2013 MERCEDES-BENZ S-CLASS SEDAN Owners Manual

Display messages Possible causes/consequences and
M SolutionsCruise Control
Inoperative Cruise control is defective.
A warning tone also sounds.
X
Visit a qualified specialist workshop. Cruise Control
--- 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 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 330). Tires
G
WARNING
Do not drive with a flat tire. A flat tire affects the ability to steer or brake the vehicle. You may
lose control of the vehicle. Continued driving with a flat tire will cause excessive heat build-up
and possibly a fire. G
WARNING
Follow recommended tire inflation pressures.
Do
not underinflate tires. Underinflated tires wear excessively and/or unevenly, adversely affect
handling and fuel economy, and are more likely to fail from being overheated.
Do not overinflate tires. Overinflated tires can adversely affect handling and ride comfort, wear
unevenly, increase stopping distance, and result in sudden deflation (blowout) because they are
more likely to become punctured or damaged by road debris, potholes etc. Display messages Possible causes/consequences and
M SolutionsTire pressures
Displayed After
Driving A Few
Minutes The tire pressure monitor is measuring the tire pressure.
X
Drive on.
The

tire pressures appear in the multifunction display after you
have been driving for a few minutes. Tire Pressure
Monitor
Inoperative The tire pressure monitor is defective.
X
Visit a qualified specialist workshop. Tire Pressure
Monitor
Inoperative No
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. Display messages
415
On-board computer and displays Z

Display messages Possible causes/consequences and
M SolutionsCheck
Tires
G
Risk of accident
The tire pressure in one or more tires has dropped significantly.
The wheel position is displayed in the multifunction display.
A warning tone also sounds.
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 497).
X If necessary, change a wheel ( Y page 513).Caution
Tire Defect
G
Risk of accident
The tire pressure in one or more tires has dropped suddenly. The
wheel position is displayed in the multifunction display.
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 a wheel ( Y page 513).Tire Pressure
Please Rectify 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 497).
X Restart the tire pressure monitor (Y page 499). 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 displayed in the
multifunction display.
X
Have the defective tire pressure sensor replaced at a qualified
specialist workshop. Tire Pressure
Monitor
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.
X
Drive on.
The

tire pressure monitor restarts automatically as soon as the
problem has been solved. h
Tire Press.
Warning Caution
Tire Malfunction G
Risk of accident
The tire pressure in one or more tires has dropped suddenly.
A warning tone also sounds.
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 a wheel ( Y page 513).416
Display messages
On-board computer and displays

Display messages Possible causes/consequences and
M Solutionsh
Check
Tire Pressure G
Risk of accident
The tire pressure in one or more tires has dropped significantly.
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 a wheel ( Y page 513).
X Check the tire pressure. If necessary, correct the tire pressure
(Y page 497). h
Correct 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 497).Vehicle
Display messages Possible causes/consequences and
M SolutionsShift to P or N
to Start Engine You have attempted to start the engine with the transmission in
position R or D.
X
Shift the transmission to position P or N.Auxiliary Battery
Malfunction
(White display
message) The auxiliary battery for the automatic transmission is no longer
being charged.
X
Visit a qualified specialist workshop. Auxiliary Battery
Malfunction
(Red display message) The auxiliary battery for the automatic transmission is discharged.
If

there is a malfunction in the vehicle's electrical system, you may
not be able to change the transmission position.
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 Consult a qualified specialist workshop. Apply Brake to
Shift from 'P' You have attempted to move the transmission selector lever to
position D, R or N without depressing the brake pedal.
X
Depress the brake pedal. Door Open
Vehicle

Not in Park The driver's door is open and the transmission is in position
R, N
or D.
X Shift the transmission to position P.
X Apply the electric parking brake. Display messages
417
On-board computer and displays Z

Display messages Possible causes/consequences and
M SolutionsService Required
Do Not Shift Gears You cannot change the transmission position due to a malfunction.
A warning tone also sounds.
If transmission position
D is selected:
X Drive to a qualified specialist workshop without shifting the
transmission from position D.
If transmission position R, N or P is selected:
X Notify a qualified specialist workshop or breakdown service. Only Shift to
Position P When
Vehicle Is
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 The trunk lid is open.
X
Close the trunk lid. M G
Risk of accident
The hood is open.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Apply the electric parking brake.
X Close the hood. C At least one door is open.
X
Close all the doors. D
Power Steering
Malfunction See
Oper. Manual G
Risk of accident
The power steering is malfunctioning.
You will need to use more force to steer.
X Check whether you are able to apply the extra force required.
X If you are able to steer safely: carefully drive on to a qualified
specialist workshop.
X If you are unable to steer safely:
do not drive on. Contact the
nearest qualified specialist workshop. ¥
Check Washer Fluid The washer fluid level in the washer fluid reservoir has dropped
below the minimum.
X
Add washer fluid ( Y page 461).418
Display messages
On-board computer and displays

SmartKey
Display messages Possible causes/consequences and
M SolutionsÂ
Key Does Not
Belong to Vehicle You have put the wrong SmartKey in the ignition lock.
X
Use the correct SmartKey. Â
Take
Your Key From
Ignition The SmartKey is in the ignition lock.
X
Remove the SmartKey. Â
Obtain a New Key The SmartKey needs to be replaced.
X
Visit a qualified specialist workshop. Â
Replace

Key Battery The batteries of the KEYLESS-GO key are discharged.
X
Change the batteries ( Y page 82).Â
Don't Forget Your
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
(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 Engage the electric parking brake.
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 Engage the electric parking brake.
X Operate the vehicle with the SmartKey in the ignition lock. Display messages
419
On-board computer and displays Z

Display messages Possible causes/consequences and
M SolutionsÂ
Key Not Detected
(White display
message) The KEYLESS-GO key cannot be detected at present.
X
Change the location of the key 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
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'
Button and Insert
Key KEYLESS-GO is temporarily malfunctioning or is defective.
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
Lock Vehicle At least one door is open. A warning tone also sounds.
X
Close all doors and lock the vehicle again. Warning and indicator lamps in the instrument cluster
Seat belt
Problem Possible causes/consequences and
M Solutions7
After starting the
engine, the red seat
belt
warning lamp lights
up for six seconds. The seat belt warning lamp reminds the driver and front passenger
to fasten their seat belts.
X
Fasten your seat belt ( Y page 57).7
After starting the
engine, the red seat
belt

warning lamp lights
up. In addition, a
warning tone sounds
for up to six seconds. G
Risk of injury
The driver's seat belt is not fastened.
X Fasten your seat belt ( Y page 57).
The warning tone ceases. 420
Warning and indicator lamps in the instrument cluster
On-board computer and displays

Problem Possible causes/consequences and
M Solutions7
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.
G
Risk of injury
The driver or front passenger has not fastened their seat belt.
X Fasten your seat belt ( Y page 57).
The warning lamp goes out. G
Risk of injury
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. 7
The red seat belt
warning lamp flashes
and an intermittent
audible warning
sounds.
G
Risk of injury
The driver or front passenger has not fastened their seat belt. In
addition, you are driving faster than 15 mph (25 km/h) or you have
briefly driven faster than 15 mph (25 km/h).
X Fasten your seat belt ( Y page 57).
The warning lamp goes out and the intermittent warning tone
ceases. G
Risk of injury
There are objects on the front-passenger seat. In addition, you are
driving faster than 15 mph (25 km/h
) or you 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. Warning and indicator lamps in the instrument cluster
421
On-board computer and displays Z

Safety systems
Problem Possible causes/consequences and
M Solutions$ (USA only)
J (Canada only)
The red brake system
warning
lamp comes on
while the engine is
running. A warning tone
also sounds. G
Risk of accident
There is not enough brake fluid in the brake fluid reservoir.
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 Engage the electric parking brake.
X Consult a qualified specialist workshop immediately.
X Observe the additional display messages in the multifunction
display.
Do not add brake fluid. This will not rectify the malfunction. G
WARNING
Driving with the brake warning lamp illuminated can result in an accident. Have your brake system
checked
immediately if the brake warning lamp stays on. Do not add brake fluid before checking
the brake system.
Overfilling the brake fluid reservoir can result in spilling brake fluid on hot engine parts and the
brake fluid catching fire. You can be seriously burned. 422
Warning and indicator lamps in the instrument cluster
On-board computer and displays