The vehicle locks automatically after a
short period of time if no door is
opened after unlocking.▷"Lock after start driving"
The vehicle locks automatically after
you drive off.
Confirmation signals from the vehicle
1. "Settings"2."Doors/key"3.Select desired setting.▷With alarm system:
"Acoustic sig. lock/unlock"
Unlocking is signaled by one honk of
the horn.▷"Flash when lock/unlock"
Unlocking is signaled by two flashes,
locking by one.
Alarm system
The concept
When the vehicle is locked, the vehicle alarm
system responds to:
▷Opening a door, the hood or the trunk lid.▷Movements in the vehicle interior.▷Changes in the vehicle tilt, e. g., during at‐
tempts at stealing a wheel or when towing
the car.▷Disconnected battery voltage.
The alarm system briefly signals tampering:
▷Acoustic alarm.▷By switching on the hazard warning system.▷By flashing the daytime running lights.
Switching on and off
When you lock or unlock the vehicle, either
with the remote control or with Comfort Access,
the alarm system is switched on and off at the same time.
Door lock with the alarm system
switched on
The alarm system is triggered when the door is
opened, when the vehicle is unlocked via the
door lock.
Switching off the alarm, refer to page 45.
Tailgate with the alarm system
switched on
The tailgate can be opened even when the
alarm system is switched on.
After the trunk lid is closed, it is locked and
monitored again when the doors are locked.
The hazard warning system flashes once.
Panic mode
You can trigger the alarm system if you find
yourself in a dangerous situation.
Press button on the remote control for
at least 3 seconds.
To switch off the alarm: press any button.
Indicator lamp on the interior rearview
mirror▷The indicator lamp flashes briefly every
2 seconds:
The alarm system is switched on.▷Indicator lamp flashes for approx. 10 sec‐
onds, then it flashes briefly every 2 sec‐
onds:Seite 44CONTROLSOpening and closing44
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Interior motion sensor and tilt alarm sensor
are not active, as doors, hood, or tailgate
are not correctly closed. Correctly closed
access points are secured.
When the still open access points are
closed, interior motion sensor and tilt alarm
sensor will be switched on.▷The indicator lamp goes out after unlock‐
ing:
The vehicle has not been tampered with.▷The indicator lamp flashes after unlocking
until the engine ignition is switched on, but
no longer than approx. 5 minutes:
An alarm has been triggered.
Tilt alarm sensor The tilt of the vehicle is monitored.
The alarm system responds in situations such as
attempts to steal a wheel or when the car is
towed.
Interior motion sensor The interior is monitored to the height of the
seats. The alarm system is switched on together
with the interior motion sensor even when the
convertible top is open. Falling objects such as
leaves can trigger the alarm unintentionally.
Avoiding unintentional alarms
The tilt alarm sensor and interior motion sensor
can be switched off together, such as in the fol‐
lowing situations:
▷In automatic car washes.▷In duplex garages.▷During transport on trains carrying vehicles,
at sea or on a trailer.▷With animals in the vehicle.Switching off the tilt alarm sensor and
interior motion sensor
Press the remote control button again
within 10 seconds as soon as the vehi‐
cle is locked.
The indicator lamp lights up for approx. 2 sec‐
onds and then continues to flash.
The tilt alarm sensor and interior motion sensor
are turned off until the vehicle is locked again.
Switching off the alarm▷Unlock vehicle with the remote control or
switch on the ignition, if needed through
emergency detection of remote control, re‐
fer to page 35.▷For Comfort Access:If you have the remote
control with you, unlock vehicle using the
button on the driver's side or passenger
side door.
Power windows
Information WARNING
Unattended children or animals can
cause the vehicle to move and endanger them‐
selves and traffic, e.g., due to the following ac‐
tions:
▷Pressing the Start/Stop button.▷Releasing the parking brake.▷Opening and closing the doors or windows.▷Engaging selector lever position N.▷Using vehicle equipment.
There is risk of accidents or injuries. Do not
leave children or animals unattended in the ve‐
hicle. Take the remote control with you when
exiting and lock the vehicle. ◀
If an accident of a certain severity occurs, the
windows are automatically closed except a
gap.
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Engine stop
The engine is switched off automatically during
a stop under the following conditions:
Manual transmission:▷Neutral is engaged and the clutch pedal is
not pressed.▷The driver's safety belt is buckled or the
driver's door is closed.
Steptronic transmission:
▷The selector lever is in selector lever posi‐
tion D.▷Brake pedal remains depressed while the
vehicle is stopped.▷The driver's safety belt is buckled or the
driver's door is closed.
In order to be able to release the brake pedal,
engage lever in position P. The engine remains
off.
To continue driving depress the brake pedal.
When a gear is engaged, the engine starts au‐
tomatically.
The air flow from the air conditioner is reduced
when the engine is switched off.
Displays in the instrument cluster The display indicates that theAuto Start/Stop function is ready
for an Automatic engine start.
The display indicates that the
conditions for an automatic en‐
gine stop have not been met.
Functional limitations The engine is not switched off automatically in
the following situations:
▷External temperature too low.▷The external temperature is high and auto‐
matic climate control is running.▷The car's interior has not yet been heated
or cooled to the required level.▷The engine is not yet at operating tempera‐
ture.▷The wheels are at a sharp angle or the
steering wheel is being turned.▷After driving in reverse.▷Fogging of the windows when the auto‐
matic climate control is switched on.▷The vehicle battery charge is very low.▷At higher elevations.▷The engine compartment lid is unlocked.▷The parking assistant is activated.▷Stop-and-go traffic.▷Selector lever in selector lever position R, N
or M/S.
Starting the engine
The engine starts automatically under the fol‐
lowing conditions:
▷Manual transmission: clutch pedal is
pressed.▷Steptronic transmission: by releasing the
brake pedal.
After the engine starts, accelerate as usual.
Safety mode
After the engine switches off automatically, it
will not start again automatically if any one of
the following conditions are met:
▷The driver's safety belt is unbuckled and
the driver's door is open.▷The hood was unlocked.
Some indicator lights light up for a varied
length of time.
The engine can only be started via the Start/
Stop button.
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WARNING
The engine compartment accommodates
moving components. Certain components in
the engine compartment can also move with
the vehicle switched off, e.g., the radiator fan.
There is a a risk of injury. Do not reach into the
area of moving parts. Keep articles of clothing
and hair away from moving parts. ◀
WARNING
There are protruding parts, e.g., locking
hook, on the inside of the hood. There is a a
risk of injury. If the hood is open, pay attention
to protruding parts and keep these areas
clear. ◀
WARNING
An incorrectly locked hood can open
while driving and restrict visibility. There is risk
of an accident. Stop immediately and correctly
close the hood. ◀
WARNING
Body parts can be jammed when opening
and closing the hood. There is a a risk of injury.
Make sure that the area of movement of the
hood is clear during opening and closing. ◀
ATTENTION
Folded-away wipers can be jammed
when the hood is opened. There is a risk of
damage to property. Make sure that the wipers
with the wiper blades mounted are folded
down onto the windshield before opening the
hood. ◀
Opening the hood1.Pull lever, arrow 1.Hood is unlocked.2.After the lever is released, pull the lever
again, arrow 2.
Hood can be opened.
Indicator/warning lights
When the hood is opened, a Check Control
message is displayed.
Closing the hood
Let the hood fall from approx. 16 inches/40 cm,
arrow.
The hood must engage on both sides.
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ATTENTION
Too much engine oil can damage the en‐
gine or the catalytic converter. There is a risk of
damage to property. Do not add too much en‐
gine oil. When too much engine oil is added,
have oil level corrected by a dealer’s service
center or another qualified service center or re‐
pair shop. ◀
Detailed measurement
The concept
In the detailed measurement the engine oil
level is checked when the vehicle is stationary,
and displayed via a scale.
If the engine oil level reaches the minimum
level, a check control message is displayed.
During the measurement, the idle speed is in‐
creased somewhat.
Requirements▷Vehicle is parked in a horizontal position.▷Manual transmission: shift lever in neutral
position, clutch and accelerator pedals not
depressed.▷Steptronic transmission: selector lever in se‐
lector lever position N or P and accelerator
pedal not depressed.▷Engine is running and is at operating tem‐
perature.
Performing a detailed measurement
On the Control Display:
1. "Vehicle info"2."Vehicle status"3. "Measure engine oil level"4."Start measurement"
The engine oil level is checked and displayed
via a scale.
Time: approx. 1 minute.
Adding engine oil
Information WARNING
Operating materials, e.g., oils, greases,
coolants, fuels, can contain harmful ingredi‐
ents. There is a risk of injury or danger to life. Observe the instructions on the containers.Avoid the contact of articles of clothing, skin or
eyes with operating materials. Do not refill op‐
erating materials into different bottles. Store
operating materials out of reach of children. ◀
ATTENTION
Too low of an engine oil level causes en‐
gine damage. There is a risk of damage to
property.
Add engine oil within the next
125 miles/200 km. ◀
ATTENTION
Too much engine oil can damage the en‐
gine or the catalytic converter. There is a risk of
damage to property. Do not add too much en‐
gine oil. When too much engine oil is added,
have oil level corrected by a dealer’s service
center or another qualified service center or re‐
pair shop. ◀
General information
Only add engine oil when the message is dis‐ played in the instrument cluster. The quantity
to be added is indicated in the message dis‐
played in the instrument cluster.
Switch off the ignition and safely park the vehi‐
cle before engine oil is added.
Overview The oil filler neck is located in the engine com‐
partment, refer to page 198.
Opening the oil filler neck1.Open the hood, refer to page 198.Seite 201Engine oilMOBILITY201
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CoolantVehicle features and op‐
tions
This chapter describes all standard, country-
specific and optional features offered with the
series. It also describes features that are not
necessarily available in your car, e. g., due to
the selected options or country versions. This
also applies to safety-related functions and sys‐
tems. The respectively applicable country provi‐
sions must be observed when using the respec‐
tive features and systems.
Information WARNING
With the engine hot and the cooling sys‐
tem open, coolant can escape and lead to
scalding. There is a a risk of injury. Only open
the cooling system with the engine cooled
down. ◀
WARNING
Additives are harmful and incorrect addi‐
tives can damage the engine. There is a risk of
injury and risk of property damage. Do not al‐
low additives to come into contact with skin,
eyes or articles of clothing. Use suitable addi‐ tives only. ◀
Coolant consists of water and additives.
Not all commercially available additives are
suitable for the vehicle. Information about suit‐
able additives is available from a dealer’s serv‐
ice center or another qualified service center or
repair shop.Coolant level
Overview
Open the hood, refer to page 198.
The coolant reservoir is in the engine compart‐ ment, refer to page 198.
Checking
There are yellow Min and Max marks in the
coolant reservoir.1.Let the engine cool.2.Turn the lid of the coolant reservoir slightly
counterclockwise to allow any excess pres‐
sure to dissipate, then open it.3.The coolant level is correct if it lies between
the minimum and maximum marks in the
filler neck.Seite 204MOBILITYCoolant204
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Replacing componentsVehicle features and op‐
tions
This chapter describes all standard, country-
specific and optional features offered with the
series. It also describes features that are not
necessarily available in your car, e. g., due to
the selected options or country versions. This
also applies to safety-related functions and sys‐
tems. The respectively applicable country provi‐
sions must be observed when using the respec‐
tive features and systems.
Onboard vehicle tool kit
The onboard vehicle tool kit is located in the
trough under the trunk floor.
Wiper blade replacement Information ATTENTION
If the wiper arm falls onto the windshield
without the wiper blades installed, the wind‐
shield can be damaged. There is a risk of dam‐
age to property. Secure the wiper arm when re‐
placing the wiper blades and do not fold down
the wipers without the wiper blades installed. ◀
ATTENTION
Folded-away wipers can be jammed
when the hood is opened. There is a risk of
damage to property. Make sure that the wipers
with the wiper blades mounted are folded
down onto the windshield before opening the
hood. ◀
Replacing the wiper blades1.To change the wiper blades, fold up, refer
to page 74, the wiper arms.2.Fold up and hold the wiper arm firmly.3.Open the wiper blade lock, arrow.4.Pull the wiper blade down first out of the
holder on the wiper arm, arrow 1.
Then pull the wiper blade free from the
holder of the wiper arm, arrow 2.5.Insert and latch a new wiper blade in re‐
verse order.6.Fold down the wipers.Seite 208MOBILITYReplacing components208
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LED headlights1Daytime running lights2Low beams/high beams3Turn signal
Bug light
1Parking lights2Daytime running lights3Fog lights
LED bug light
1Parking lights2Fog lightsLED low beams/LED high beamsFollow the general instructions on lights and
bulbs, refer to page 209.
The lights feature LED technology. In the case
of a malfunction, contact a dealer’s service cen‐
ter or another qualified service center or repair
shop.
Halogen low beams/halogen high
beams
Follow the general instructions on lights and
bulbs, refer to page 209.
Bulbs: H41.Open the hood, refer to page 199.2.Turn the lid counterclockwise, arrow, and
remove.3.Pull off the connector.4.Unclip spring clip, arrow, and fold down.5.Remove the bulb from the headlight hous‐
ing.6.Insert the new bulb and install the cover in
the reverse order.Seite 210MOBILITYReplacing components210
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