Page 185 of 292

Display messages Possible causes/consequences and
M
MSolutions Tire
Tire
Press.
Press. Warning
Warning
Caution Tire
Caution Tire
Malfunction Malfunction The tire pressure in one or more tires has dropped suddenly. The
wheel position is shown in the multifunction display.
G WARNING
If you drive with a flat tire, there is a risk of the following hazards:
R a flat tire affects the ability to steer or brake the vehicle.
R you could lose control of the vehicle.
R continued driving with a flat tire will cause excessive heat build-
up and possibly a fire.
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
X Secure the vehicle against rolling away ( Ypage 131).
X Check the tires and, if necessary, follow the instructions for a
flat tire (Y page 233). Tire Tire
Press.
Press. Monitor
Monitor
Currently
Currently
Unavailable Unavailable Due to a source of radio interference, no signals can be received
from the wheel sensors. The tire pressure monitor is temporarily
malfunctioning.
X
Drive on.
The tire pressure monitor restarts automatically as soon as the
problem has been solved. Tire Press. Tire Press.
Sensor(s)Missing 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 displayed in the
multifunction display.
X
Have the faulty tire pressure sensor replaced at a qualified
specialist workshop. Tire Pressure Tire Pressure
Monitor Monitor
Inoperative No Inoperative No
Wheel Sensors Wheel Sensors The wheels mounted do not have a suitable tire pressure sensor.
The tire pressure monitor is deactivated.
X
Mount wheels with suitable tire pressure sensors.
The tire pressure monitor is activated automatically after driving
for a few minutes. Tire Pressure Tire Pressure
Monitor Monitor
Inoperative Inoperative The tire pressure monitor is faulty.
X
Visit a qualified specialist workshop. Display
messages
183On-board computer and displays Z
Page 186 of 292

Vehicle
Display messages Possible causes/consequences and
M
MSolutions N The trunk lid is open.
X
Close the trunk lid. L The hood is open.
G WARNING
The open hood may block your view when the vehicle is in motion.
There is a risk of an accident.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Close the hood. ´(Coupe only)
C(Roadster
only) At least one door is open.
X
Close the doors. K
Convertible Top Convertible Top
Operation Operation
Possible
Possible
to 31 mph
to 31 mph If you drive at speeds of more than 31 mph (50 km/h), you cannot
open or close the soft top.
X
Fully open or close the soft top (Y page 79).K
Convertible Top Convertible Top
Opening/Closing Opening/Closing
Not Finished Not Finished The soft top is not fully opened or closed. The hydraulics are
depressurized.
X Fully open or close the soft top (Y page 79).K
Open/Close Open/Close
Convertible Top Convertible Top
Completely Completely The roof is not locked. If you drive at speeds of more than
31 mph (50 km/h), you cannot open or close the soft top.
X
If you are driving at speeds of more than 31 mph (50 km/h),
reduce your speed.
X Push or pull the soft-top switch (Y page 79) until the soft top is
fully open or closed. K
Convertible Convertible
Top
Topin
in
Operation Please Operation Please
Wait Wait The on-board voltage is too low.
X Start the engine. 184
Display messagesOn-board computer and displays
Page 187 of 292

Display messages Possible causes/consequences and
M
MSolutions The soft top has been opened and closed several times in a row.
The soft-top drive has been switched off automatically for safety
reasons.
You can open and close the soft top again after approximately ten
minutes.
X
Switch off the ignition and turn it back on.
X Repeat the opening or closing procedure (Y page 79).K
Depress Brake to Depress Brake to
Start Engine Start Engine You have attempted to close the soft top with the soft top switch
while the vehicle was stationary.
X
Depress the brake pedal.
X Press the soft-top switch until the soft top is completely closed. ¥
Check Washer Fluid Check Washer Fluid The washer fluid level in the washer fluid reservoir has dropped
below the minimum.
X
Add washer fluid ( Ypage 221). SmartKey
Display messages Possible causes/consequences and
M MSolutions +
Change Key Battery Change Key Battery The SmartKey batteries are discharged.
X
Change the batteries ( Ypage 65). +
Key Not Detected Key Not Detected
(red display message) The SmartKey is not in the vehicle. A warning tone also sounds.
When you switch off the engine, you will be unable to restart it.
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Locate the SmartKey. The key is not detected while driving because a powerful radio
transmitter is causing interference. 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 Insert the key into the ignition lock and turn it to the desired
position (Y page 119). Display
messages
185On-board computer and displays Z
Page 188 of 292

Display messages Possible causes/consequences and
M
MSolutions +
Key Not Detected Key Not Detected
(white display
message) You are in the vehicle and the key currently cannot be detected
by the vehicle.
X
Change the location of the SmartKey in the vehicle.
If the SmartKey still cannot be detected:
X Insert the key into the ignition lock and turn it to the desired
position (Y page 119). +
Obtain a New Key Obtain a New Key The SmartKey needs to be replaced.
X
Visit a qualified specialist workshop. +
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. +
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. +
Remove 'Start' Remove 'Start'
Button and Insert Button and Insert
Key Key The KEYLESS-GO start function is temporarily malfunctioning or
is defective. A warning tone also sounds.
X
Insert the key into the ignition lock and turn it to the desired
position (Y page 119). +
Take Take
Your
YourKey
Keyfrom
from
Ignition
Ignition The SmartKey is in the ignition lock.
X
Remove the SmartKey. Transmission
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. Apply Brake Apply Brake
and Start Engine and Start Engine
to Disengage 'P' to Disengage 'P' When the engine is switched off, it is not possible to shift out of
park position
P.
X Depress the brake pedal and start the engine. Start Engine Start Engine
to Engage Gear to Engage Gear The gear cannot be engaged when the engine is switched off.
X
Depress the brake pedal and start the engine. 186
Display
messagesOn-board computer and displays
Page 189 of 292

Display messages Possible causes/consequences and
M
MSolutions Depress Brake
Depress Brake
to Start Engine to Start Engine You cannot start the engine. The engine was switched off in
position
Dor R.
X Depress the brake pedal and start the engine. Door Open Door Open
Not in 'P' 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 Pwith the button in the center console.
X Press the electric parking brake handle. Service Required Service Required
Do Do
Not
Not Shift
Shift Gears
Gears
Visit Dealer
Visit Dealer You cannot change gear due to a malfunction.
A warning tone also sounds.
If transmission position
Dis selected:
X Do not switch off the engine.
X Drive to a qualified specialist workshop without shifting the
transmission from position D.
If transmission position R,Nor Pis selected:
X Make sure that the electric parking brake is applied.
X Prevent the vehicle from rolling away before you leave it
(Y page 269).
X Notify a qualified specialist workshop or breakdown service.
If no transmission position and no drive program is displayed:
X Make sure that the electric parking brake is applied.
X Prevent the vehicle from rolling away before you leave it
(Y page 269).
X Notify a qualified specialist workshop or breakdown service. Only Shift to 'P' Only Shift to 'P'
when Vehicle is when 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 Pwith the button in the center console. Reversing Reversing
Not
NotPoss.
Poss.
Service Required
Service Required The sub geartrain with the even gears has failed. You can no longer
engage reverse gear. The smoothness of the gear change is
restricted. The transmission is in emergency mode.
X
Visit a qualified specialist workshop. Display
messages
187On-board computer and displays Z
Page 190 of 292

Display messages Possible causes/consequences and
M
MSolutions j
Parking Lock Parking Lock
Malfunct. Apply Malfunct. Apply
Parking Brake Parking Brake Transmission position
Pcannot be selected.
X Make sure that the electric parking brake is applied.
X Prevent the vehicle from rolling away before you leave it
(Y page 269).
X Visit a qualified specialist workshop. Have the vehicle
transported on a recovery vehicle or towed with the rear axle
raised ( Ypage 242). d
Stop Engage P Stop Engage P The transmission is faulty. The vehicle loses drive and rolls to a
standstill.
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Make sure that the electric parking brake is applied.
X Prevent the vehicle from rolling away before you leave it
(Y page 269).
X Consult a qualified specialist workshop. d
Transmission Oil Transmission Oil
Cooling Cooling
Malfunction Malfunction The transmission coolant pump is faulty. The transmission may
overheat.
X
In the on-board computer, select the AMG AMGmenu and check the
transmission oil temperature.
X Avoid excessive loading, e.g. due to dynamic driving.
X If the transmission oil temperature is less than 248 ‡(120 †),
you can continue driving to the nearest qualified specialist
workshop. d
Trans. Oil Trans. Oil
Overheated Drive Overheated Drive
on with Care on with Care The transmission oil has overheated.
Manual drive program
Mand shift range restriction are no longer
available. Only drive program Cis still available. The engine output
is reduced according to the degree of overheating.
X Allow the transmission oil to cool by adopting a defensive driving
style. 188
Display
messagesOn-board computer and displays
Page 191 of 292

Rear spoiler
Display messages Possible causes/consequences and
M
MSolutions Ñ
Rear Spoiler Rear Spoiler
Control System Control System
Inoperative Inoperative The rear spoiler cannot be fully retracted and may extend again.
If the retraction of the rear spoiler is blocked, e.g. by ice:
X
Make sure that the cause of the block is eliminated.
X Switch off the engine and lock the vehicle.
X Start the vehicle after waiting a few minutes.
The rear spoiler returns to the original position.
If this problem persists or the cause cannot be identified:
X Visit a qualified specialist workshop. Ñ
Rear Spoiler Rear Spoiler
Inoperative Limit
Inoperative Limit
200 km/h 200 km/h The rear spoiler cannot be fully extended and extends as far as
possible.
The speed of the vehicle is limited to 125 mph (200 km/h).
If the extension/retraction of the rear spoiler is blocked, e.g. by
ice:
X
Make sure that the cause of the block is eliminated.
X Switch off the engine and lock the vehicle.
X Start the vehicle after waiting a few minutes.
The rear spoiler returns to the original position.
If this problem persists or the cause cannot be identified:
X Visit a qualified specialist workshop. Display messages
189On-board computer and displays Z
Page 192 of 292

Warning and indicator lamps in the instrument cluster
Braking
Problem Possible causes/consequences and
M
MSolutions $
(USA
only)
J
(Canada
only)
The red brake
system
warning lamp
comes on
while the
engine is
running. A
warning tone
also sounds. There is not enough brake fluid in the brake fluid reservoir.
G WARNING
The braking effect may be impaired.
There is a risk of an accident.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X Secure the vehicle against rolling away (Y page 131).
X Do not add brake fluid. Adding more will not remedy the
malfunction.
X Consult a qualified specialist workshop.
X Observe the additional display messages in the multifunction
display. F
(USA
only)
!
(Canada
only)
The indicator
lamp for the
electric
parking brake
flashes and/
or the yellow
warning lamp
for the
electric
parking brake
lights up. The electric parking brake is temporarily malfunctioning or
defective.
G WARNING
In this condition, the vehicle is only of limited roadworthiness. This
can lead to an accident.
X Observe the additional display messages in the multifunction
display. 190
Warning and indicator lamps in the instrument clusterOn-board computer and displays