Display messages Possible causes/consequences and
M SolutionsThe yellow
F (USA only)/ ! (Canada only) warning lamp
lights up. The red F (USA only)/ ! (Canada only) indicator
lamp flashes for approximately 10 seconds after the electric
parking brake has been applied or released. It then goes out or
remains lit.
The electric parking brake has overheated.
X Allow the vehicle to cool down. Do not engage or release the
electric parking brake during this time.
X Use the folding wheel chock (Y
page 474) from the vehicle tool
kit to secure the vehicle against rolling away.
X When the vehicle has cooled down: switch the ignition off and
on again, then engage or release the electric parking brake. F(USA
only)!(Canada
only)
Parking Brake
Inoperative The yellow
F (USA only)/ ! (Canada only) warning lamp
lights
up. The red F (USA only)/ ! (Canada only) indicator
lamp flashes for approximately 10 seconds after the electric
parking brake has been applied or released. It then goes out or
remains lit.
The electric parking brake is malfunctioning.
X Switch the ignition off and on, and then engage the electric
parking brake.
If it is not possible to engage the electric parking brake:
X Shift the transmission to P.
X Use the folding wheel chock (Y
page 474) from the vehicle tool
kit to secure the vehicle against rolling away.
X Consult a qualified specialist workshop. F(USA
only)!(Canada
only)
Turn On the
Ignition to
Release the
Parking Brake The red
F
(USA only)/ ! (Canada only) indicator lamp lights
up.
You attempted to release the electric parking brake while the
ignition was switched off.
X SmartKey:
turn the SmartKey to position 1 in the ignition lock.
X KEYLESS-GO: switch on the ignition. Display messages
395
On-board computer and displays Z
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
Problem Possible causes/consequences and
M Solutions!
The
yellow ABS warning
lamp is lit while the
engine is running. G
Risk of accident
ABS (Anti-lock Brake System) is deactivated due to a malfunction.
BAS (Brake Assist), BAS PLUS, ESP ®
(Electronic Stability
Program), PRE-SAFE ®
, PRE-SAFE ®
Brake, the HOLD function and
hill start assist are therefore also deactivated, for example.
The
brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
ATTENTION ASSIST 22
is deactivated.
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit a qualified specialist workshop. !
The
yellow ABS warning
lamp is lit while the
engine is running. G
Risk of accident
ABS is temporarily unavailable. BAS, BAS PLUS, ESP ®
, EBD
(electronic brake force distribution), PRE-SAFE ®
,
PRE-SAFE ®
Brake, the HOLD function, hill start assist are therefore
also deactivated, for example.
Self diagnosis is not yet complete or the on-board voltage may be
insufficient, for example.
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
ATTENTION ASSIST 22
is deactivated.
X Carefully drive a suitable distance making slight steering
movements at a speed above 12 mph (20 km/h).
The functions mentioned above are available again when the
warning lamp goes out.
If the warning lamp is still on:
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit a qualified specialist workshop. 22
Not available on hybrid vehicles. Warning and indicator lamps in the instrument cluster
423On-board computer and displays Z
Problem Possible causes/consequences and
M Solutions!
The
yellow ABS warning
lamp is lit while the
engine is running. A
warning tone also
sounds. G
Risk of accident
EBD is faulty. Therefore, ABS, BAS, BAS PLUS, ESP ®
, PRE-SAFE ®
,
PRE-SAFE ®
Brake, the HOLD function and hill start assist are also
unavailable, for example.
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
ATTENTION ASSIST 22
is deactivated.
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit a qualified specialist workshop. $ (USA only)
J (Canada only)
֌!
The red brake warning
lamp, the yellow ESP
®
and ESP ®
OFF warning
lamps and the yellow
ABS warning lamp are
lit while the engine is
running. G
Risk of accident
ABS and ESP ®
are faulty. Other systems, e.g. BAS, BAS PLUS, EBD,
PRE-SAFE ®
, PRE-SAFE ®
Brake, the HOLD function and hill start
assist, are also not available due to a malfunction.
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
ATTENTION ASSIST 22
is deactivated.
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit a qualified specialist workshop. ÷
The yellow ESP
®
warning lamp flashes
while the vehicle is in
motion. G
Risk of accident
ESP ®
or traction control has intervened because there is a risk of
skidding or at least one wheel has started to spin.
Cruise control or DISTRONIC PLUS is deactivated.
X Only depress the accelerator pedal as far as necessary when
pulling away.
X Ease off the accelerator pedal while the vehicle is in motion.
X Adapt your driving style to suit the road and weather conditions.
X Do not deactivate ESP ®
.
Exceptions:
(Y page 71). 22
Not available on hybrid vehicles.424
Warning and indicator lamps in the instrument cluster
On-board computer and displays
Problem Possible causes/consequences and
M Solutionså
The yellow ESP
®
OFF
warning
lamp is lit while
the engine is running. G
Risk of accident
ESP ®
is deactivated. ESP ®
will not stabilize the vehicle if it starts
to skid or if a wheel starts to spin.
X Reactivate ESP ®
.
Exceptions:
(Y page 71).
X Adapt your driving style to suit the road and weather conditions.
If ESP ®
cannot be activated:
X Have ESP ®
checked at a qualified specialist workshop. ֌
The yellow ESP
®
and
ESP ®
OFF warning
lamps are lit while the
engine is running. G
Risk of accident
ESP ®
, BAS, BAS PLUS, PRE-SAFE ®
, PRE-SAFE ®
Brake, the HOLD
function
and hill start assist are not available due to a malfunction.
ESP ®
will not stabilize the vehicle if it starts to skid or if a wheel
starts to spin.
The brake system continues to function normally, but without the
functions listed above.
ATTENTION ASSIST 22
is deactivated.
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit a qualified specialist workshop. 22
Not available on hybrid vehicles. Warning and indicator lamps in the instrument cluster
425
On-board computer and displays Z
Problem Possible causes/consequences and
M Solutions֌
The yellow ESP
®
and
ESP ®
OFF warning
lamps are lit while the
engine is running. G
Risk of accident
ESP ®
, BAS, PRE-SAFE ®
, the HOLD function and hill start assist are
temporarily unavailable.
BAS PLUS and PRE-SAFE ®
Brake may also have failed.
ESP ®
will not stabilize the vehicle if it starts to skid or if a wheel
starts to spin.
Self diagnosis is not yet complete.
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
ATTENTION ASSIST 22
is deactivated.
X Carefully drive a suitable distance making slight steering
movements at a speed above 12 mph (20 km/h).
The functions mentioned above are available again when the
warning lamp goes out.
If the warning lamp is still on:
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit a qualified specialist workshop. F (USA only)
! (Canada only)
The red 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.
X
Observe the additional display messages in the multifunction
display. 6
The red SRS warning
lamp is lit while the
engine is running.
G
Risk of injury
The restraint systems are malfunctioning. The air bags or ETDs
may either be triggered unintentionally or, in the event of an
accident, not be triggered at all.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. 22
Not available on hybrid vehicles.426
Warning and indicator lamps in the instrument cluster
On-board computer and displays