Display messages Possible causes/consequences and
0050
0050Solutions 00B6
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. 009E
Replace Air Filter Replace Air Filter The air filter is dirty and must be replaced.
X
Visit a qualified specialist workshop. 003A
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. Driving systems
Display messages Possible causes/consequences and
0050 0050Solutions Cruise Control
Cruise Control
Inoperative Inoperative Cruise control is defective.
A warning tone also sounds.
X
Visit a qualified specialist workshop. Cruise Control Cruise Control
--- mph --- mph A condition for activating cruise control has not been fulfilled.
You attempted to save a speed of less than 20 mph
(30 km/h).
X Activate ESP ®
(Y page 56).
X If the situation allows, drive faster than 20 mph (30 km/h) and
save the speed.
X Check the activation conditions for cruise control
(Y page 134). 176
Displays and operationOn-board computer and displays
Display messages Possible causes/consequences and
0050
0050Solutions Blind Spot Assist
Blind Spot Assist
Inoperative Inoperative Blind Spot Assist is defective.
The yellow
0063indicator lamps also light up in the exterior
mirrors.
X Visit a qualified specialist workshop. Blind Spot Assist Blind Spot Assist
Currently Currently
Unavailable See Unavailable See
Operator's Manual Operator's Manual Blind Spot Assist is temporarily inoperative if:
R
the sensors are dirty.
R its 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 0063indicator lamps also light up in the exterior
mirrors.
Blind Spot Assist is operational again and the display message
disappears if:
R the dirt (e.g. slush) drops away while the vehicle is in motion.
R the system detects that the sensors are fully available again.
R the radar sensor system is back within the operating
temperature range.
If the display message continues to be displayed:
X Clean the sensors (Y page 224).
X Restart the engine. Tires
G
WARNING
Tires with tire pressures that are too low or too high are associated with the following hazards:
R they can burst, in particular if the vehicle is heavily laden or when driven at high speeds.
R the tires can wear excessively and/or unevenly, which can severely impair tire traction.
R the driving, steering and braking characteristics may be severely impaired.
There is a risk of accident.
Follow recommended tire inflation pressures and check the pressure of all the tires including the
spare wheel:
R monthly, at least
R if the load changes
R before beginning a long journey
R under different operating conditions, e.g. off-road driving
If necessary, correct the tire pressure. Displays and operation
177On-board computer and displays Z
Display messages Possible causes/consequences and
0050
0050Solutions Tire
Tire
Press.
Press. Monitor
Monitor
Inoperative
Inoperative The tire pressure monitor is faulty.
X
Visit 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. Check Check
Tires
Tires The tire pressure in one or more tires has dropped significantly.
The wheel position is shown in the multifunction display.
A warning tone also sounds.
G WARNING
Insufficient tire pressure can cause the tires to burst. the driving
characteristics, as well as steering and braking, may be greatly
impaired. 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 Correct the tire pressure (Y page 255).
X If necessary, change the wheel (Y page 269).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.
A warning tone also sounds.
G WARNING
Insufficient tire pressure can cause the tires to burst. the driving
characteristics, as well as steering and braking, may be greatly
impaired. 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 If necessary, change the wheel (Y page 269).Correct Correct
Tire Pressure Tire Pressure The tire pressure is too low in at least one of the tires, or the tire
pressure difference between the wheels is too great.
X
Check the tire pressures at the next opportunity. If necessary,
correct the tire pressure (Y page 255).TirePress. TirePress.
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. 178
Displays and operationOn-board compu
ter and displays
Display messages Possible causes/consequences and
0050
0050Solutions 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. 0077
Tire Press. Tire Press.
Warning Caution Warning Caution
Tire Malfunction Tire Malfunction The tire pressure in one or more tires has dropped suddenly. A
warning tone also sounds.
G WARNING
Insufficient tire pressure can cause the tires to burst. the driving
characteristics, as well as steering and braking, may be greatly
impaired. 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 Repair the faulty tire or change the wheel ( Ypage 269). 0077
Check Check
Tire
TirePressure
Pressure The tire pressure in one or more tires has dropped significantly. A
warning tone also sounds.
G WARNING
Insufficient tire pressure can cause the tires to burst. the driving
characteristics, as well as steering and braking, may be greatly
impaired. 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 Correct the tire pressure (Y page 255).
X If necessary, repair the faulty tire or change the wheel
(Y page 269). Displays and operation
179On-board computer and displays Z
Vehicle
Display messages Possible causes/consequences and
0050
0050Solutions 0084 The trunk lid is open.
X
Close the trunk lid. 005A 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. 00B6(Coupe only)
0051(Roadster
only) At least one door is open.
X
Close the doors. 0059
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 77).0059
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 77).0059
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 77) until the soft top is
fully open or closed. 0059
Convertible Convertible
Top
Topin
in
Operation Please
Operation Please
Wait Wait The on-board voltage is too low.
X Start the engine. 180
Displays and operationOn-board computer and displays
Display messages Possible causes/consequences and
0050
0050Solutions 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 77).0059
Depress Brake Depress Brake 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. 00B2
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 217). SmartKey
Display messages Possible causes/consequences and
0050 0050Solutions 0039
Replace Replace
Key
KeyBattery
Battery The SmartKey batteries are discharged.
X
Change the batteries ( Ypage 64). 0039
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 SmartKey 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 SmartKey into the ignition lock and turn it to the
desired position ( Ypage 113). Displays and operation
181On-board computer and displays Z
Display messages Possible causes/consequences and
0050
0050Solutions 0039
Key Not Detected Key Not Detected
(white display
message) You are in the vehicle and the SmartKey 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 SmartKey into the ignition lock and turn it to the
desired position ( Ypage 113). 0039
Obtain a New Key Obtain a New Key The SmartKey needs to be replaced.
X
Visit a qualified specialist workshop. 0039
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. 0039
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. 0039
Insert Key Insert Key The KEYLESS-GO start function 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 ( Ypage 113). 0039
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
0050 0050Solutions 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. 182
Displays and operationOn-board compu
ter and displays
Display messages Possible causes/consequences and
0050
0050Solutions 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
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 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 232).
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 232).
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. Displays and operation
183On-board computer and displays Z