Page 77 of 317

74 Rear view mirrors
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Vehicles with automatic antiglare function:
With the key in steering lock position 2, the driver’s 
side mirror reflection brightness responds to changes in 
light sensitivity.
With gear selector lever in position “R”, or with the 
interior lamps (except cargo compartment lamp) 
switched on, the driver’s side mirror brightness does 
not respond to changes in light sensitivity.Important!
Electrolyte drops coming into contact with the vehicle 
paint finish can only be completely removed while in 
their liquid state, by applying plenty of water.
Notes:
The exterior mirrors have electrically heated glass. The 
heater switches on automatically, depending on outside 
temperature.
If an exterior mirror housing is forcibly pivoted from its 
normal position, it must be repositioned by applying 
firm pressure until it snaps into place.
Wa r n i n g !
In the case of an accident liquid electrolyte may 
escape the mirror housing when the mirror glass 
breaks.Electrolyte has an irritating effect. Do not allow the 
liquid come into contact with eyes, skin, clothing, 
or respiratory system. In cases it does, immediately 
flush affected area with water, and seek medical 
help if necessary. 
     
        
        Page 78 of 317

75 Rear view mirrors
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Exterior rear view mirror, electrically folding
(optional on ML 320 and ML 430)
The switch is located in the dashboard behind the 
steering wheel.
1Press switch to fold mirror out
2Press switch to fold mirror inIf an exterior mirror housing is forcibly forced forward 
or rearward (hit from the front or from the rear), press 
lower half of the switch (2) until you hear a hitting 
noise.
Press upper half of the switch (1) to fold mirror out.
You can adjust the exterior rear view mirrors again, see 
page 73.
Notes:
The exterior rear view mirrors can vibrate if they are 
not completely folded out.
Before running the vehicle through an automatic car 
wash, fold the mirrors in, otherwise they might get 
damaged.
After turning off the engine the exterior rear view 
mirrors can be operated with a front door opened or 
with key in steering lock position 1 for approximately 
30 minutes.
P82.00-2016-26
12 
     
        
        Page 81 of 317
78 Instrument cluster
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Indicator lamps in the instrument cluster
High beam
BAS malfunction, see page 221
ESP malfunction, see page 221
4-ETS+ malfunction, see page 221
ABS malfunction, see page 222
Brake pads worn down, see page 225
Engine oil level low, see page 224
Coolant level low, see page 224
Transmission in LOW RANGE mode, 
see page 221ESP and 4-ETS+. Adjust driving to road 
condition, see page 221
Brake fluid low, see page 219
EBP malfunction, see page 204
Parking brake engaged, see page 173
Front passenger airbag automatically 
switched off, see page 53
Front fog lamp, see page 92
Steering wheel adjustment not locked, 
see page 70
Fasten seat belts, 
see page 223
Battery not being charged properly, 
see page 223
SRS malfunction, see page 219
BAS
ESPABSLOW
RANGE
BRAKESRS 
     
        
        Page 83 of 317

80 Instrument cluster
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Activating instrument cluster display
The display for temperature, odometer, oil level 
indicator and clock is activated by:
•Opening the driver’s door.
•Pressing button (1) in the instrument cluster (with 
key removed or in steering lock position 0).
•Turning the key in steering lock to position 1 or 2.Display illumination
Rotate knob (1) to vary intensity of instrument lamps:
•Clockwise - instrument lamp intensity increases.
•Counterclockwise - instrument lamp intensity 
decreases.
Odometer/trip odometer
Activate the instrument cluster.
•Press knob (1) once to switch to or from odometer to 
trip odometer readout.
•Press and hold knob (1) for more than 1 second to 
reset trip odometer (with trip odometer displayed).
•Press knob (1) twice to display next scheduled 
service.
Clock
Adjusting clock (instrument cluster activated):
Minute: Pull out knob (2) and turn it to the right.
Hour: Pull out knob (2) and turn it to the left. 
     
        
        Page 86 of 317

83 Trip computer
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Trip computer (standard; optional on model ML 320)
The trip computer is located in the overhead console.
Function keys are:
•RESET
•MODE
Note:
With engine not running, the display switches off 
automatically 30 seconds after the last entry.To select a mode:
With key in steering lock position 1 or 2, press MODE 
key repeatedly to illuminate the display and scroll 
through menu for one of the following options:
1. Date, see page 84.
2. Compass, see page 84.
3. Stop watch, see page 86.
4. Present fuel consumption – displays miles per 
gallon or liters pe r 100 km.
5. Average fuel consumption – displays miles per 
gallon or liters per 100 km, see page 86.
6. Distance remaining with fuel presently in tank.
Note:
The display f lashes when fuel supply drops to the 
reserve level. The distance remaining is no longer 
shown.
7. Language – Press RESET key until the desired 
language is displayed. Depending on language 
selected, information is displayed in that country’s 
customary system. See page 86.
8. Trip computer switched off.
MODE 
     
        
        Page 87 of 317

84 Trip computer
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
To change an entry, select mode to be changed:
•Date –
Press RESET key, the month shown blinks. Now 
press MODE key to advance to selected month.
Press RESET key again, the day shown blinks. Now 
press MODE key to advance to selected day.
Press RESET key again, the year shown blinks. Now 
press MODE key to advance to selected year.
Press RESET key again, the display stops blinking 
and the date is set.
•Compass –
The compass displays the direction the vehicle is 
traveling, such as N, NE, E, SE, S, SW, W or NW.
Note:
The presence of buildings, bridges, power lines and 
large antenna masts can influence the displayed 
values. Metallic or magnetic objects in or on the 
vehicle can influence the accuracy of the compass.To change the compass zones:
Determine the geographical point of the vehicle with the 
aid of the zone maps below:
1. Turn key in steering lock to position 2.
2. Press MODE key repeatedly until the compass 
display appears in the trip computer display.
3. Press RESET key to select the compass zone mode. 
The zone selected last is shown in the display.
4. Press RESET key repeatedly until the correct 
compass zone, as determined from the zone map, is 
shown in the display.
5. Press MODE key twice to activate the new compass 
zone and change back to compass display. 
     
        
        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.