2007 MERCEDES-BENZ C-CLASS SALOON change key battery

4 B
Bag hoo k. . . . . . . . . . . . . . . . . . . . . . .185
Ball couplin g
Folding in . . . . . . . . . . . . . . . . . . . .223
Folding out . . . . . . . . . . . . . . . . . . .220
BAS . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
Battery Changing (key) . . . . . . . . . . . . . . . .304
Changing (KEYLESS GO key) . . . . .304
Charging . . . . . . . . . . . . . . . . . . . . .327
Checking (key ).. . . . . . . . . . . . . . .304
Checking (KEYLESS GO key) . . . . .304
Check lamp (key ).. . . . . . . . . . . . .304
Check lamp (KEYLESS GO key) . . . . . . . . . . . . . . . . . . . . . . . . .79, 304
Disconnecting . . . . . . . . . . . . . . . .326
Display message . . . . . . . . . .249, 268
Maintenance (vehicle ).. . . . . . . ..324
Reconnecting . . . . . . . . . . . . . . . . .328
Removing/fitting . . . . . . . . . . . . . .327
Vehicle battery . . . . . . . . . . . . . . . .324
Belt force limiters
Activatio n.. . . . . . . . . . . . . . . . . . . .47
Belt height adjustment . . . . . . . . . ..100
Belt tensioners Activatio n.. . . . . . . . . . . . . . . . . . . .47
Belt warnin g. . . . . . . . . . . . . . . . . . . .100 Bonnet
Bonnet catch . . . . . . . . . . . . . . . . .207
Display message . . . . . . . . . . . . . .247
Opening/closing . . . . . . . . . . . . . .206
Bonnet release lever
Release lever . . . . . . . . . . . . . . . . .207
Boot
Emergency release . . . . . . . . . . . . .301
Locking separatel y.. . . . . . . . . . . . .82
Opening/closing . . . . . . . . . . . . . . .80
Boot li d
Display message . . . . . . . . . . . . . .247
Brake
Warning lamp . . . . . . . . . . . . . . . . .280
Brake Assist
see BAS
Brake fluid . . . . . . . . . . . . . . . . . . . . .370
Display message (luxury multi-
function steering wheel) . . . . . . . .250
Display message (multi-function
steering wheel) . . . . . . . . . . . . . . .242
Brake lamps
Adaptive . . . . . . . . . . . . . . . . . . . . . .68
Display message . . . . . . . . . . . . . .258
Brake syste m
Display message . . . . . . . . . . . . . .250
Parking brake . . . . . . . . . . . . . . . . .116
Bulb
Brake lamp . . . . . . . . . . . . . . .310, 311
Dipped-beam headlamps . . . . . . . .308 Main-beam headlamps . . . . . . . . .
.309
Parking lamp . . . . . . . . . . . . . . . . .309
Rear foglamp . . . . . . . . . . . . .310, 311
Replacing . . . . . . . . . . . . . . . .307, 310
Reversing lamp . . . . . . . . . . .310, 311
Side lamp . . . . . . . . . . . . . . . . . . . .309
Side marker lamp . . . . . . . . . . . . . . . . . . . . . . .310, 311
Tail lamp . . . . . . . . . . . . . . . .310, 311
Turn signal lamp . . . . . .309, 310, 311
see Lamp
Bulbs
Overview . . . . . . . . . . . . . . . . . . . .306 C
Car e. . . . . . . . . . . . . . . . . . . . . . . . . . .227
Automatic car wash . . . . . . . . . . . .227
Headlamps . . . . . . . . . . . . . . . . . . .228
High-pressure cleaners . . . . . . . . .228
Parktroni c.. . . . . . . . . . . . . . . . . .230
Plastic trim . . . . . . . . . . . . . . . . . . .229
Rear window . . . . . . . . . . . . . . . . .228
Side windows . . . . . . . . . . . . . . . . .228
Trailer tow hitch . . . . . . . . . . . . . . .230
CD player/CD changer
Operation (on-board computer,
luxury multi-function steering
wheel) . . . . . . . . . . . . . . . . . . . . . .137 Index
204_AKB; 2; 3, en-GB
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4

Opening and closing
76 Opening and closing
Key
The vehicle's equipment includes two keys
with remote control. Each key contains an
emergency key element .
The key is configured at the factory to cen-
trally lock and unlock the following:
R The doors
R The boot lid/tailgate
R The fuel filler flap G
Risk of accident
Never leave children unsupervised in the
vehicle. They could open even a locked
door from the inside or start the vehicle if
the key is left in it and thereby endanger
themselves and others. You should there -
fore take the key with you when leaving the
vehicle, even if you are only leaving it for a
short time. 1
j Locking button
2 i Unlocking button for the boot lid/
tailgate*
3 k Unlocking button
4 Battery check lamp
i You can also open and close the side win-
dows and the sliding/tilting sunroof* or the
panorama sliding sunroof* with the key
( Y page 111).
Factory settings X
To unlock centrally :press the kbut-
ton .
The turn signals flash once. The lockin g
knobs in the doors pop up. The anti-theft
alarm system* is deactivated .When it is dark, the surround lighting also
comes on if it is activated in the on-board
computer.
i If you do not open either a door or the
boot lid/tailgate after you have unlocked
the vehicle, it will relock automatically after
approximately 40 seconds.
X To lock centrally :press the jbutton.
The turn signals flash three times if the
doors and boot lid/tailgate are closed. The
locking knobs in the doors drop down. The
anti-theft alarm system* and the immobil-
iser are primed.
Individual settings You can change the setting of the locking
system in such a way that pressing the
k button only unlocks the driver's door
and the fuel filler flap. This is useful if you fre-
quently travel on your own.
X To change the setting: press and hold down
the k andj buttons simultaneously
for approximately six seconds until battery
check lamp flashes twice. Controls
* optional
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Opening and closing
77
The key now functions as follows:
X
To unlock the driver's door: press the
k button once.
X To unlock centrally :press the kbut-
ton twice.
X To lock centrally :press the jbutton.
Restoring the factory settings X
Press the kandj buttons simulta-
neously for approximately six seconds until
the battery check lamp flashes twice. KEYLESS GO key*
If you are carrying the KEYLESS GO key on
your person, you can use the KEYLESS GO
functions of your vehicle. The KEYLESS GO
key should not be more than one metre away
from the vehicle. However, you can also use
the KEYLESS GO key like a normal key with
remote control.
When you pull the door handle, the following
unlock centrally if the factory settings have
not been changed: R
The doors
R The boot lid/tailgate
R The fuel filler flap
If you press the button in the handle of the
boot lid/tailgate, only the boot/luggage com-
partment of your vehicle is unlocked. G
Risk of accident
Never leave children unsupervised in the
vehicle. They could :
R Open a door from the inside at any time,
even if it has been locked
R Start the vehicle if a valid KEYLESS GO
key is in the vehicle and they press the
KEYLESS GO button on the ignition lock
R Release the electric parking brak e
They could endanger themselves and oth-
ers. Switch off the engine and take the
KEYLESS GO key with you, even if you are
only leaving the vehicle for a short time. 1
j Locking button
2 i Unlocking button for the boot lid/
tailgate*
3 k Unlocking button
4 Battery check lamp
i You can also use the KEYLESS GO key to
open and close the side windows and the
sliding/tilting sunroof* or the panorama
sliding sunroof* (Y page 111).
i If the vehicle has been parked for a long
time, the sensor surfaces are deactivated
automatically. Pull on the door handle to
unlock the door and switch on the ignition
once to reactivate the sensors. Controls
* optional
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Opening and closing
78
Important notes R
If the KEYLESS GO key is removed from the
vehicle (in luggage or an article of clothing,
for instance), it will no longer be possible
to lock or start the vehicle .
R If the KEYLESS GO key is removed from the
vehicle while the engine is running, e.g. if
the front passenger leaves the vehicle with
the KEYLESS GO key, the following mes-
sage will appear in the multi-function dis-
play as you pull away: Key not detec-
ted.
R If the KEYLESS GO key is in the vehicle, the
vehicle can be started at any time. If you
have left the KEYLESS GO key in the vehi-
cle, you will see the following message in
the multi-function display when you lock
the vehicle: Key still in vehicle.
Factory settings X
To unlock centrally :pull the door handle.
The turn signals flash once. The locking
knobs in the doors pop up. The anti-thef t
alarm system* is deactivated.
When it is dark, the surround lighting also
comes on if it is activated in the on-board
computer. i
If you do not open either a door or the
boot lid/tailgate after you have unlocked
the vehicle, it will relock automatically after
approximately 40 seconds.
i It is possible that the vehicle may be inad-
vertently unlocked if the KEYLESS GO key
is within a maximum of one metre of the
vehicle and the door handle is splashed by
a gush of water or if you are cleaning the
door handle . 1
Sensor surface on the door handl e
X To lock centrally: touch sensor surface
1 on the door handle.
The turn signals flash three times. The lock-
ing knobs in the doors drop down. The anti- theft alarm system* and the immobiliser
are primed.
Individual settings You can change the setting of the lockin
g
system. When you now grasp the door handle
on the driver's door, you will only unlock the
driver's door and the fuel filler flap. This is
useful if you frequently travel on your own.
X To change the settings :press and hold
the k andj buttons of the key
simultaneously for approximately six sec-
onds until the battery check lamp flashes
twice.
The KEYLESS GO key will now function as fol-
lows:
X To unlock the driver's door: Pull the door
handle on the driver's door.
X To unlock centrally :Pull the door handle
on the front-passenger door or on the rear
doors.
X To lock centrally: touch sensor surface
1 on the door handle. Controls
* optional
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Sliding sunroof
173Rear window heating
G
Risk of accident
Clear all windows of ice or snow before set-
ting off. Impaired visibility could otherwise
endanger yourself and others.
i The rear window heating has a high cur-
rent draw. Therefore, switch it off as soon
as the rear window is free of snow and ice,
as it only switches itself off automatically
after between fifteen and thirty minutes.
i If the battery voltage is too low, the rear
window heating may switch off.
X Make sure that the key is in position 2in
the ignition lock .
X To switch on/off :press the ¯button.
The indicator lamp in the ¯switch is lit
or off. Sliding sunroof
Sliding/tilting sunroof*
G
Risk of injury
Never leave children unsupervised in the
vehicle. They could operate the sliding/tilt-
ing sunroof and injure themselves. Alway s
take the key with you when leaving the
vehicle, even if you only leave it for a short
time. G
Risk of injury
Make sure that nobody can become trap -
ped when you are opening and closing the
sliding/tilting sunroof. If danger threatens,
release the switch and push it briefly in any
direction to stop the sliding/tilting sunroof . G
Risk of injury
The glass in the sliding/tilting sunroof
could break in an accident. If you are not
wearing a seat belt, there is a risk that yo u
could be thrown through the opening in the
event of the vehicle overturning. Therefore,
always wear a seat belt to reduce the ris k
of injuries. !
Only open the sliding/tilting sunroof if it
is free of snow and ice. Otherwise, mal-
functions may occur.
Do not allow anything to protrude from the
sliding/tilting sunroof. The seals could oth-
erwise be damaged.
i Resonance noises can occur in addition
to the usual airflow noises when the slid -
ing/tilting sunroof is open. They are caused
by minor pressure fluctuations in the vehi-
cle interior .
Change the position of the sliding/tilting
sunroof or open a side window slightly to
reduce or eliminate these noises .
i It is also possible to open and close the
sliding/tilting sunroof from the outsid e
using the "Summer opening" (Y page 111 )
and "Convenience closing" (Y page 112 )
features respectively .
i If PRE-SAFE ®
has been activated, the slid-
ing/tilting sunroof closes automatically ,
leaving a small gap open . Cont
rols
* optional
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Troubleshooting
29
6 Key
Problem Possible cause/consequence Suggested solutions
You cannot lock or unlock th
e
vehicle using the key. The key batteries are discharged
or nearly discharged. X
Point the tip of the key at the driver's door handle from close range
and try to open the vehicle again.
If this does not work:
X Lock or unlock the vehicle using the emergency key element
(Y page 300).
X Check the key batteries (Y page 304) and replace them if neces-
sary (Y page 304). The key is faulty. X
Lock or unlock the vehicle using the emergency key element
(Y page 300).
X Have the key checked at a qualified specialist workshop .The battery charge indicator lamp
of the key does not go on during
the test. The key batteries are discharged. X
Change the batteries (Y page 304). You have lost a key. X
Have the key cancelled at a Mercedes-Benz Service Centre.
X Report the loss immediately to the vehicle insurers .
X If necessary, have the manual locks changed too. You have lost the emergency key
element. X
Report the loss immediately to the vehicle insurers .
X If necessary, have the manual locks changed too. Practical advice
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Troubleshooting
29
8 KEYLESS GO*
Problem Possible cause/consequence Suggested solutions
You cannot lock or unlock th
e
vehicle using the KEYLESS GO
key. The KEYLESS GO key batterie
s
are discharged or nearly dis-
charged. X
Lock or unlock the vehicle using the remote control function of the
key. Point the tip of the key at the driver's door handle from close
range and try to open the vehicle again.
If this does not work:
X Lock or unlock the vehicle using the emergency key element
(Y page 300).
X Check the KEYLESS GO key batteries (Y page 304) and replace
them if necessary (Y page 304). There is a fault with KEYLESS GO. X
Lock or unlock the vehicle using the remote control function of the
key. To do this, point the tip of the key at the driver's door handle
from close range and try to open the vehicle again.
X Have the KEYLESS GO key checked at a qualified specialist work-
shop . There is interference from a pow-
erful source of radio waves. X
Lock or unlock the vehicle using the emergency key element
(Y page 300). The battery check lamp in the
KEYLESS GO key does not light
up when tested. The KEYLESS GO key batteries
are discharged. X
Change the batteries (Y page 304). Practical advice
* optional
204_AKB; 2; 3, en-GB
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Troubleshooting
29
9 Problem Possible cause/consequence Suggested solutions
The vehicle cannot be started
using the KEYLESS GO key and
the KEYLESS GO button. The KEY-
LESS GO key is in the vehicle. A door is open. The key therefore
cannot be detected so easily. X
Close the door and try to start the vehicle again . You did not depress the brak
e
when starting the engine. X
Depress the brake pedal and press the KEYLESS GO button. There is interference from a pow-
erful source of radio waves
. X
Start your vehicle using the KEYLESS GO key in the ignition lock. You have lost the KEYLESS GO
key
. X
Have the KEYLESS GO key cancelled at a Mercedes-Benz Service
Centre.
X Report the loss immediately to the vehicle insurers .
X If necessary, have the manual locks changed too. Parking up the vehicle
Proble
m Possible cause/consequence Suggested solutions
The vehicle is to be left parked up
for longer than six weeks. X
Visit a qualified specialist workshop and seek advice.
X Disconnect the battery (Y page 326). Practical advice
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