2005 MERCEDES-BENZ C CLASS COUPE brake

395
Practical hints
Flat tire
Lifting the vehicle
Prevent the vehicle from rolling away
by blocking wheels with wheel chocks
or other sizable objects.
One wheel chock is included with
vehicle tool kit (
page 373).
When changing wheel on a level surface:

Place the wheel chock (located in the
vehicle tool kit) in front of and another
sizable object behind the wheel that is
diagonally opposite to the wheel being
changed.
When changing wheel on a hill:

Place the wheel chock and other size-
able object on the downhill side block-
ing both wheels of the other axle.

Take the two-piece wheel wrench and
the jack out of the vehicle tool kit
(page 373). Assemble wheel wrench.

On wheel to be changed, loosen but do
not yet remove the wheel bolts
(approximately one full turn with
wrench).
Warning!
G
The jack is designed exclusively for jacking
up the vehicle at the jack take-up brackets
built into both sides of the vehicle. To help
avoid personal injury, use the jack only to lift
the vehicle during a wheel change. Never
get beneath the vehicle while it is supported
by the jack. Keep hands and feet away from
the area under the lifted vehicle. Always
firmly set parking brake and block wheels
before raising vehicle with jack.
Do not disengage parking brake while the
vehicle is raised. Be certain that the jack is
always vertical (plumb line) when in use, es-
pecially on hills. Always try to use the jack
on level surface. Make sure the jack arm is
fully seated in the jack take-up bracket.
Always lower the vehicle onto sufficient
capacity jackstands before working under
the vehicle.

405
Practical hints
Jump starting
The battery is located in the engine com-
partment on the right hand side. The
terminals for jump starting are located in
front of the battery.
Make sure the two vehicles do not
touch.

Turn off the engine.
On both vehicles:

Turn off all electrical consumers.

Apply parking brake.

Shift gear selector lever to position P
(manual transmission to Neutral). 1
Positive terminal of charged battery
2 Positive under hood terminal in front of
discharged battery
3 Negative terminal of charged battery
4 Negative under hood terminal in front
of discharged battery

Connect positive terminal 1 of the
charged battery with positive under
hood terminal 2 in front of the dis-
charged battery with the jumper ca-
bles. Clamp cable to charged
battery 1 first.

Start engine of the vehicle with the
charged battery and run at idle speed.

Connect negative terminal 3 of the
charged battery with negative under
hood terminal 4 in front of the dis-
charged battery with the jumper
cables. Clamp cable to charged
battery 3 first.

Start the engine of the disabled
vehicle.
Now you can turn on the electrical con-
sumers. Do not turn on the lights under
any circumstances.

Remove the jumper cables first from
negative terminals 4 and 3 and then
from positive terminals 2 and 1.
You can now turn on the lights.

Have the battery checked at the
nearest authorized Mercedes-Benz
Center.
Warning!
G
Keep flames or sparks away from battery.
Do not smoke.
Observe all safety instructions and precau-
tions when handling automotive batteries
(page 297).
!Vehicles with automatic transmission:
Do not tow-start the vehicle.

406 Practical hintsTowing the vehicleMercedes-Benz recommends that the vehi-
cle be transported with all wheels off the
ground using flatbed or appropriate wheel
lift/dolly equipment. This method is pref-
erable to other types of towing.When circumstances do not permit the
recommended towing methods, the vehi-
cle may be towed with all wheels on the
ground or front wheels raised only so far as
necessary to have the vehicle moved to a
safe location where the recommended
towing methods can be employed.
!Use flatbed or wheel lift/dolly equip-
ment with SmartKey in starter switch
turned to position
0.
Do not tow with sling-type equipment.
Towing with sling-type equipment over
bumpy roads will damage radiator and
supports.
To prevent damage during transport,
do not tie down vehicle by its chassis or
suspension parts.
Switch off the tow-away alarm
(page 87) and deactivate the auto-
matic central locking (
page 148).
!Vehicles with automatic transmission:
Do not tow-start the vehicle.
!If the vehicle is towed with the front
axle raised, the engine must be shut off
(SmartKey in starter switch position 0
or 1). Otherwise, the ESP will immedi-
ately be engaged and will apply the rear
wheel brakes.
When towing the vehicle with all wheels
on the ground, the gear selector lever
must be in position N (manual trans-
mission: gears disengaged) and the
SmartKey must be in starter switch
position 2.
When towing the vehicle with all wheels
on the ground or the front axle raised,
the vehicle may be towed only for dis-
tances up to 30 miles (50 km) and at a
speed not to exceed 30 mph
(50 km/h).

408 Practical hintsTowing the vehicleWarning!
G
With the engine not running, there is no
power assistance for the brake and steering
systems. In this case, it is important to keep
in mind that a considerably higher degree of
effort is necessary to brake and steer the ve-
hicle. Adapt your driving accordingly.
!When towing the vehicle with all wheels
on the ground, please note the follow-
ing:
With the automatic central locking acti-
vated and the SmartKey in starter
switch position2, the vehicle doors
lock if the left front wheel as well as the
right rear wheel are turning at vehicle
speeds of approximately 9 mph
(15 km/h) or more.
Switch off the tow-away alarm
(page 87).
To prevent the vehicle doors from lock-
ing, deactivate the automatic central
locking (
page 148).
Towing of the vehicle should only be
done using the properly installed tow-
ing eye bolt. Never attach tow cable,
tow rope or tow rod to vehicle chassis,
frame or suspension parts.
iIf the battery is disconnected or dis-
charged

the SmartKey will not turn in the
starter switch. For more informa-
tion, see “Battery” (
page 401)
and “Jump starting” (page 404).


the gear selector lever will remain
locked in position P. For informa-
tion on manually unlocking trans-
mission gear selector lever, see
(page 380).

428 Technical dataFuels, coolants, lubricants, etc.Engine oils
Engine oils are specifically tested for their
suitability in our engines and durability for
our service intervals. Therefore, only use
approved engine oils and oil filters re-
quired for vehicles with Maintenance
System (U.S. vehicles) or FSS (Canada
vehicles). For a listing of approved engine
oils and oil filters, refer to the Factory
Approved Service Products pamphlet, or
contact an authorized Mercedes-Benz
Center.
Using engine oils and oil filters of specifica-
tion other than those expressly required
for the Maintenance System (U.S.
vehicles) or FSS (Canada vehicles), or
changing of oil and oil filter at change inter-
vals longer than those called for by the
Maintenance System (U.S. vehicles) or
FSS (Canada vehicles) will result in engine
damage not covered by the
Mercedes-Benz Limited WarrantyPlease follow Maintenance System (U.S.
vehicles) or FSS (Canada vehicles) recom-
mendations for scheduled oil changes.
Failure to do so will result in engine dam-
age not covered by the Mercedes-Benz
Limited Warranty.
Engine oil additives
Do not blend oil additives with engine oil.
They may damage the engine.
Damage or malfunctions resulting from
blending oil additives are not covered by
the Mercedes-Benz Limited Warranty.Air conditioning refrigerant
R-134a (HFC) refrigerant and special PAG
lubricating oil is used in the air condition-
ing system.
Never use R-12 (CFC) or mineral-based
lubricating oil. Otherwise damage to the
system will occur.
Brake fluid
During vehicle operation, the boiling point
of the brake fluid is continuously reduced
through the absorption of moisture from
the atmosphere. Under extremely strenu-
ous operating conditions, this moisture
content can lead to the formation of bub-
bles in the system, thus reducing the sys-
tem’s efficiency.
Therefore, the brake fluid must be re-
placed every two years, preferably in the
spring.
Only brake fluid approved by
Mercedes-Benz is recommended. An
authorized Mercedes-Benz Center will
provide you with additional information.

437
Technical terms
ABS
(A
ntilock B
rake S
ystem)
Prevents the wheels from locking up
during braking so that the vehicle can
continue to be steered.
Accessory weight (
page 323)
Air pressure (page 323)
Alignment bolt Metal pin with thread. The centering
pin is an aid used when changing a tire
to align the wheel with the wheel hub.
Aspect ratio (page 323)
Bar (page 323)
BAS (Brake A
ssist S
ystem)
System for potentially reducing braking
distances in emergency braking situa-
tions. The system is activated when it
senses an emergency based on how
fast the brake is applied. Bead
(
page 323)
Bi-Xenon headlamps* Headlamps which use an electric arc as
the light source and produce a more in-
tense light than filament headlamps.
Bi-Xenon headlamps produce low
beam and high beam.
CAC (Customer A
ssistance C
enter)
Mercedes-Benz customer service cen-
ter, which can help you with any ques-
tions about your vehicle and provide
assistance in the event of a break-
down.
CAN system (C
ontroller A
rea N
etwork)
Data bus network serving to control ve-
hicle functions such as door locking or
windshield wiping. Cockpit
All instruments, switches, buttons and
indicator/warning lamps in the passen-
ger compartment needed for vehicle
operation and monitoring.
Cold tire inflation pressure (
page 323)
Collapsible tire An especially compact spare tire that
must be inflated with a provided air
pump before using. It should only be
used to bring the vehicle to the nearest
service station.
COMAND* (Cockpit M
anagement and D
ata Sys-
tem)
Information and operating center for
vehicle sound and communications
systems, including the radio and navi-
gation system, as well as other optional
equipment (CD changer, telephone,
etc.).

441
Technical terms
Shift lock
When the vehicle is parked, this lock
prevents the gear selector lever from
being moved out of position P without
SmartKey turned and brake pedal de-
pressed.
Sidewall (
page 325)
SRS (Supplemental R
estraint S
ystem)
Air bags, air bag control unit (with
crash sensor), emergency tensioning
device. Though independent systems,
they are closely interfaced to provide
effective occupant protection. Tele Aid* System
(T
elematic A
larm I
dentification on D
e-
mand)
The Tele Aid system consists of three
types of response: automatic and man-
ual emergency, roadside assistance
and information. Tele Aid is initially
activated by completing a subscriber
agreement and placing an acquain-
tance call.
The Tele Aid system is operational pro-
vided that the vehicle’s battery is
charged, properly connected, not dam-
aged and cellular and GPS coverage is
available.
Tightening torque Force times lever arm (e.g. a lug
wrench) with which threaded fasteners
such as wheel bolts are tightened.
TIN (T
ire I
dentification N
umber)
(
page 325)
Tire load rating (page 325) Tire ply composition and material used
(
page 325)
Tire speed rating (page 325)
Traction (page 325)
Tread (page 325)
Treadwear indicators (page 325)
Uniform Tire Quality Grading Standards (page 326)
Vehicle capacity weight (page 326)
Vehicle maximum load on the tire (page 326)
VIN (Vehicle I
dentification N
umber)
The number set by the manufacturer
and placed on the body to uniquely
identify each vehicle produced.

444 IndexAdjusting sound functions 199
Adjusting the volume 199
Air bags 61Children 62
Front 65
Front passenger front air bag off indica-tor lamp 27, 76, 345
Passenger 65
Safety guidelines 64
Side impact 66
Window curtain 66
Air conditioner refrigerant 428
Air conditioning (cooling) Turning off 192 Climate control 179
Turning on 192 Climate control 179
Air distribution Adjusting 186 Climate control 176
Air pressure 323
Air pressure see Tire inflation pressure
Air pump, electric Turning on 399 Air recirculation mode 189
Activating 189Climate control 177
Deactivating 190 Climate control 178
Air vents, rear passenger compartment Adjustable 194Climate control 180
Air volume Adjusting 187Climate control 176
Alarm Audible 80, 87, 88
Canceling 87, 88
Visual 86
Alarm system Anti-theft 86
Alignment bolt 396
Alignment bolt (vehicle tool kit) 437
Anticorrosion/antifreeze 433
Antiglare Automatic* 168
Manual 167
Antilock brake system (ABS) 437 Anti-theft alarm system
Arming 86
Canceling alarm 87, 88
Disarming 87
Anti-theft systems 86 Anti-theft alarm system 86
Immobilizer 86
Tow-away alarm 87
Aquaplaning 281
Armrest Storage spaces 255
Ashtrays Center console 257
Rear seat 258
Aspect ratio 323
ATF (automatic transmission fluid) 296
AUDIO menu 129 Selecting radio station 130
Selecting satellite radio* station 130