Activating/deactivating PRE-SAFE
®
Brake PRE-SAFE
®
Brake is only available in vehicles
with DISTRONIC PLUS.
X Press the 0004or0008 button on the
steering wheel to select the DriveAssistmenu.
X Press the 0006or0007 buttonto select
PRE-SAFE Brake .
X Press 000F.
The current selection is displayed.
X To activate/deactivate: press000F
again.
When PRE-SAFE ®
Brake is activated, the
multifunction display shows the 0001symbol
as long as the HOLD function is not activated
(Y page 195).
Vehicles with Active Parking Assist: if
PARKTRONIC is activated and you are driving
at a speed under 22 mph (35 km/h), the 0014
Active Parking Assist symbol is shown instead
of the 0001symbol (Y page 206).
For more information on PRE-SAFE ®
Brake,
see (Y page 79).
Activating/deactivating ATTENTION
ASSIST X
Press the 0004or0008 button on the
steering wheel to select the DriveAssistmenu.
X Press the 0006or0007 button to select
Attention Asst. X
Press 000F.
The current selection is displayed.
X To activate/deactivate: press000F
again.
When ATTENTION ASSIST is activated, the
0003 symbol appears in the multifunction
display when the ignition is on.
For further information about ATTENTION
ASSIST, see (Y page 213). Activating/deactivating Active Blind
Spot Assist X
Press the 0004or0008 button on the
steering wheel to select the DriveAssist menu.
X Press the 0006or0007 button to select
Blind Spot Asst. .
X Press 000F.
The current selection is displayed.
X To activate/deactivate: press000F
again.
For further information about Active Blind
Spot Assist, see (Y page 214).
Activating/deactivating Active Lane
Keeping Assist X
Press the 0004or0008 button on the
steering wheel to select the DriveAssist menu.
X Press the 0006or0007 button to select
Lane Keep. Asst. X
Press 000F.
The current selection is displayed.
X Press the 000Fbutton to confirm.
X Press 0007or0006 to set Off ,
Standard or
Adaptive .
X Press the 000Fbutton to save the setting.
When Active Lane Keeping Assist is activated,
the 0001 symbol appears in the multifunction
display when the ignition is on.
For further information about Active Lane
Keeping Assist, see (Y page 218). Maintenance menu Menus and submenus
231On-board computer and displays Z
Display messages Possible causes/consequences and
0003 Solutions
000B
Inoperative See
Operator's Manual ESP
®
,B AS, PRE-SAFE ®
, the HOLD functio nand hill start assist are
unavailable due to a malfunction.
BAS PLUS and PRE-SAFE ®
Brake may also have failed.
In addition, the 000Band0013 warning lamps light up in the
instrument cluster.
ATTENTION ASSIST is deactivated.
G WARNING
The brake system continue sto function normally, but without the
functions listed above.
The braking distance in an emergency braking situation can thus
increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Drive on carefully.
X Visit a qualified specialist workshop. 00080015
000B
Inoperative See
Operator's Manual EBD (electronic brake force distribution), ABS, ESP
®
, BAS, PRE-
SAFE ®
, the HOLD function and hill start assist are unavailable due
to a malfunction.
BAS PLUS and PRE-SAFE ®
Brake may also have failed.
In addition, the 000B,0013and0015 warning lamps light up in
the instrument cluster and a warning tone sounds.
G WARNING
The brake system continues to function normally, but without the
functions listed above. The front and rear wheels could therefore
lock if you brake hard, for example.
The steerability and braking characteristics may be severely
affected. The braking distance in an emergency braking situation
can increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. 0005(USA
only)000B(Canada
only)
Please Release Parking Brake The red
0005(USA only)/000B (Canada only) indicator lamp
flashes and a warning tone sounds. Acondition for automatic
release of the electric parking brake is not fulfilled (Y page 176).
You are driving with the electric parking brake applied.
X Release the electric parking brake manually. Display messages
243On-board computer and displays Z
Display messages Possible causes/consequences and
0003 Solutions
The red
0005(USA only)/ 000B(Canada only) indicato rlamp
flashes and a warning tone sounds.
You are using the electric parking brake for emergency braking
(Y page 176). 0005(USA
only)000B
(Canada
only)
Parking Brake See Operator's Manual The yellow
000Bwarning lamp lights up.
The electric parking brake is malfunctioning.
To apply:
X Switch the ignition off.
X Press the electric parking brake handle for at least te nseconds.
X Shift the transmission to P.
X Consult a qualified specialist workshop. The yellow
000Bwarning lamp and the red 0005(USA
only)/000B (Canada only) indicator lamp light up.
The electric parking brake is malfunctioning.
To release:
X Switch off the ignition and turn it back on.
X Release the electric parking brake manually.
or
X Release the electric parking brake automatically ( Ypage 176).
If the yellow 000Bwarning lamp remains lit or continues to flash:
X Do not drive on.
X Consult a qualified specialist workshop. 244
Display messagesOn-board computer and displays
Display messages Possible causes/consequences and
0003 Solutions
0005(USA
only)
000B(Canada
only)
Parking Brake Inoperative The yellow
000Bwarning lamp lights up. The red 0005(USA
only)/ 000B(Canada only) indicato rlamp flashes for about ten
seconds after the electric parking brake has been applied or
released. It then goes out or remains lit.
The electric parking brake is malfunctioning, e.g .because of
overvoltage or undervoltage.
X Remove the cause for the overvoltage or undervoltage, e.g. by
charging the battery or restarting the engine.
X Engage or release the electric parking brake.
If it remains impossible to apply or release the electric parking
brake:
X Switch off the ignition and turn it back on.
X Engage or release the electric parking brake.
If the electric parking brake still cannot be released:
X Consult a qualified specialist workshop. The display message is only shown while the vehicle is in motion.
The yellow
000Bwarning lamp lights up and the red 0005(USA
only)/ 000B(Canada only) indicator lamp flashes.
It is not possible to apply the electric parking brake manually.
X Shift the transmission to P.
X Visit a qualified specialist workshop. 0005(USA
only)000B(Canada
only) The red
0005(USA only)/000B (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 1in the ignition lock.
X KEYLESS-GO: switch on the ignition. Display messages
245On-board computer and displays Z
Display messages Possible causes/consequences and
0003 Solutions
0001
Check Left Mirror
Turn Signal or
Check Right Mirror
Turn Signal The turn signal in the left-hand or right-hand exterior mirror is
defective.
X
Visit a qualified specialist workshop. 0001
Check
Center Brake
Lamp The high-mounted brake lamp is faulty.
X
Visit a qualified specialist workshop. 0001
Check Left Brake
Lamp or
Check Right Brake Lamp The lef
torright-hand brake lamp is defective.
X Visit a qualified specialist workshop. 0001
Check Left Tail
and Brake Lamps or
Check Right Tail and Brake Lamps The left or right-hand tail lamp/brake lamp is defective.
X
Visit a qualified specialist workshop. 0001
Check Left High
Beam or
Check Right High Beam The left or right-hand high beam is defective.
X
Visit a qualified specialist workshop. 0001
License Plate Lamp The left or right-hand license plate lamp is defective.
X
Visit a qualified specialist workshop. 0001
Rear Fog Lamp The rear fog lamp is defective.
X
Visit a qualified specialist workshop. 0001
Check Front Left
Parking Lamp or
Check Front Right Parking Lamp The front left or front right parking or standing lamp is defective.
X
Visit a qualified specialist workshop. 0001
Backup Light The backup lamp is defective.
X
Visit a qualified specialist workshop. 252
Display messagesOn-board computer and displays
Display messages Possible causes/consequences and
0003 Solutions
0017
Check
Tire Pressure The tire pressure in one or more tires has dropped significantly.
G WARNING
With tire pressures which are too low, there is a ris kofthe
following hazards:
R they may burst, especially as the load and vehicle speed
increase.
R they may wear excessively and/or unevenly, which may greatly
impair tire traction.
R 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 Secure the vehicle against rolling away (Y page 175).
X If there is a flat tire, inspect the tires (Y page 527).
X Check the tire pressure (Y page 552).
X If necessary, correct the tire pressure. 0017
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 (Y page 552).
X If necessary, correct the tire pressure. Vehicle
Display messages Possible causes/consequences and
0003 Solutions
Shift to 'P' or 'N'
to Start Engine You have attempted to start the engine with the transmission in
position
Ror D.
X Shift the transmission to position Por N. Auxiliary Battery
Malfunction The auxiliary battery for the automatic transmission is no longer
being charged.
X
Visit a qualified specialist workshop at the next opportunity.
X Until then, set the automatic transmission to position Pbefore
you switch off the engine.
X Before leaving the vehicle, apply the electric parking brake.
X Secure the vehicle against rolling away (Y page 175). Display messages
265On-board computer and displays Z
Problem Possible causes/consequences and
0003 Solutions
0005
(USA only)
000B (Canada only)
The red electric parking
brake indicator lamp
flashes or lights up
and/or
000B
warning lamp for the
electric parking brake
lights up. X
Observe the additional display messages in the multifunction
display. 001B
The red SRS warning
lamp is lit while the
engine is running.
There is a malfunction in the SRS (Supplemental Restraint
System).
G WARNING
The air bags or Emergency Tensioning Devices may either be
triggered unintentionally or, in the event of an accident, may not
be triggered.
There is an increased risk of injury.
X Drive on carefully.
X Have SRS checked at a qualified specialist workshop
immediately.
For further information about the Supplemental Restraint System,
see (Y page 53). 276
Warning and indicator lampsOn-board computer and displays
Jump-starting
G
WARNING
Failure to follow these directions will cause damage to the electronic components, and can lead
to a battery explosion and severe injury or death.
Never lean over batteries while connecting or jump starting. You might get injured.
Battery fluid contains sulfuric acid. Do not allow this fluid to come in contact with eyes, skin or
clothing. In case it does, immediately flush affected area with water, and seek medical help if
necessary.
Ab attery will also produce hydrogen gas, which is flammable and explosive. Keep flames or
sparks away from battery, avoid improper connectio nofjumpe rcables, smoking, etc.
Attempting to jump start a frozen battery can result in it exploding, causing personal injury.
Read all instructions before proceeding. G
WARNING
Non-combusted fuel can collect in the exhaust system and ignite. There is a risk of fire. Avoid
repeated and lengthy starting attempts.
! Avoid repeated and lengthy starting attempts. Otherwise, the catalytic converte rcould be
damaged by the non-combusted fuel.
Do not start the vehicle using a rapid charging device. If your vehicle's battery is discharged,
the engine can be jump-started from another vehicle or from a second battery using jumper
cables. Observe the following points:
R The battery is not accessible in all vehicles. If the other vehicle's battery is not accessible,
jump-start the vehicle using a second battery or ajump-starting device.
R You may only jump-start the vehicle when the engine and exhaust system are cold.
R Do not start the engine if the battery is frozen. Let the battery thaw first.
R Only jump-start from batteries with a 12 V voltage rating.
R Only use jumper cables which have a sufficien tcross-section and insulated terminal clamps.
R If the battery is fully discharged, leave the battery that is being used to jump-start connected
for a few minutes before attempting to start. This charges the battery slightly.
R Make sure that the two vehicles do not touch.
Make sure that:
R the jumper cables are not damaged.
R when the jumper cables are connected to the battery, uninsulated sections of the terminal
clamp do not come into contact with other metal sections.
R the jumper cables cannot come into contact with parts such as the V-belt pulley or the fan.
These parts move when the engine is started and while it is running.
X Secure the vehicle by applying the electric parking brake.
X Shift the transmission to position P.
X Turn the SmartKey to position 0in the ignitio nlock and remove it (Y page 155). On vehicles
with KEYLESS-GO, make sure the ignition is switched off (Y page 155). All indicator lamps
in the instrument cluster must be off. 534
Jump-startingBreakdown assistance