brake pads MERCEDES-BENZ E320 2005 W211 Owner's Manual

92 Safety and SecurityDriving safety systems
The SBC brake servo assistance switches
off automatically

approximately two minutes after you
turned the SmartKey in the starter
switch to position0 or removed the
SmartKey


approximately two minutes after you
pressed the KEYLESS-GO* start/stop
button to turn off the engine or power
supply and opened the driver’s door
(with driver’s door open, the starter
switch is set to position 0, same as
SmartKey removed from starter
switch)


approximately 20 seconds after you
locked the vehicle from outside
Note on driving with the SBC


Following extended periods of only mi-
nor loads to your brake system, you
should occasionally apply the brakes
when traveling at high speeds. This im-
proves the grip of the brake pads.


After driving on wet or snow-covered
roads, you should apply your brakes
firmly before parking your vehicle. This
produces heat which serves to dry the
brake disks and help prevent corro-
sion.


On long and steep grades, shift to a
lower gear (gear range1, 2, or 3) to
prevent the brakes from overheating
and to reduce brake wear.


After hard braking, it is advisable to
drive on for some time so that the air
stream will cool down the brakes fast-
er.


Only Mercedes-Benz approved compo-
nents (e.g. brake pads) should be in-
stalled on your vehicle. Brake pads not
approved by Mercedes-Benz may im-
pair the safety of your vehicle.
Warning!
G
Have brake pad replacement and other work
on the SBC brake system carried out by
qualified technicians only. Contact an au-
thorized Mercedes-Benz Center for further
information. The SBC brake system must be
deactivated prior to working on the system.
High pressure is intermittently built up in the
system as part of its automatic self-test. In
addition, the system is automatically acti-
vated when the vehicle is unlocked by
SmartKey, when the driver or passenger
door is opened, when the starter switch is
turned to position
1, when the brake pedal
is depressed or when the parking brake is
released. Failure to deactivate the system
prior to maintenance will cause brake pis-
tons to extend and brake fluid to leak, which
may result in injuries (contusions and acid
burns). Extended brake pistons may also
cause injury.
Warning!
G
Be very careful not to endanger other road
users when you apply the brakes.

288 OperationDriving instructionsPower assistance
Brakes
Warning!
G
The brake system requires electrical energy
for operation.
A malfunction in the vehicle’s power supply
or electrical system may impair brake sys-
tem operation and switch it into its emer-
gency operation mode. In such a case, the
red brake warning lamp (
page 358) and
warning messages in the instrument cluster
(
page 367) come on while driving. To
brake, the driver must then apply signifi-
cantly greater brake pedal pressure and de-
press the pedal much further to obtain the
expected braking effect. If necessary, apply
full pressure to the brake pedal. Brakes may
only be applied to the front wheels. Stop-
ping distance is increased!
If there is a malfunction in the SBC brake
system, we recommend that the vehicle be
transported with all wheels off the ground
using flatbed or appropriate wheel lift/dolly
equipment. A tow bar must be used if cir-
cumstances do not permit the use of the
recommended towing methods and the ve-
hicle requires towing with all four wheels on
the ground. Towing the vehicle with all four
wheels on the ground is only permissible for
distances up to 30 miles (50 km) and at a
speed not to exceed 30 mph (50 km/h). For
more information, refer to “Towing the vehi-
cle” (
page 439). For more information,
see “SBC brake system” (
page 90).
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.
Warning!
G
After driving in heavy rain for some time
without applying the brakes or through wa-
ter deep enough to wet brake components,
the first braking action may be somewhat
reduced and increased pedal pressure may
be necessary to obtain expected braking ef-
fect. Maintain a safe distance from vehicles
in front.
Resting your foot on the brake pedal will
cause excessive and premature wear of the
brake pads.
It can also result in the brakes overheating,
thereby significantly reducing their effec-
tiveness. It may not be possible to stop the
vehicle in sufficient time to avoid an acci-
dent.

289 Operation
Driving instructions
To help prevent brake disk corrosion after
driving on wet road surfaces (particularly
salted roads), it is advisable to brake the
vehicle with considerable force prior to
parking. The heat generated serves to dry
the brakes.
If your brake system is normally only sub-
jected to moderate loads, you should occa-
sionally test the effectiveness of the
brakes by applying above-normal braking
pressure at higher speeds. This will also
enhance the grip of the brake pads. If the parking brake is released and the
brake warning lamp in the instrument clus-
ter stays on, there is a malfunction in the
SBC brake system (
page 90) or the
brake fluid level in the reservoir is too low.
Brake pad wear or a leak in the system may
be the reason for low brake fluid in the res-
ervoir.
Have the brake system inspected by quali-
fied technicians immediately. Contact an
authorized Mercedes-Benz Center.
All checks and service work on the brake
system should be carried out by qualified
technicians only. Contact an authorized
Mercedes-Benz Center.
Only install brake pads and brake fluid rec-
ommended by Mercedes-Benz.
After hard braking, it is advisable to drive
on for some time, rather than immediately
parking, so that the air stream will cool
down the brakes faster.
!Be very careful not to endanger other
road users when you apply the brakes.
Refer to the description of the Brake
Assist System (BAS) (
page 87).
Warning!
G
If other than recommended brake pads are
installed, or other than recommended brake
fluid is used, the braking properties of the
vehicle can be degraded to an extent that
safe braking is substantially impaired. This
could result in an accident.
Be certain to read and observe the warning
notices on brake pad replacement
(page 380).!When driving down long and steep
grades, relieve the load on the brakes
by shifting into a lower gear to use the
engine’s braking power. This helps pre-
vent overheating of the brakes and re-
duces brake pad wear.

343 Operation
Maintenance
Maintenance
We strongly recommend that you have
your vehicle serviced by an authorized
Mercedes-Benz Center, in accordance with
the Maintenance Booklet at the times
called for by the maintenance service indi-
cator display.
Failure to have the vehicle maintained in
accordance with the Maintenance Booklet
and maintenance service indicator at the
designated times /mileage will result in ve-
hicle damage not covered by the
Mercedes-Benz Limited Warranty.
The maintenance service indicator will no-
tify you when your next maintenance ser-
vice is due.
Starting approximately one month before
maintenance service is due, one of the fol-
lowing messages will appear in the multi-
function display while you are driving or
when you switch on the ignition (example
service A):
Service A in XXXX miles (km)
Service A in XX days
Service A in X day
Service A due now!The maintenance services will be indicated
by showing a service type A through type H
in the multifunction display. Types A
through H are classified based on estimat-
ed time needed to perform the mainte-
nance service, ranging:
from
Service A(approx. one hour)
toService H(approx. eight hours)When the service type appears, you can
use the vehicle’s control system to view a
list of the service items (1-14) that need to
be performed at the called for service type
(
page 347).iThe additional + after the type of ser-
vice indicates the degree of wear of the
brake pads.
The brake pads may reach their wear
limit in the time period up to the next
service interval.
Have the brake pads checked and, if
necessary, replaced by an authorized
Mercedes-Benz Center during your
next service appointment.

380 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause
Possible solution
2
Brake wear
Visit workshop
The brake pads have reached their wear
limit.

Brake pad thickness must be visually
inspected at the intervals specified in
the Maintenance Booklet.

Have the brake pads replaced as soon
as possible.
T
Reduced braking power
Depress brake
pedal fully
The SBC brake system is in emergency
operation mode. Considerably greater
brake pedal force is required and the
stopping distance is increased.
The maximum speed is limited to 55 mph
(90 km / h).

Do not drive any further.

Stop the vehicle and notify an autho-
rized Mercedes-Benz Center.

Prevent the vehicle from rolling away
by blocking the wheels with wheel
chocks or other sizable objects.

Call for Roadside Assistance.
(USA only);(Canada only)3
Reduced braking power
Start engine
The battery has insufficient voltage and
cannot supply sufficient power to the
SBC brake system.

Start the engine.
The message disappears when suffi-
cient voltage is available.

480 IndexBattery discharged
Jump starting 436
Bead 337
Bi-Xenon headlamps* 471
Bleeding the fuel system 432
Block heater* 342
Blocking
Rear window operation 83
Brake assist system (BAS) 471
Brake fluid 301, 382
Brake pads
Message in display 380
Brakes
Warning lamp 358
Break-in period 286Bulbs, replacing
Additional turn signals 417
Fog lamps 417
Front lamps 417, 420
High beam 418
High mounted brake lamp 418
License plate lamps 418, 422
Low beam 418
Parking lamps 418
Side marker lamps 417, 422
Standing lamps 418
Tail lamp 418
Tail lamp assemblies 422
Turn signal lamp 417
C
CAC (Customer Assistance Center) 471
Calling up
Distronic* settings 152
Maintenance service indicator 345
Range (distance to empty) 171
CAN system 471
Cargo tie-down rings 261
CD player
Operating 151Center console
Lower part 28
PASS AIR BAG OFF indicator
lamp 365
Upper part 27
Centigrade
Setting temperature units 157
Central locking
From inside 119
Switch 119
Switching on/off (control
system) 166
Unlocking from inside 119
Central locking switch 119
Changing
Batteries (SmartKey with
KEYLESS-GO*) 415, 416
Batteries (SmartKey) 415, 416
SmartKey setting 167
Vehicle level 249
Charging
Vehicle batteries 435
CHECK ENGINE malfunction indicator
lamp 359, 360

491 Index
Multifunction display messages
ABS 369
Batteries 370, 378, 379
Brake fluid 382
Brake pads 380
Check engine 359, 360
Coolant 384, 385
Coolant level 383
Distronic* 370
Doors 386
Easy-entry/exit feature 381
Fuel reserve tank 389
Hood 389
Lamps 394
Parking brake 381
SBC brake system 380, 381
SmartKey 390
SmartKey with KEYLESS-GO* 391
Tele Aid 403, 404
Telephone* 405
Tires 399
Trunk 405
Washer fluid 405
Multifunction steering wheel 26, 146,
474
Buttons 146N
Navigation system
See separate COMAND operating
instructions 152
Night security illumination 136
Normal occupant weight 338
O
Occupant Classification System 74
Self-test 79
Occupant distribution 338
Occupant safety 60
Airbags 61
Children and airbags 62
Children in the vehicle 71
Fastening the seat belt 43
Infant and child restraint systems 71
LATCH child seat anchors 81
Seat belts 43, 64
Oil
Adding 306
Checking level 305
Consumption 304
Filler neck 306
Viscosity 472Oil level
Checking 305
One-touch gearshifting 176
Canceling gear range limit 176
Downshifting 176
Upshifting 176
Opening 414
Ashtray 268
Doors from the inside 109
Fuel filler flap 299
Fuel filler flap manually 412
Glove box 262
Panorama sliding/pop-up roof 227
Panorama sliding/pop-up roof* in an
emergency 414
Roller sunblinds 226
Side windows 219
Sliding/pop-up roof* 223
Sliding/pop-up roof* in an
emergency 414
Trunk 110
Trunk from the inside 110
Trunk lid with SmartKey 101
Windows 218
Opening the trunk from the outside 110