Page 90 of 317

87 Flexible service system
Te ch n ica 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 
field prior to the next suggested service. Depending on 
operating conditions throughout the year, the next 
service is calculated and displayed in days or distance 
remaining.The display begins to appear either 30 days or 
2000 miles / km prior to the next suggested service.
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.
The message can be canceled manually by pressing 
button (1).
The next service due date is displayed either in days or 
in miles, depending on your driving style.
Once the suggested term has passed, the symbol 9 
or ´ plus message, preceded by a – (minus symbol) 
blinks every time when turning the key in steering lock 
to position 2.
Calling up service indicator manually:
Activate the instrument cluster, see page 80.
Within 4 seconds press button (1) twice to call up the 
FSS display for approximately 10 seconds. 
         
        
        
     
        
        Page 91 of 317

88 Flexible service system
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Important!
The FSS indicator is not an engine oil level indicator. 
See page 89 for engine oil level indicator.
Notes:
When disconnecting vehicle battery for one or more 
days at a time, such days will not be counted. Any such 
days not counted by the FSS can be added by your 
Mercedes-Benz Light Truck Center. 
The interval between services is determined by the type 
of driving for which the vehicle is used. For example, 
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.
Following a completed A or B service the Mercedes-
Benz Light Truck Center sets the counter mileage to 
10 000 miles (Canada: 15 000 km) and 365 days.
The counter can also be set by any individual. To do so:
1. Turn the key in steering lock to position 2.
2. Immediately press button (1) twice within one 
second.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 it 
corrected at a Mercedes-Benz Light Truck Center.
Notes:
The FSS allows for distances between 10 000 miles 
(Canada: 15 000 km) and 20 000 miles (Canada: 
30 000 km), or from 365 to 730 days 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 92 of 317

89 Engine oil level indicator
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Engine oil level indicator
To check the engine oil level, park vehicle on level 
ground, with engine at normal operational temperature.
Check oil level approximately 5 minutes after stopping 
the engine, allowing for the oil to return to the oil pan.
Turn the key in steering lock to position 2 and wait until 
the display “––––––” appears in the odometer display 
field.
Within 1 second press button (1) twice.The following messages are available:
“OIL i.O” 
No oil needs to be added.
“–1.0 L”
“–1.5 L”
“–2.0 L”
Add oil to upper (max) mark of the dipstick.
See page 233 for instructions on adding engine oil.
“OIL HI”
Do not overfill the engine.
Excessive oil must be siphoned or drained off. It could 
cause damage to the engine and catalytic converter not 
covered by the Mercedes-Benz Limited Warranty.
The display “––––––” flashes in the odometer display 
field if a proper oil level check cannot be performed. The 
engine oil level check can be repeated after a short time.
Perform the engine oil level check with the dipstick, if it 
cannot be completed via the odometer display field. 
See page 233.
In this case we recommend that you have the system 
checked at a Mercedes-Benz Light Truck Center. 
         
        
        
     
        
        Page 93 of 317

90 Exterior lamp switch
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Exterior lamp switch
Rotate switch $ to positions:
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.
õParking lamps plus low beam or high beam 
headlamps (switch pushed forward)ƒStanding lamps, left or right side (depending on 
turn signal switch position). Turn key in steering 
lock to position 0 or remove.
Standing lamps, left – move stalk to position (5).
Standing lamps, right – move stalk to position (4).
Move stalk to positions:
1Low beam (exterior lamp switch position õ)
2High beam (exterior lamp switch position õ)
3High beam flasher (high beam available 
independent of exterior lamp switch position)
4Turn signals, right
5Turn signals, left
To signal minor directional changes, such as changing 
lanes on a h ig hway, m ove  exterior la mp sw itch b rief ly to 
the point of resistance only and release. The turn 
signals blink three times.
To operate the turn signals continuously, move the 
exterior lamp 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. 
         
        
        
     
        
        Page 94 of 317

91 Exterior lamp switch
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Turn signal failure
If one of the turn signals fails, the turn signal indicator 
system f lashes and sounds at a faster than normal rate.
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 1 or 2.
Note:
With the key removed and a front door open, a warning 
sounds if the vehicle’s exterior lamps (except standing 
lamps) are not switched off.Daytime running lamps (Canada only)
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).
For nighttime driving the exterior lamp switch should 
be turned to position õ to permit activation of the 
high beam headlamps. 
         
        
        
     
        
        Page 95 of 317
92 Fog lamp switch
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Fog lamp switch (except Canada)
The switch is located in the center console.Press down rocker switch symbols:
1Auxiliary front fog lamps on (if so equipped). Green 
indicator lamp ‡ in instrument cluster comes on.
Press upper half of the switch again to switch fog 
lamps off. The green indicator lamp‡ in 
instrument cluster goes out.
2Rear fog lamp (driver’s side) on. Yellow indicator 
lamp in switch comes on in addition to green 
indicator lamp‡ in instrument cluster. 
Press lower half of the switch again to switch rear 
fog lamp off. The yellow indicator lamp in switch 
goes out.
Note:
Front fog lamps operate with the low beam headlamps 
on. Consult your state Motor Vehicle Regulations 
regarding allowable lamp operation. 
         
        
        
     
        
        Page 96 of 317

93 Fog lamp switch
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Fog lamp switch (Canada only)
The switch is located in the center console.
Press down rocker switch symbols:
1Front fog lamps on (if so equipped). Green indicator 
lamp ‡ in instrument cluster comes on.
Press upper half of the switch again to switch fog 
lamps off. The green indicator lamp‡ in 
instrument cluster goes out.2Rear fog lamp (driver’s side) in addition to front fog 
lamps on. Yellow indicator lamp in switch comes on 
in addition to green indicator lamp‡ in 
instrument cluster. 
Press lower half of the switch again to switch rear 
fog lamp off. The yellow indicator lamp in switch 
goes out.
When pressing upper half of the switch once with 
front fog lamps and rear fog lamp on, first the rear 
fog lamp is switched off. The yellow indicator lamp 
in the switch goes out. Press upper half of the 
switch again to switch off front fog lamps. The green 
indicator lamp‡ in instrument cluster also goes 
out.
Note:
Front fog lamps operate with the low beam headlamps 
on. Consult your state Motor Vehicle Regulations 
regarding allowable lamp operation. 
         
        
        
     
        
        Page 97 of 317

94 Hazard warning flasher
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Hazard warning flasher switch
The hazard warning flasher switch is located on top of 
the steering column.
The hazard warning flasher can be activated either 
manually via the switch located in the dashboard, or it 
is activated automatically at the time an airbag is 
deployed.
To activate hazard warning flasher, press switch once. 
To deactivate, press switch again.
If hazard warning flasher was activated automatically, 
press switch twice to deactivate.
Note:
To signal turns while being towed with hazard warning 
flasher in use, turn key in steering lock to position 2 
and activate combination switch for left or right turn 
signal in usual manner. Now deactivate the hazard 
warning flasher, only the selected turn signal will 
operate. Upon canceling the turn signal, the hazard 
warning flasher must be activated again.Headlamp cleaning system 
(with Xenon headlamps)
The switch is located in the instrument panel behind the 
steering wheel.
The headlamp washer can be activated with the key in 
steering lock position 2.
Briefly press symbol side of switch.