2020 MERCEDES-BENZ METRIS engine

Display messages
Possible causes/consequences and
M SolutionsTire Pressure Moni‐
tor Currently
Unavailable Due to a source of radio interference, no signals can be received
from the wheel sensors. The tire pressure monitor is temporarily
malfunctioning.
The tire pressure monitor restarts automatically as soon as the
problem has been solved. Wheel Sensor(s)
Missing There is no signal from the tire pressure sensor of one or several
wheels. The pressure of the affected tire is not shown in the display.
X Have the faulty tire pressure sensor replaced at a qualified spe-
cialist workshop. Tire Pressure Moni‐
tor Inoperative No
Wheel Sensors The wheels installed do not have suitable tire pressure sensors. The
tire pressure monitor is deactivated.
X Install wheels with suitable tire pressure sensors.
The tire pressure monitor is activated automatically after driving
for a few minutes. Tire Press. Moni‐
tor Inoperative The tire pressure monitor is malfunctioning.
X Visit a qualified specialist workshop. Vehicle
Display messages
Possible causes/consequences and
M SolutionsShift to 'P' or
'N' to Start Engine You have attempted to start the engine in transmission position
k
or h.
X Shift the transmission to position j or i.Auxiliary Battery
Malfunction The auxiliary battery for the transmission is no longer being
charged.
X Visit a qualified specialist workshop. Apply Brake to
Shift from 'P' You attempted to shift the transmission to position
h, k or i
without depressing the brake pedal.
X Depress the brake pedal. Perm. N Activated
Risk of Rolling An additional warning tone sounds. The transmission has been shif-
ted to position i when the vehicle is coasting or being driven.
X Stop the vehicle by depressing the brake pedal and when the
vehicle is stationary shift the transmission to position j.
X Continue driving by shifting the transmission to position h or
k. Risk of Rolling:
Transmission Not
in P An additional warning tone sounds. The driver's door is open and
the transmission is in position k, i or h.
X Shift the transmission to position j.
X Secure the vehicle to prevent it from rolling away ( Y page 138).Display messages (vehicles with steering wheel buttons)
225
On-board computer and displays Z

Display messages
Possible causes/consequences and
M SolutionsÐ
Power Steering Mal‐
function See Oper.
Manual An additional warning tone sounds. The steering power assistance
could be malfunctioning. You may need to steer more forcefully.
X Carefully continue to a qualified specialist workshop and have the
steering checked immediately. Â
Obtain a New Key The key needs to be replaced.
X Visit a qualified specialist workshop. Phone No Service Your vehicle is outside the network provider's transmitter/receiver
range. ¥
Check Washer Fluid The washer fluid level in the washer fluid reservoir has dropped
below the minimum.
X Add washer fluid (Y page 256).Indicator and warning lamps in the instrument cluster
General notes
When switching on the ignition, some systems carry out a self-test. Some indicator and warning
lamps may temporarily turn on or start to flash. This is not an indication of any problem. Only
when these indicator and warning lights turn on or start flashing after the engine has started or
during the journey has a malfunction occurred. Indicator and warning lamps in the instrument cluster
227
On-board computer and displays Z

Seat belts
Warning/
indicator
lamp
N Signal type
Possible causes/consequences and
M Solutionsü
N After starting the engine, the red seat belt warning lamp lights up or flashes.
A warning tone may also sound.
Only for certain countries: the red seat belt warning lamp lights up for a maxi-
mum of 6 seconds after the ignition is switched on.
The seat belt warning lamp reminds the driver and front-passenger to fasten
their seat belts.
X Fasten seat belt ( Y page 50).ü
N The red seat belt warning lamp lights up after the engine starts, as soon as
the driver's or the front-passenger door is closed.
The driver or front-passenger has not fastened their seat belt.
X Fasten seat belt (Y page
50).
The warning lamp goes out.
On vehicles with the Occupant Classification System (OCS), there are objects
on the front-passenger seat.
X Remove the objects from the front-passenger seat and store them in a safe
place.
The warning lamp goes out. ü
N The red seat belt warning lamp flashes and an intermittent audible warning
sounds.
The driver or front passenger has not fastened their seat belt. At the same time,
you are driving faster than

15 mph (25 km/h) or have briefly driven faster than
15 mph (25 km/h).
X Fasten seat belt (Y page
50).
The warning lamp goes out and the intermittent audible warning ceases.
On vehicles with the Occupant Classification System (OCS), there are objects
on the front-passenger seat. At the same time, you are driving faster than
15 mph (25 km/h

) or have briefly driven faster than 15 mph (25 km/h).
X Remove the objects from the front-passenger seat and store them in a safe
place.
The warning lamp goes out and the intermittent warning tone ceases.228
Indicator and warning lamps in the instrument cluster
On-board computer and displays

Safety systems
Warning/
indicator
lamp
N Signal type
Possible causes/consequences and
M Solutions$J
ò
N $ (USA only) or J (Canada only): the ABS and brake warning lamps
are lit while the engine is running.
EBD is unavailable due to a malfunction. ABS, BAS, hill start assist and ESP
®
as
well as its driving safety systems, for example, are therefore also unavailable.
ATTENTION ASSIST is deactivated and other driving systems could be automati-
cally deactivated.
G WARNING
The brake system continues to function normally, but without the functions lis-
ted above. The wheels could therefore lock prematurely if you brake hard, for
example.
This causes steerability and braking to be greatly impaired. The braking distance
may increase in emergency braking situations.
If ESP ®
is not operational, ESP ®
will not stabilize the vehicle.
There is an increased risk of skidding and accidents.
X Switch the engine off, wait briefly and start the engine again.
X Check if the display message has disappeared and ESP ®
is operational.
X If the display message continues to be displayed:
R Drive on with care.
R Visit a qualified specialist workshop immediately. $J
N The red
$ (USA only) or J (Canada only) brake system warning lamp is
lit while the engine is running. An additional warning tone sounds.
There is insufficient brake fluid in the brake fluid reservoir.
G WARNING
Braking performance can be impaired.
There is a risk of an accident.
X Stop the vehicle immediately, paying attention to road and traffic conditions.
Do not continue driving under any circumstances.
X Secure the vehicle to prevent it from rolling away ( Y page 138).
X Do not add brake fluid. Adding more will not remedy the malfunction.
X Consult a qualified specialist workshop.
X Observe the display messages. Indicator and warning lamps in the instrument cluster
229
On-board computer and displays Z

Warning/
indicator
lamp
N Signal type
Possible causes/consequences and
M Solutionsò!
N The yellow ABS warning lamp is lit while the engine is running.
ABS has been deactivated due to a malfunction. BAS, hill start assist and ESP
®
as well as its driving safety systems, for example, are therefore also deactiva-
ted.
ATTENTION ASSIST is deactivated and other driving systems could be automati-
cally deactivated.
G WARNING
The brake system continues to function normally, but without the functions lis-
ted above. The wheels could therefore lock prematurely if you brake hard, for
example.
This causes steerability and braking to be greatly impaired. The braking distance
may increase in emergency braking situations.
If ESP ®
is not operational, ESP ®
will not stabilize the vehicle.
There is an increased risk of skidding and accidents.
X Switch the engine off, wait briefly and start the engine again.
X Check if the display message has disappeared and ESP ®
is operational.
X If the display message continues to be displayed:
R Drive on with care.
R Visit a qualified specialist workshop immediately.
If the ABS control unit is faulty, there is also a possibility that other systems will
be restricted or unavailable. ÷
N The yellow ESP
®
warning lamp flashes while the vehicle is in motion.
ESP ®
or traction control is intervening because there is a risk of skidding or at
least one wheel has started to spin.
Cruise control is automatically deactivated.
X When starting off, do not depress the accelerator pedal more than is neces-
sary.
X Ease off the accelerator pedal while driving.
X Adapt your driving style to suit the weather and road conditions.
X Do not deactivate ESP ®
.
In rare cases , it may be best to deactivate ESP ®
(Y page
68).230
Indicator and warning lamps in the instrument cluster
On-board computer and displays

Warning/
indicator
lamp
N Signal type
Possible causes/consequences and
M Solutions÷
N The yellow ESP
®
warning lamp is lit while the engine is running.
ESP ®
, BAS, hill start assist, ESP ®
trailer stabilization and Crosswind Assist are
unavailable due to a malfunction.
ATTENTION ASSIST is deactivated and other driving systems could be automati-
cally deactivated.
G WARNING
The brake system continues to function normally, but without the functions lis-
ted above.
The braking distance in an emergency braking situation can thus increase.
If ESP ®
is not operational, ESP ®
will not stabilize the vehicle.
There is an increased risk of skidding and accidents.
X Switch the engine off, wait briefly and start the engine again.
X Check if the display message has disappeared and ESP ®
is operational.
X If the display message continues to be displayed:
R Drive on with care.
R Visit a qualified specialist workshop immediately. Indicator and warning lamps in the instrument cluster
231On-board computer and displays Z

Warning/
indicator
lamp
N Signal type
Possible causes/consequences and
M Solutionså
N The yellow ESP
®
OFF warning lamp is lit while the engine is running or the
ECO start/stop function is activated.
ESP ®
is deactivated. ESP ®
trailer stabilization and Crosswind Assist are deacti-
vated.
G WARNING
If ESP ®
is deactivated, vehicle stabilization assistance is significantly reduced.
There is an increased risk of skidding and accidents.
X Reactivate ESP ®
.
In rare cases , it may be best to deactivate ESP ®
(Y page
68).
X Adapt your driving style to suit the weather and road conditions.
If ESP ®
cannot be activated:
X Drive on with care.
X Have ESP ®
checked at a qualified specialist workshop. 6
N The red restraint system warning lamp is lit while the engine is running.
The restraint system is faulty.
G WARNING
The air bags or Emergency Tensioning Devices may either be triggered uninten-
tionally or, in the event of an accident, may not be triggered.
There is an increased risk of injury.
X Observe the display messages.
X Drive on with care.
X Have the restraint system and its components checked immediately at a
qualified specialist workshop.
Further information on the restraint system and its components can be found
under "Occupant safety"
(Y page 46).232
Indicator and warning lamps in the instrument cluster
On-board computer and displays

Engine
Warning/
indicator
lamp
N Signal type
Possible causes/consequences and
M Solutions;
N The yellow Check Engine warning lamp lights up while the engine is running.
There may be a malfunction in the following vehicle systems:
R in the engine management
R in the transmission management
R in the fuel injection system
R in the exhaust system
R in the ignition system (for vehicles with a gasoline engine)
R in the fuel system
The emission limit values may be exceeded and the engine may be running in
emergency mode.
X Have the vehicle checked as soon as possible at a qualified specialist work-
shop. 6
N The yellow reserve fuel warning lamp is on while the engine is running.
The fuel level has dropped to the reserve range.
X Refuel at the nearest gas station. ?
N The red coolant warning lamp comes on while the engine is running.
On vehicles without steering wheel buttons, the coolant temperature gauge is at
the start of the bar display
(Y page 178).
On vehicles with steering wheel buttons, the coolant temperature gauge is at
the start of the scale in the instrument cluster ( Y page 40).
The temperature sensor for the coolant temperature gauge is faulty.
The coolant temperature is no longer being monitored. There is a risk of engine
damage if the coolant temperature is too high.
X Stop the vehicle immediately, paying attention to road and traffic conditions,
and switch off the engine. Do not continue driving under any circumstances.
X Secure the vehicle to prevent it from rolling away (Y page
138).
X Consult a qualified specialist workshop. Indicator and warning lamps in the instrument cluster
233
On-board computer and displays Z