running lamps (Canada only)
Vehicles with automatic transmission:
When the engine is running and the selector lever is in
a driving position, the low beam headlamps (includes
parking lamps, side marker lamps, taillamps and
license plate lamps) are automatically switched on.
When shifting from a driving position to position “N”
or “P”, the low beam switches off (2 seconds delay).
Vehicles with manual transmission:
With the engine running, the low beam headlamps
(includes parking lamps, side marker lamps, taillamps
and license plate lamps) are automatically switched on.
For nighttime driving the exterior lamp switch should
be turned to position B to permit activation of the
high beam headlamps.Headlamp cleaning system
The switch is located in the center console.
The headlamp washer can be activated with the key in
steering lock position 2.
Briefly press symbol side of switch.
P82.15-2007-26
Page 86 of 290
83 Combination switch
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Combination switch
1Low beam (exterior lamp switch position B)
2High beam (exterior lamp switch position B)
3High beam flasher (high beam available
independent of exterior lamp switch position)
4Turn signals, right
5Turn signals, leftTo signal minor directional changes, such as changing
lanes on a highway, move combination switch to the
point of resistance only and hold it there.
To operate the turn signals continuously, move the
combination switch past the point of resistance (up or
down). The switch is automatically canceled when the
steering wheel is turned to a large enough degree.
Turn signal failure
If one of the turn signal lamps fails, the turn signal
indicator system flashes and sounds at a faster than
normal rate.
2
3
4
4
5
5
1
P54.25-2302-26