ECU MERCEDES-BENZ CLK350 2007 A209 Owner's Manual

Contents
Safety and Security........................... 63
Occupant safety................................... 64
Air bags .......................................... 65
Occupant Classification System ..... 71
Seat belts ....................................... 75
Active head restraints .................... 80
Roll bars ......................................... 81
Children in the vehicle .................... 82
Blocking of rear
side window operation ................... 86
Panic alarm .......................................... 87
Activating ....................................... 87
Deactivating ................................... 87
Driving safety systems ......................... 88
ABS ................................................ 88
BAS ................................................ 90
ESP
®............................................... 90
Anti-theft systems................................ 95
Immobilizer..................................... 95
Anti-theft alarm system .................. 95
Controls in detail............................... 97
Locking and unlocking ......................... 98
SmartKey ....................................... 98
SmartKey with KEYLESS-GO* ...... 101
Checking the batteries in the
SmartKey or
SmartKey with KEYLESS-GO* ...... 107
Loss of the
SmartKey or
SmartKey with KEYLESS-GO* ...... 107
Opening the doors
from the inside ............................. 108
Opening the trunk ........................ 109
Closing the trunk.......................... 110
Trunk emergency release ............. 116
Valet locking ................................ 117
Automatic central locking ............ 117
Locking and unlocking
from the inside ............................. 118
Seats ................................................. 119
Front seat active head restraints . 119
Rear seat head restraints ............. 119
Multicontour seat* ....................... 121
Seat heating* ............................... 122
Seat ventilation* .......................... 123Memory function ............................... 124
Storing positions into memory ..... 125
Recalling positions from memory. 125
Lighting ............................................. 126
Exterior lamp switch .................... 126
Combination switch ..................... 130
Corner-illuminating front
fog lamps* (With Bi-Xenon*
headlamps only)........................... 131
Hazard warning flasher ................ 133
Interior lighting ............................ 134
Door entry lamps ......................... 135
Trunk lamp ................................... 135
Instrument cluster ............................. 136
Adjusting
instrument cluster illumination .... 136
Coolant temperature indicator ..... 137
Resetting trip odometer ............... 137
Tachometer.................................. 138
Clock............................................ 138
Outside temperature indicator ..... 138
Control system .................................. 139
Multifunction display.................... 139
Multifunction steering wheel........ 140
Menus .......................................... 142
Standard display menu ................ 145

14 Introduction
Where to find it
This Operator’s Manual is designed to pro-
vide comprehensive support information
for you, the vehicle operator. Each section
has its own reference color.
At a glance
Here you will find an overview of all the
controls that can be operated from the
driver’s seat.
Getting started
Here you will find all the information you
need for your first drive. You should read
this section first if this is your first
Mercedes-Benz vehicle or if you are rent-
ing or borrowing this vehicle.
Safety and Security
Here you will find descriptions of the safety
and security features of your vehicle.
Controls in detail
Here you will find detailed information
about the equipment installed in your vehi-
cle. This section expands on the “Getting
started” section and also describes techni-
cal innovations. If you are already familiar
with the basic functions of your vehicle,
this section will be of particular interest to
you.
Operation
Here you will find all the information you
need for the proper operation of your
vehicle.
Practical hints
This section provides fast assistance for
dealing with problems you may encounter.
Technical data
All important technical data for your vehi-
cle can be found in this section.
Indexes
The table of contents and the index are de-
signed to help you find information quickly
and easily.
The following publications are part of your
vehicle documentation:

this Operator’s Manual

the Maintenance Booklet
Separate operating instructions will be
provided as required depending on the
equipment options installed in your
vehicle.

39 Getting started
Adjusting
Adjusting
Seats
Warning!G
All seat, head restraint, steering wheel, and
rear view mirror adjustments, as well as fas-
tening of seat belts, must be done before
the vehicle is put into motion.
Warning!G
Do not adjust the driver’s seat while driving.
Adjusting the seat while driving could cause
the driver to lose control of the vehicle.
Never ride in a moving vehicle with the seat
back in an excessively reclined position as
this can be dangerous. You could slide un-
der the seat belt in a collision. If you slide
under it, the belt would apply force at the ab-
domen or neck. That could cause serious or
fatal injuries. The seat back and seat belts
provide the best restraint when the wearer
is in a nearly upright position and belts are
properly positioned on the body.
Your seat must be adjusted so that you can
correctly fasten your seat belt (
page 47).
Never place hands under the seat or near
any moving parts while a seat is being
adjusted.
Warning!G
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock the vehicle.
Even with the SmartKey or SmartKey with
KEYLESS-GO* removed from the starter
switch, or the SmartKey with KEYLESS-GO*
removed from the vehicle, the power seats
can be operated when the respective door is
open. Therefore, do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. Unsupervised use of vehi-
cle equipment may cause an accident
and/or serious personal injury.
Warning!G
According to accident statistics, children
are safer when properly restrained in the
rear seating positions than in the front seat-
ing position. Thus, we strongly recommend
that children be placed in the rear seats
whenever possible. Regardless of seating
position, children 12 years old and under
must be seated and properly secured in an
appropriate infant, or toddler restraint, or
booster seat recommended for the size and
weight of the child. For additional
information, see “Children in the vehicle”
(
page 82).
A child’s risk of serious or fatal injuries is
significantly increased if the child restraints
are not properly secured in the vehicle
and/or the child is not properly secured in
the child restraint.

47 Getting started
Driving
Driving
Fastening the seat belts
Warning!G
Make sure that absolutely no objects are ob-
structing the pedals’ range of movement.
Keep the driver’s footwell clear of all obsta-
cles. If there are any floormats or carpets in
the footwell, make sure that the pedals still
have sufficient clearance.
During sudden driving or braking maneu-
vers, the objects could get caught between
or beneath the pedals. You could then no
longer brake or accelerate. This could lead
to accidents and injury.
Warning!G
Always fasten your seat belt before driving
off. Always make sure your passengers are
properly restrained, even those sitting in the
rear.
Failure to wear and properly fasten and po-
sition your seat belt greatly increases your
risk of injuries and their likely severity in an
accident. You and your passengers should
always wear seat belts.
If you are ever in an accident, your injuries
can be considerably more severe without
your seat belt properly buckled. Without
your seat belt buckled, you are much more
likely to hit the interior of the vehicle or be
ejected from it. You can be seriously injured
or killed.
In the same crash, the possibility of injury or
death is lessened if you are wearing your
seat belt. The air bags can only provide the
protection they where designed to afford if
the occupants are using their seat belts
(
page 64).
Warning!G
According to accident statistics, children
are safer when properly restrained in the
rear seating positions than in the front seat-
ing position. Thus, we strongly recommend
that children be placed in the rear seats.
Regardless of seating position, children
12 years old and under must be seated and
properly secured in an appropriate infant or
toddler restraint, or booster seat recom-
mended for the size and weight of the child.
For additional information, see “Children in
the vehicle” (
page 82).
A child’s risk of serious or fatal injuries is
significantly increased if the child restraints
are not properly secured in the vehicle
and/or the child is not properly secured in
the child restraint.

48 Getting started
Driving
The seat belt presenter for driver and pas-
senger makes it easier to put on the seat
belt.
1Seat belt presenterThe seat belt presenter1 slides out when
the corresponding door is closed and the
ignition is switched on (
page 36).
1Latch plate
2Release button
3Buckle
Warning!G
Never let more people ride in the vehicle
than there are seat belts available. Be sure
everyone riding in the vehicle is correctly
restrained with a separate seat belt. Never
use a seat belt for more than one person at
a time.
Warning!G
Never ride in a moving vehicle with the seat
backrest in an excessively reclined position
as this can be dangerous. You could slide
under the seat belt in a collision. If you slide
under it, the belt would apply force at the ab-
domen or neck. This could cause serious or
even fatal injuries. The seat backrest and
seat belt provide the best restraint when the
wearer is in a nearly upright position and the
belt is properly positioned on the body.
Warning!G
Read and observe the additional warning no-
tices printed in the “Safety and Security”
section (
page 67).

49 Getting started
Driving
With a smooth motion, pull the belt out
of the seat belt presenter.
Place the shoulder portion of the belt
across the top of your shoulder and the
lap portion across your hips.
Push latch plate1 into buckle3 until
it clicks.
If necessary, tighten the lap portion to
a snug fit by pulling shoulder portion
up.Proper use of seat belts

Do not twist the belt when fastening.

Adjust seat belt so that the shoulder
portion is located as close as possible
to the middle of the shoulder (it should
not touch the neck). Never pass the
shoulder portion of the belt under your
arm.

Position the lap belt as low as possible
on your hips (over hip joint) and not
across the abdomen.

Place the seat backrest in a nearly
upright position.

Never use a seat belt for more than one
person at a time.

Do not fasten a seat belt around a
person and another object at the same
time. When using a seat belt to secure
infant or toddler restraints or children
in booster seats, always follow the
child seat manufacturer's instructions.

Check your seat belt periodically
during travel to make sure that it is
properly positioned.

Make sure that the seat belt is always
fitted snugly. Take special care of this
when wearing loose clothing.
Warning!G
Do not pass belts over sharp edges. They
could tear.
Do not allow the belt to get caught in the
door or in the seat adjustment mechanism.
This could damage the belt.
Never attempt to make modifications to
seat belts. This could impair the effective-
ness of the belts.
Do not bleach or dye seat belts as this may
severely weaken them. In a crash they may
not be able to provide adequate protection.
Damaged seat belts or belts that were highly
stressed in an accident must be replaced.
Contact an authorized Mercedes-Benz
Center.

59 Getting started
Parking and locking
1Release handle
2Parking brake pedal
Step firmly on parking brake pedal2.
When the engine is running, the
warning lamp;(USA only)
or3(Canada only) in the clock will
be illuminated.
Switching off headlamps
Turn the exterior lamp switch toM
(
page 54).
For more information, see “Lighting”
(
page 126).
Warning!G
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. Children could release the
parking brake and/or move the gear selec-
tor lever from positionP, either of which
could result in an accident and/or serious
personal injury.
PositionP alone may not prevent your vehi-
cle from moving, possibly hitting people or
objects. Always set the parking brake in ad-
dition to shifting to positionP (
page 172).
When parked on an incline, always turn the
front wheels towards the road curb.
Getting out of your vehicle without taking
the above measurements to secure it is
dangerous.

63 Safety and Security
Occupant safety
Panic alarm
Driving safety systems
Anti-theft systems

64 Safety and Security
Occupant safety
In this section you will learn the most im-
portant facts about the restraint system
components of the vehicle.

Seat belts (page 75)

Child restraints (page 82)

Lower Anchors and Tethers for
CHildren (LATCH) (
page 85)
Additional protection potential provide

Supplemental Restraint System (SRS)
with

Air bags (page 65)

Air bag control unit (with crash
sensors)

Emergency tensioning device (ETD)
for seat belts (
page 79)

Active head restraint (page 80)

Roll bars (page 81)Air bag system components with

Front passenger front air bag off
indicator lamp (
page 74)

Front passenger seat with Occupant
Classification System (OCS)
(
page 71)
Although independent systems, their pro-
tective functions work in conjunction with
each other.
The SRS system conducts a self-test when
the ignition is switched on and in regular
intervals while the engine is running. This
facilitates detection of system malfunc-
tions. The 1indicator lamp in the in-
strument cluster comes on when the
ignition is switched on and goes out no lat-
er than a few seconds after the engine has
been started.The SRS components are in operational
readiness if the 1indicator lamp is not
lit when the engine is running.
A malfunction in the system has been
detected if the 1indicator lamp:
fails to go out after approximately
4 seconds after the engine was started

does not come on at all

comes on after the engine was started
or while driving
iFor information on infants and children
traveling with you in the vehicle and restraint
systems for infants and children, see “Children
in the vehicle” (
page 82).Warning!G
Modifications to or work improperly con-
ducted on restraint systems (such as seat
belts and anchors, emergency tensioning
devices, seat belt force limiters or air bags)
or their wiring, as well as tampering with in-
terconnected electronic systems, can lead
to the restraint systems no longer function-
ing as intended.

65 Safety and Security
Occupant safety
Air bagsAir bags or emergency tensioning devices,
for example, could deploy inadvertently or
fail to deploy in accidents although the de-
celeration threshold for air bag deployment
is exceeded. Therefore, never modify the re-
straint systems. Do not tamper with elec-
tronic components or their software.
Warning!G
In the event that the 1indicator lamp
comes on during driving or does not come
on at all, the SRS self-check has detected a
malfunction. For your safety, we strongly
recommend that you visit an authorized
Mercedes-Benz Center immediately to have
the system checked; otherwise the SRS may
not deploy when needed in an accident,
which could result in serious or fatal injury,
or it might deploy unexpectedly and unnec-
essarily which could also result in injury.
In addition, improper repair work on the SRS
creates a risk of rendering the SRS inopera-
tive or causing unintended air bag deploy-
ment. Work on the SRS must therefore only
be performed by qualified technicians. Con-
tact an authorized Mercedes-Benz Center.
If it is necessary to modify an air bag system
to accommodate a person with disabilities,
contact your local authorized
Mercedes-Benz Center or call our Customer
Assistance Center at 1-800-FOR-MERCedes
(1-800-367-6372) for details.
Warning!G
Air bags are designed to reduce the poten-
tial of injury and fatality in certain frontal im-
pacts (front air bags) or side impacts
(head-thorax air bags and rear side impact
air bags*). However, no system available to-
day can totally eliminate injuries and
fatalities.
The deployment of the air bags temporarily
releases a small amount of dust from the air
bags. This dust, however, is neither injurious
to your health, nor does it indicate a fire in
the vehicle. The dust might cause some tem-
porary breathing difficulty for people with
asthma or other breathing trouble. To avoid
this, you may wish to get out of the vehicle
as soon as it is safe to do so. If you have any
breathing difficulty but cannot get out of the
vehicle after the air bag inflates, then get
fresh air by opening a window or door.