brake fluid MERCEDES-BENZ R320CDI 2007 R171 Owner's Manual

Contents
Flat tire .............................................. 497
Preparing the vehicle.................... 497
Mounting the spare wheel ............ 498
Bleeding the fuel system
(diesel engine only) ............................ 505
Battery ............................................... 506
Disconnecting, removing,
reinstalling and reconnecting
the battery.................................... 508
Charging the battery .................... 513
Jump starting ..................................... 514
Towing the vehicle ............................. 517
Installing towing eye bolt.............. 518
Stranded vehicle .......................... 519
Fuses ................................................. 520
Fuse box in engine
compartment................................ 521
Fuse box in cargo compartment ... 521
Fuse box in passenger
compartment................................ 522
Emergency engine shut-down ...... 522
Technical data................................. 523
Parts service ...................................... 524
Warranty coverage............................. 525
Loss of Service and Warranty
Information Booklet ..................... 525
Identification labels ........................... 526
Layout of poly-V-belt drive ................. 528
R 320 CDI .................................... 528
R 350 ........................................... 528
R 500 ........................................... 528
R 63 AMG..................................... 529
Engine................................................ 530
Rims and tires.................................... 532
Same size tires ............................. 533
Spare wheel (collapsible tire) ....... 534
Electrical system ............................... 535
Main Dimensions ............................... 536
Weights.............................................. 537Fuels, coolants, lubricants, etc. ......... 538
Capacities .................................... 538
Engine oils ................................... 540
Engine oil additives ...................... 540
Air conditioning refrigerant .......... 540
Brake fluid.................................... 541
Premium unleaded gasoline
(gasoline engine) .......................... 541
Gasoline additives
(gasoline engine) .......................... 542
Fuel requirements ........................ 542
Coolants ...................................... 543
Windshield washer and
headlamp cleaning* system......... 546
Index................................................. 547

349 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
subjected to moderate loads, you should
occasionally 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.
Refer to the description of the Brake Assist
System (BAS) (
page 102).Brake pad wear or a leak in the system may
be the reason for low brake fluid level in
the reservoir.
The brake fluid level in the reservoir may
be too low if the brake warning lamp
in the instrument cluster comes on and an
acoustic warning sounds although the
parking brake is released (
page 421).
Observe additional messages in the multi-
function display that may appear
(
page 454).
Have the brake system inspected
immediately. Contact an authorized
Mercedes-Benz Light Truck Center.
All checks and service work on the brake
system should be carried out by qualified
technicians only. Contact an authorized
Mercedes-Benz Light Truck Center.
Only install brake pads and brake fluid
recommended by Mercedes-Benz.
After hard braking, it is advisable to drive
on for some time, rather than immediately
park, so that the air stream will cool down
the brakes faster.
Warning!G
Make sure not to endanger any other road
users when carrying out these braking
maneuvers.
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.
!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 prevent overheating of the brakes and
reduces brake pad wear.
When using the engine’s braking power, a drive
wheel may not spin for an extended period of
time, e.g. on slippery road surfaces. This may
cause serious damage to the drivetrain which is
not covered by the Mercedes-Benz Limited War-
ranty.

362 Operation
At the gas station
Low outside temperatures
(diesel engine)
To prevent malfunctions, diesel fuel with
improved cold flow characteristics is of-
fered in the winter months. Check with
your fuel retailer.Check regularly and before a long trip
Open the hood (page 364).
1Coolant level
2Brake fluid
3Windshield washer system and
headlamp cleaning system*Engine oil level
For more information on engine oil, see
“Engine oil” (page 366).
Coolant
For normal replenishing, use water (pota-
ble water quality). For more information,
see “Coolant level” (
page 370) and
“Fuels, coolants, lubricants, etc.”
(
page 538).
Brake fluid
!Do not fill the tank with gasoline. Do not
blend diesel fuel with gasoline or kerosine. The
fuel system and engine will otherwise be dam-
aged, which is not covered by the
Mercedes-Benz Limited Warranty.
!If you find that the brake fluid in the brake
fluid reservoir has fallen to the minimum mark or
below, have the brake system checked for brake
pad thickness and leaks immediately. Contact an
authorized Mercedes-Benz Light Truck Center
immediately. Do not add brake fluid as this will
not solve the problem. For more information, see
“Brake fluid” (
page 541).

410 Operation
Vehicle care
Cleaning and care of the vehicle
Regular and proper care will help to main-
tain the value of your vehicle. The best way
to protect your vehicle from harmful envi-
ronmental influences is to wash it and use
protective treatments regularly.While in operation, even while parked, your
vehicle is subjected to varying external in-
fluences which, if gone unchecked, can at-
tack the paintwork as well as the vehicle
underbody and cause lasting damage.
Such damage is caused not only by
extreme and varying climatic conditions,
but also by:

Air pollution

Road salt

Tar

Gravel and stone chipping
To avoid paint damage, you should imme-
diately remove:

Grease and oil

Fuel

Coolant

Brake fluid

Bird droppings

Insects

Tree resins, etc.Frequent washing reduces and/or elimi-
nates the aggressiveness and potency of
the above adverse influences.
More frequent washings are necessary to
deal with unfavorable conditions:

near the ocean

in industrial areas (smoke, exhaust
emissions)

during winter operation
You should check your vehicle from time to
time for stone chipping or other damage.
Any damage should be repaired as soon as
possible to prevent corrosion.
In doing so, do not neglect the underbody
of the vehicle. A prerequisite for a thor-
ough check is a washing of the underbody
followed by a thorough inspection. Dam-
aged areas need to be re-undercoated.
Your vehicle has been treated at the facto-
ry with a wax-base rustproofing in the body
cavities which will last for the lifetime of
the vehicle. Post-production treatment is
neither necessary nor recommended by
Warning!G
Many cleaning products can be hazardous.
Some are poisonous, others are flammable.
Always follow the instructions on the partic-
ular container. Always open your vehicle’s
doors or windows when cleaning the inside.
Never use fluids or solvents that are not de-
signed for cleaning your vehicle.
Always lock away cleaning products and
keep them out of reach of children.

421 Practical hints
What to do if …
ProblemPossible cause/conse-
quenceSuggested solution
;(USA only)
3(Canada only)
The red brake warning lamp
comes on while driving and an
acoustic warning sounds.You are driving with the
parking brake set.Release the parking brake
(
page 57).
There is insufficient brake fluid
in the reservoir.Risk of accident! Carefully stop the
vehicle in a safe location or as soon as
it is safe to do so.
Apply the parking brake (page 66).
Contact an authorized
Mercedes-Benz Light Truck Center.
Do not add brake fluid! This will not
solve the problem.
Warning!G
Driving with the brake warning lamp illumi-
nated can result in an accident. Have your
brake system checked immediately if the
brake warning lamp stays on.
Do not add brake fluid before checking the
brake system.Overfilling the brake fluid res-
ervoir can result in spilling brake fluid on hot
engine parts and the brake fluid catching
fire. You can be seriously burned.!If you find that the brake fluid in the brake
fluid reservoir has fallen to the minimum mark or
below, have the brake system checked for brake
pad thickness and leaks.

454 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
;(USA only)
3(Canada only)
Check
brake fluid levelThere is insufficient brake fluid
in the reservoir.Risk of accident! Carefully stop the vehi-
cle in a safe location or as soon as it is
safe to do so.
Apply the parking brake (page 66).
Contact an authorized Mercedes-Benz
Light Truck Center. Do not add brake flu-
id! This will not solve the problem.
Warning!G
Driving with the message Check brake
fluid level
displayed can result in an ac-
cident. Have your brake system checked im-
mediately. Do not add brake fluid before
checking the brake system. Overfilling the
brake fluid reservoir can result in spilling
brake fluid on hot engine parts and the
brake fluid catching fire. You could be
seriously burned.
!If you find that the brake fluid in the brake
fluid reservoir has fallen to the minimum mark or
below, have the brake system checked for brake
pad thickness and leaks.

539 Technical data
Fuels, coolants, lubricants, etc.
ModelCapacityFuels, coolants, lubricants, etc.
Power steeringapprox. 1.3 US qt (1.2 l)MB Power Steering Fluid
Front wheel hubsapprox. 1.5 oz (43 g) eachHigh temperature roller bearing grease
Brake systemMB Brake Fluid (DOT 4+)
Cooling systemR320CDI
R350
R500
R63AMG10.0 US qt (9.5 l)
10.0 US qt (9.5 l)
11.1 US qt (10.5 l)
12.2 US qt (11.5 l)MB Anticorrosion/Antifreeze
Fuel Tank
including a reserve of
All, except R 63 AMG
R63AMG
21.1 US gal (80.0 l)
approx. 3.4 US gal (13.0 l)
approx. 4.0 US gal (15.0 l)Premium unleaded gasoline:
Minimum Posted Octane 91
(Avg.of96RON/86MON)
Air conditioning systemR-134a refrigerant and special PAG lubricant
oil (never R-12)
Windshield washer and
headlamp cleaning*
system8.0 US qt (7.6 l)MB Windshield Washer Concentrate1
1Use MB Windshield Washer Concentrate “S” and water for temperatures above freezing or MB Windshield Washer Concentrate “S” and commercially available
premixed windshield washer solvent/antifreeze for temperatures below freezing. Follow suggested mixing ratios (page 546).

541 Technical data
Fuels, coolants, lubricants, etc.
Brake fluid
Only brake fluid approved by
Mercedes-Benz is recommended. Your
authorized Mercedes-Benz Light Truck
Center will provide you with additional
information.Premium unleaded gasoline
(gasoline engine)
Warning!G
During vehicle operation, the boiling point of
the brake fluid is continuously reduced
through the absorption of moisture from the
atmosphere. Under extremely strenuous
operating conditions, this moisture content
can lead to the formation of bubbles in the
system, thus reducing the system’s
efficiency.
Therefore, the brake fluid must be
replaced regularly. Refer to your vehicle’s
Maintenance Booklet for replacement
interval.
Warning!G
Gasoline is highly flammable and poisonous.
It burns violently and can cause serious
injury.
Never allow sparks, flame or smoking mate-
rials near gasoline!
Turn off the engine before refueling.
Whenever you are around gasoline, avoid in-
haling fumes and skin or clothing contact,
extinguish all smoking materials.
Direct skin contact with gasoline and the in-
halation of gasoline vapors are damaging to
your health.
!To maintain the engine’s durability and per-
formance, premium unleaded gasoline must be
used. If premium unleaded is not available and
low octane fuel is used, follow these precau-
tions:

Have the fuel tank only partially filled with
unleaded regular and fill up with premium
unleaded as soon as possible.

Avoid full throttle driving and abrupt acceler-
ation.

Do not exceed an engine speed of 3000 rpm
if the vehicle is loaded with a light load such
as two persons and no luggage.

Do not exceed2/3of maximum accelerator
pedal position if the vehicle is fully loaded or
operating in mountainous terrain.

549 Index
Beverage holder see Cup holder
Bleeding the fuel system
(diesel engine) 505
Bolts, Spare wheel 500
Bottle opener 317
Brake Assist System see BAS
Brake fluid 541
Checking 362
Messages in the multifunction
display 454
Brake lamp
Cleaning lenses 413
Messages in the multifunction
display 463–468
Replacing bulbs 484
Brake pads 348
Messages in the multifunction
display 452
Brakes 348
High-performance brake system
(AMG vehicles only) 350
Warning lamp 421
Break-in the vehicle 346
Bulbs, replacing see Replacing bulbsC
California retail buyers and lessees,
Important notice for 11
Call priority, Tele Aid* 336
Can holder see Cup holder
Capacities and recommended
fuel/lubricants 538
Card holder 32, 317
Cargo compartment
Tie-down rings 299
Cargo compartment cover blind* 306
Cargo tie-down rings 299
Carpets, Cleaning 417
Catalytic converter
(gasoline engine) 357
CD changer* 172, 311
CD player 172
Center console 31
Central locking 189
Automatic 130
Locking/unlocking from the
inside 130
Central locking switch 130Certification label 526, 527
CHECK ENGINE malfunction
indicator lamp 423, 424
Checking tire pressure electronically
Advanced Tire Pressure Monitoring
System (Advanced TPMS)*,
(Canada only) 388
Tire Pressure Monitoring System
(TPMS), (USA only) 385
Child safety
Infant and child restraint systems 85
Children in the vehicle 84
Air bags 75, 86
Blocking rear door window
operation 97
Indicator lamp, Front passenger front
air bag 92
Infant and child restraint
systems 93, 95
LATCH-type child seat anchors 93
Occupant Classification System
(OCS) 88
Cigarette lighter* 321

553 Index
Emission control 358
Information label 527
System warranties 10
Vacuum routing diagram label 527
Engine
Belt layout 528
Break-in recommendations 346
Cleaning 412
Compartment 364
Malfunction indicator lamp 29, 423
Maximum engine speed 157, 530
Number 527
Starting 54
Tachometer 29, 157
Technical data 530
Turning off 67
Engine coolant see CoolantEngine oil 366, 540
Adding 369, 540
Additives 540
Changing 369, 540
Checking level 366
Checking level, Control system 366
Checking level, Dipstick 368
Consumption 366
Filler neck 369
Messages in the multifunction
display 366, 367, 458
Recommended engine oils and
filters 540
ESP
®102
Messages in the multifunction
display 441–442
Warning lamp 27, 425
ETD 82
Safety guidelines 76
Extending cargo compartment 301
Exterior rear view mirrors 48, 212
Power folding* 214
Synchronizing 214F
Fastening the seat belts 51
Filler neck, Engine oil 369
First aid kit 472
Flat tire 497
Collapsible tire 475, 500, 534
Jacking up the vehicle 498
Lowering the vehicle 503
Mounting the spare wheel 500
Preparing the vehicle 498
Spare wheel 475, 500, 534
Floormats 343
Fluids
Automatic transmission fluid 370,
538
Brake fluid 362, 538, 541
Capacities 538
Engine coolant 362, 370, 539, 543
Engine oil 366, 538, 540
Power steering fluid 538
Windshield washer and headlamp
cleaning* system 372, 539