
Indicator and warning lamps
Instrument cluster on vehicles without steering wheel buttons
Instrument cluster in vehicles with steering-wheel buttons
Function Page
0043 Speedometer with warn-
ing and indicator lamps
0072
ESP
®
warning lamp 218
ASR warning lamp 218
003F
Coolant level too low 223
00AC
Coolant temperature too
high 223
0075
Restraint systems malfunc-
tion 42
0065
Brake fluid level too low 219
EBD malfunctioning 218
Trailer brake force booster
malfunction
219
00B2
Engine oil level warning 222 Function Page
00B9
Check Engine indicator
lamp
224
0028
Preglow 139
Preglow system malfunc-
tion
225
0044 Indicator and warning
lamps
004A
Left-hand turn signal 94
0025
ABS malfunction 218
0077
Tire pressure loss or the tire
pressure monitor is mal-
functioning (USA only) 226
Tire pressure loss (Canada
only)
292Instrument cluster
35At a glance

Function Page
00B1
Fluid level too low in wind-
shield washer/headlamp
cleaning system
226
00E2
DEF supply low or contami-
nated/thinned 182
Exhaust gas aftertreatment
malfunction 221
00C7
Warning and indicator
lamps, distance warning
system
162
00B0
Warning and indicator
lamps, Lane Keeping Assist
166
003E
Door or hood open 227
Electrically operated step
malfunction 227
0026
Brake pads/linings worn 222
0057
High-beam headlamps on
(vehicle with steering wheel
buttons) 94
004D
Right-hand turn signal 94
003D
ASR malfunction 58
BAS malfunction 218
0089
ESP
®
malfunction 218 Function Page
009F
Dirt accumulation in air fil-
ter
225
00B4
Reserve fuel 181
Fuel filler cap open 224
00B8
Water in the fuel 226
003D
Battery charging malfunc-
tion
222
0049
Bulb defective 227
0087 Tachometer with warn-
ing and indicator lamps 0066
Parking brake applied 155
0058
Low-beam headlamps on 92
004E
Working speed governor
(ADR) on
172
0057
High-beam headlamps on
(vehicle without steering
wheel buttons) 94
0077
Reserve fuel 224
Fuel filler cap open 224
0089
ESP
®
malfunction 218
0076
Fasten seat belts 227
i
Corresponding messages may also be
shown in the display (Y page 197).36
Instrument clusterAt a glance

Cornering lamps
The cornering lamps improve the illumination of the road over a wide angle in the direction
you are turning, enabling better visibility in
tight bends, for example.
The cornering light function switches on
automatically, if:
R you are traveling at a speed of less than
25 mph (40 km/h) and you switch on a turn signal or turn the steering wheel.
R you are traveling at a speed between
25 mph (40 km/ h)and 43 mph (70 km/h)
and turn the steering wheel.
The cornering lamp may remain lit for a short
time, but is automatically switched off after
no more than 3 minutes.
i If reverse gear is engaged the lamp on the
opposite side of the vehicle switches on
instead. Hazard warning lamps
G
WARNING
The rear exterior light will be covered if you:
R open the rear doors by 90°
R open the rear dropside.
The vehicle will then be difficult for other road users to see or will not be seen by them at all,
particularly if it is dark or visibility is poor.
There is a risk of an accident.
You should therefore ensure in this and simi-
lar situations that the vehicle is visible from
the rear in accordance with the relevant
national regulations, by using the warning tri- angle, for instance. Hazard warning lamp switch
X
To switch on/off: press the002Fhazard
warning lamp switch.
If you have indicated a turn while the hazard
warning lamps are switched on, only the turn signal lamps on the side of the vehicle selec- ted will light up.
The hazard warning lamps switch on auto-
matically if:
R an air bag is deployed.
R you brake sharply and bring the vehicle to a
halt from a speed of more than 45 mph
(70 km/h).
If the hazard warning lamps have been
switched on automatically, press the 002F
hazard warning lamp switch to switch them
off.
i The hazard warning lamps work even
when the ignition is switched off. Headlamp cleaning system
The headlamps are cleaned automatically
with a high-pressure water jet if the "Wipe
with washer fluid" function is activated
(Y page 107) while the low-beam headlamps
are on and the engine is running.
You can find information on refilling washer
fluid in the "Maintenance and care" section
(Y page 255). Exterior lighting
95Lights and windshield wipers Z

Display messages
Possible causes/consequences and
0050
0050Solutions 0065
Brake fluid Visit Brake fluid Visit
workshop workshop There is insufficient brake fluid in the fluid reservoir.
G WARNING
Braking performance can be impaired.
There is a risk of an accident. X Stop the vehicle as soon as possible, paying attention to road
and traffic conditions.
X Check the brake fluid level in the brake fluid reservoir
(Y page 254).
If the brake fluid is below the MIN mark:
X Do not continue driving under any circumstances.
X Do not add brake fluid. This does not solve the problem.
X Consult a qualified specialist workshop.
If the brake fluid is above the MIN mark: X Drive on with care.
X Visit a qualified specialist workshop immediately. 0065
Brake Brake
force
forcedistri‐
distri‐
bution
bution EBD has been deactivated due to undervoltage.
The battery may not be being charged.
G WARNING
The rear wheels could lock when you apply the brakes. The braking
distance can increase in emergency braking situations.
There is an increased risk of skidding and accidents.
X Stop the vehicle as soon as possible, paying attention to road
and traffic conditions.
X Do not drive on.
X Consult a qualified specialist workshop. 0065
Brake Brake
force
forcedistri‐
distri‐
bution Visit work‐
bution Visit work‐
shop shop EBD has been deactivated due to a malfunction.
G WARNING
The rear wheels could lock when you apply the brakes. The braking
distance can increase in emergency braking situations.
There is an increased risk of skidding and accidents.
X Stop the vehicle as soon as possible, paying attention to road
and traffic conditions.
X Do not drive on.
X Consult a qualified specialist workshop. 206
Display
messagesOn-board computer and displays

Problem
Possible causes/consequences and
0050
0050Solutions 0065
The red brake
system indicator
lamp is lit while
the engine is
running. There is insufficient brake fluid in the expansion tank.
G WARNING
Braking performance can be impaired.
There is a risk of an accident. X Vehicles with steering wheel buttons: also observe the mes-
sages in the display (Y page 197).
X Stop the vehicle as soon as possible, paying attention to road
and traffic conditions.
X Check the brake fluid level in the expansion tank (Y page 254).
X If the brake fluid is below the MIN mark: do not drive on!
X Do not add brake fluid. This does not solve the problem.
X Consult a qualified specialist workshop. 0065
When towing a
trailer: the red
brake system
indicator lamp is
lit while the
engine is run-
ning.
Additionally, a
warning tone
sounds. G
WARNING
The brake force booster in the trailer is faulty.
The driving and braking characteristics of your vehicle could
change. There is a risk of the trailer overbraking and of you losing control over the truck/trailer combination.
There is a risk of an accident.
X Vehicles with steering wheel buttons: also observe the mes-
sages in the display (Y page 197).
X Stop the vehicle as soon as possible, paying attention to road
and traffic conditions.
X Do not drive on.
X Consult a qualified specialist workshop. 003D
The yellow ASR/
BAS indicator
lamp is lit while
the engine is
running. ASR has been deactivated due to a malfunction.
The engine power output may be reduced.
G WARNING
The driven wheels can spin when accelerating.
There is an increased risk of skidding and accidents.
X Drive on with care.
X Consult a qualified specialist workshop as soon as possible. Indicator and warning lamps in the instrument cluster
219On-board computer and displays Z

Problem
Possible causes/consequences and
0050
0050Solutions 0025
The yellow ABS
indicator lamp is
lit while the
engine is run-
ning. ABS is deactivated due to a malfunction or is temporarily unavail-
able. ESP ®
, ASR and BAS, as well as cruise control, are also
unavailable as a result.
Self-diagnosis may not be complete, or the battery may not be
charging.
G WARNING
The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock, e.g. if thebrakes are applied with maximum force.
This causes steerability and braking to be greatly impaired.
The braking distance can increase in emergency braking situa-
tions.
The driven wheels can spin when accelerating.
If ESP ®
is not operational, ESP ®
will not stabilize the vehicle.
There is an increased risk of skidding and accidents.
X Drive a short distance at a speed above 13 mph (20 km/h).
The functions mentioned above are available again when the
indicator lamp goes out.
If the indicator lamp does not go out: X Drive on with care.
X Visit a qualified specialist workshop immediately. 00E2
The yellow DEF
indicator lamp is
lit while the
engine is run-
ning. The exhaust gas aftertreatment is malfunctioning or the current
Diesel Exhaust Fluid (DEF) supply is limiting the vehicle range.
X Observe the messages in the display. 0089
The yellow ESP ®
indicator lamp is lit while the
engine is run-
ning. ESP
®
is deactivated due to undervoltage or a malfunction. As a
result, cruise control has also been deactivated.
Engine power output may be reduced.
The battery may not be being charged.
G WARNING
If ESP ®
is not operational, ESP ®
will not stabilize the vehicle.
There is an increased risk of skidding and accidents.
X Vehicles with steering wheel buttons: also observe the mes-
sages in the display (Y page 197).
X Drive on with care.
X Visit a qualified specialist workshop immediately. Indicator and warning lamps in the instrument cluster
221On-board computer and displays Z

Overview of the engine compartment
Example: engine
0043
Coolant expansion tank cap
(Ypage 253)
0044 DEF filler neck cap 4
(Y page 148)
0087 Engine oil filler neck cap (Y page 250)
0085 Brake fluid expansion tank cap
(Ypage 254)
0083 Washer fluid reservoir cap (Y page 255)
Regularly check the fluid level and the assem- bly for leaks. If you detect fluid loss, e.g. oil
flecks on the vehicle parking space, consult a qualified specialist workshop immediately. Engine oil
General notes !
Engine oil gets dirty in the course of oper-
ation and its quality and volume are gradu- ally diminished. Regularly check the oil
level, and top up or have it replaced as nee-
ded.
Observe the information on engine oils and oil
consumption in the "Technical data" section
(Y page 322).
You can check the oil level in the engine:
R on the display of the on-board computer
R with the oil dipstick Checking the oil level shown in the dis-
play If at extremely low temperatures no engine oil
level is displayed after 5 minutes, repeat the
engine oil level check after another
5 minutes.
If an oil level reading is still not displayed,
check the engine oil level with the dipstick
(Y page 251). Have the engine oil level
checked at a qualified specialist workshop.
Only check the oil level when the engine is at
normal operating temperature.
X Park the vehicle on a level surface.
X Switch off the engine.
X Wait 5 minutes.
X Turn the key to position 2in the ignition
lock.
The display is activated.
X Vehicles without steering wheel but-
tons: press the 0079menu button on the
instrument cluster (Y page 34) repeatedly
until the display shows the 00AFsymbol.
The --:--
--:-- display message appears in the
display while the engine oil level measure-
ment is running.
X Vehicles with steering wheel buttons:
press the 0098service button on the instru-
ment cluster (Y page 34).
The 00B2 Engine Engine oil
oillevel
level Measuring
Measuring
in progress
in progress display message appears in
the display while the engine oil level meas-
urement is in progress.
Display message for vehicles without
steering-wheel buttons: the display may
show the following messages after the engine oil level measurement. 00AF Action
OK OK X
Do not add oil. 4
For Cargo Van/Passenger Van only 250
Engine compartmentMaintenance and care

Adding coolant
X If the coolant drops under the minimum
mark on coolant expansion tank 0044, add
coolant to the maximum mark.
Observe the information on coolant mix-
ture ratio and water quality in the "Techni-
cal data" section (Y page 325). To prevent
damage to the engine cooling system, use
only approved corrosion inhibitor/anti-
freeze that comply with the Mercedes-Benz Specifications for Service Products.
X Replace cap 0043and turn it clockwise to
tighten.
X Start the engine.
X After approximately 5 minutes, switch off
the engine and allow it to cool down.
X Check the coolant level again and add cool-
ant if necessary.
X Close the hood. Brake fluid
G
WARNING
Service products may be poisonous and haz-
ardous to health. There is a risk of injury.
Comply with instructions on the use, storage
and disposal of service products on the labels of the respective original containers. Always
store service products sealed in their original containers. Always keep service products out
of the reach of children.
Brake fluid is hazardous to health. Also
observe the safety notes in the "Service prod-
ucts and capacities" section (Y page 318).G
WARNING
The brake fluid constantly absorbs moisture
from the air. This lowers the boiling point of
the brake fluid. If the boiling point of the brake fluid is too low, vapor pockets may form in the brake system when the brakes are applied
hard. This would impair braking efficiency.
There is a risk of an accident. You should have the brake fluid renewed at
the specified intervals.
! Brake fluid corrodes paint, plastic and
rubber. If paint, plastic or rubber has come into contact with brake fluid, rinse with
water immediately.
Have the brake fluid renewed every 2 years at
a qualified specialist workshop. Observe the
information on brake fluid in the "Technical
data" section (Y page 324). Check the brake fluid level regularly, e.g.
weekly or when refueling.
Checking the brake fluid level
X Stop your vehicle as far away from traffic as
possible on level ground.
X Switch off the engine.
X Secure the vehicle to prevent it from rolling
away.
X Open the hood (Y page 248).
X Check the brake fluid level.
The brake fluid level is correct if the level is
between the MIN mark and MAX mark on
brake fluid reservoir 0043.
X Close the hood.
! If the brake fluid level in the brake fluid
reservoir has fallen to the MIN mark or
below, check the brake system immedi-
ately for leaks. Also check the thickness of the brake linings. Visit a qualified specialist
workshop immediately.
Do not add brake fluid. This does not cor-
rect the malfunction. 254
Engine compartmentMaintenance and care