Display messages Possible causes/consequences and
M
MSolutions 4
Check Engine Oil Check Engine Oil
Level Level
(Add 1
(Add 1 quart)
quart) AMG vehicles: the engine oil level is too low.
X
Check the oil level when next refueling, at the latest
(Y page 338).
X If necessary, add engine oil ( Ypage 338).
X Have the engine checked at a qualified specialist workshop if
engine oil needs to be added more often than usual.
! Avoid long journeys with too little engine oil. The engine will
otherwise be damaged.
Information on approved engine oils can be obtained from any
qualified specialist workshop or on the Internet at http://
bevo.mercedes-benz.com. 8
Fuel Level Low Fuel Level Low The fuel level has dropped into the reserve range.
X
Refuel at the nearest gas station. C There is only a very small amount of fuel in the fuel tank.
X
Refuel at the nearest gas station without fail. 8
Gas Cap Loose Gas Cap Loose The fuel system pressure is too low. The fuel filler cap is not closed
correctly or the fuel system is leaking.
X
Check that the fuel filler cap is correctly closed.
If the fuel filler cap is not correctly closed:
X Close the fuel filler cap.
If the fuel filler cap is correctly closed:
X Visit a qualified specialist workshop. 8
Ultra Low-sulfur Ultra Low-sulfur
Diesel Fuel Only Diesel Fuel Only Vehicles with a diesel engine: the fuel level has fallen below the
reserve range.
X
Refuel at the nearest gas station.
X Only use commercially available vehicular ULTRA-LOW SULFUR
HIGHWAY DIESEL FUEL (ULSD, 15 ppm sulfur MAXIMUM). ¸
Replace Air Filter Replace Air Filter Vehicles with a diesel engine: the engine air filter is dirty and must
be replaced.
X
Visit a qualified specialist workshop. !
Check Fuel Filter Check Fuel Filter Vehicles with a diesel engine: there is water in the fuel filter. The
water must be drained off.
X
Visit a qualified specialist workshop. 272
Display
messagesOn-board computer and displays
ProCarManuals.com
Display messages Possible causes/consequences and
M
MSolutions Blind Spot Assist
Blind Spot Assist
Currently Currently
Unavailable See Unavailable See
Operator's Operator's
Manual Manual
orActiveActive
Blind Spot Assist
Blind Spot Assist
Currently Currently
Unavailable See Unavailable See
Operator's Manual Operator's Manual Blind Spot Assist or Active Blind Spot Assist is temporarily
inoperative. Possible causes are:
R
the sensors are dirty.
R function is impaired due to heavy rain or snow.
R the radar sensor system is outside the operating temperature
range.
R the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio
stations or other sources of electromagnetic radiation.
The yellow 9indicator lamps also light up in the exterior
mirrors.
When the causes stated above no longer apply, the display
message disappears.
Blind Spot Assist or Active Blind Spot Assist is operational again.
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away ( Ypage 182).
X Clean the sensors (Y page 346).
X Restart the engine. Blind Spot Assist Blind Spot Assist
Inoperative Inoperative
orActivActiv
e Blind Spot
e Blind Spot
Assist Inoperative Assist Inoperative Blind Spot Assist or Active Blind Spot Assist is defective.
The yellow
9indicator lamps also light up in the exterior
mirrors.
X Visit a qualified specialist workshop. Park Assist Park Assist
Canceled Canceled The driver's door is open and the driver's seat belt has not been
fastened.
X
Repeat the parking process with the seat belt fastened and the
driver's door closed. You have inadvertently touched the multifunction steering wheel
while steering intervention was active.
X
While steering intervention is active, make sure that the
multifunction steering wheel is not touched unintentionally. The vehicle has started to skid and ESP
®
has intervened.
X Use Active Parking Assist again later (Y page 212).276
Display
messagesOn-board computer and displays
ProCarManuals.com
Display messages Possible causes/consequences and
M
MSolutions Park Assist
Park Assist
Inoperative Inoperative You have just carried out a large number of turning or parking
maneuvers.
Active Parking Assist will become available again after
approximately ten minutes (Y
page 212).
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Switch off and restart the engine.
If the display message continues to be displayed:
X Visit a qualified specialist workshop. PARKTRONIC is defective.
X
Visit a qualified specialist workshop. Park Assist Park Assist
Finished Finished The vehicle is parked. A warning tone also sounds.
The display message disappears automatically.
DISTRONIC PLUS Off DISTRONIC PLUS Off DISTRONIC PLUS has been deactivated (Y
page 191).
If it was not deactivated by the driver, a warning tone also sounds. DISTRONIC
DISTRONIC
PLUS
PLUSNow
Now
Available
Available DISTRONIC PLUS is operational again after having been
temporarily unavailable. You can now reactivate DISTRONIC PLUS
(Y
page 191). Display
messages
277On-board computer and displays Z
ProCarManuals.com
Display messages Possible causes/consequences and
M
MSolutions DISTRONIC PLUS
DISTRONIC PLUS
Currently Currently
Unavailable See Unavailable See
Operator's Manual Operator's Manual DISTRONIC PLUS is temporarily inoperative.
DISTRONIC PLUS Steering Assist is also temporarily inoperative.
Possible causes are:
R
function is impaired due to heavy rain or snow.
R the sensors in the radiator grill and the bumper are dirty.
R the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio
stations or other sources of electromagnetic radiation.
R the system is outside the operating temperature range.
R the on-board voltage is too low.
A warning tone also sounds.
When the causes stated above no longer apply, the display
message disappears.
DISTRONIC is operational again.
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away ( Ypage 182).
X Clean the sensors in the radiator grill and the bumper
(Y page 346).
X Restart the engine. DISTRONIC PLUS DISTRONIC PLUS
Inoperative Inoperative DISTRONIC PLUS is defective.
The following may have also failed:
R
BAS PLUS (Brake Assist System PLUS)
R PRE-SAFE ®
Brake
R DISTRONIC PLUS Steering Assist
A warning tone also sounds.
X Visit a qualified specialist workshop. DISTRONIC PLUS DISTRONIC PLUS
Passive Passive You have depressed the accelerator pedal. DISTRONIC PLUS is no
longer controlling the speed of the vehicle.
X
Remove your foot from the accelerator pedal. DISTRONIC PLUS DISTRONIC PLUS
- - - mph - - - mph An activation condition for DISTRONIC PLUS is not fulfilled.
X
Check the activation conditions for DISTRONIC PLUS
(Y page 191). 278
Display
messagesOn-board computer and displays
ProCarManuals.com
Vehicle
Display messages Possible causes/consequences and
M
MSolutions Apply Brake
Apply Brake
to Shift from 'P' to Shift from 'P' You have attempted to move the transmission selector lever to
position
D,Ror Nwithout depressing the brake pedal.
X Depress the brake pedal. Risk of Vehicle Risk of Vehicle
Rolling Away Rolling Away
Vehicle Not in 'P' Vehicle Not in 'P' The driver's door is open and the transmission is in position
R,N
or D.
A warning tone also sounds.
X Shift the transmission to position P.
X Secure the vehicle against rolling away (Y page 182).Service Required Service Required
Do Do
Not
Not Shift
Shift Gears
Gears
Visit Dealer
Visit Dealer You cannot change the transmission position due to a malfunction.
A warning tone also sounds.
If transmission position Dis selected:
X Drive to a qualified specialist workshop without shifting the
transmission from position D.
If transmission position R,Nor Pis selected:
X Notify a qualified specialist workshop or breakdown service. Only Shift Only Shift
to 'P' when to 'P' when
Vehicle is Vehicle is
Stationary Stationary The vehicle is moving.
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Shift the transmission to position P.N Sedan: the trunk lid is open.
X
Close the trunk lid. A Wagon: the tailgate is open.
G WARNING
When the engine is running, exhaust gases can enter the vehicle
interior if the tailgate is open.
There is a risk of poisoning.
X Close the tailgate. 282
Display messagesOn-board computer and displays
ProCarManuals.com
SmartKey
Display messages Possible causes/consequences and
M
MSolutions Â
Key Does Not Key Does Not
Belong to Vehicle Belong to Vehicle You have put the wrong SmartKey in the ignition lock.
X
Use the correct SmartKey. Â
Take Take
Your
YourKey
Keyfrom
from
Ignition
Ignition The SmartKey is in the ignition lock.
X
Remove the SmartKey. Â
Obtain a New Key Obtain a New Key The SmartKey needs to be replaced.
X
Visit a qualified specialist workshop. Â
Replace Replace
Key
KeyBattery
Battery The batteries of the KEYLESS-GO key are discharged.
X
Change the batteries (Y page 85).Â
Don't Forget Your Don't Forget Your
Key Key The display message is shown for a maximum of 60 seconds and
is only a reminder.
You have opened the driver's door with the engine switched off.
The KEYLESS-GO key is not in the ignition lock.
X
Remember to take the KEYLESS-GO key with you when you
leave the vehicle. Â
Key Not Detected Key Not Detected
(red display message) The KEYLESS-GO key is not in the vehicle.
A warning tone also sounds.
If the engine is switched off, you can no longer lock the vehicle
centrally or start the engine.
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 182).
X Locate the KEYLESS-GO key. The KEYLESS-GO key is not detected while the engine is running
because there is interference from a strong source of radio waves.
A warning tone also sounds.
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 182).
X Operate the vehicle with the SmartKey in the ignition lock. 284
Display messagesOn-board computer and displays
ProCarManuals.com
Display messages Possible causes/consequences and
M
MSolutions Â
Key Not Detected Key Not Detected
(white display
message) The KEYLESS-GO key cannot be detected at present.
X
Change the location of the SmartKey with the KEYLESS-GO
functions in the vehicle.
If the KEYLESS-GO key is still not detected:
X Operate the vehicle with the SmartKey in the ignition lock. Â
Key Detected in Key Detected in
Vehicle Vehicle The KEYLESS-GO key has been detected inside the vehicle during
locking.
X
Remove the KEYLESS-GO key from the vehicle. Â
Remove 'Start' Remove 'Start'
Button and Insert Button and Insert
Key Key The KEYLESS-GO key can continuously not be detected.
KEYLESS-GO is temporarily malfunctioning or is defective. A
warning tone also sounds.
X
Insert the SmartKey into the ignition lock and turn it to the
desired position.
X Visit a qualified specialist workshop. Â
Close Doors to Close Doors to
Lock Vehicle Lock Vehicle At least one door is open. A warning tone also sounds.
X
Close all doors and lock the vehicle again. Indicator and warning lamps in the instrument cluster
Safety
Seat belts Problem Possible causes/consequences and
M MSolutions ü
After starting the
engine, the red seat
belt warning lamp lights
up for 6 seconds.
The seat belt warning lamp reminds the driver and front passenger
to fasten their seat belts.
X
Fasten your seat belt (Y page 56).ü
After starting the
engine, the red seat
belt warning lamp lights
up. In addition, a
warning tone sounds
for up to six seconds.
The driver's seat belt is not fastened.
X
Fasten your seat belt (Y page 56).
The warning tone ceases. Indicator and warning lamps in the inst
rumentcluster
285On-board computer and displays Z
ProCarManuals.com
Problem Possible causes/consequences and
M
MSolutions ü
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 your seat belt (Y page 56).
The warning lamp goes out. There are objects on the front-passenger seat.
X
Remove the objects from the front-passenger seat and stow
them in a secure place.
The warning lamp goes out. ü
The red seat belt
warning lamp flashes
and an intermittent
audible warning
sounds.
The driver or front passenger has not fastened their seat belt. You
are driving faster than 15 mph (25 km/h) or have briefly driven
faster than 15 mph (25 km/h).
X
Fasten your seat belt (Y page 56).
The warning lamp goes out and the intermittent warning tone
ceases. There are objects on the front-passenger seat. 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 stow
them in a secure place.
The warning lamp goes out and the intermittent warning tone
ceases. 286
Indicator and warning lamps in the instrument clusterOn-board computer and displays
ProCarManuals.com