Page 405 of 570

404 Operation
Tires and wheels
Rotating tires
Tire rotation can be performed on vehicles
with tires of the same dimension all
around. If your vehicle is equipped with
tires of the same dimension all around,
tires can be rotated, observing a
front-to-rear rotation pattern that will
maintain the intended rotation (spinning)
direction of the tire (
page 375).
In some cases, such as when your vehicle
is equipped with mixed-size tires (different
tire dimension front vs. rear), tire rotation
is not possible.If applicable to your vehicle’s tire configu-
ration, tires can be rotated according to
the tire manufacturer’s recommended in-
tervals in the tire manufacturer’s warranty
pamphlet located in your vehicle literature
portfolio. If none is available, tires should
be rotated every 3 000 to 6 000 miles
(5 000 to 10 000 km), or sooner if neces-
sary, according to the degree of tire wear.
The same rotation (spinning) direction
must be maintained (
page 375).
Rotate tires before the characteristic tire
wear pattern becomes visible (shoulder
wear on front tires and tread center wear
on rear tires).
Thoroughly clean the mounting face of
wheels and brake disks, i.e. the inner side
of the wheels/tires, during each rotation.
Check for and ensure proper tire inflation
pressure.For information on wheel change, see “Flat
tire” (
page 497).
Warning!G
Rotate front and rear wheels only if the tires
are of the same dimension.
If your vehicle is equipped with mixed-size
tires (different tire dimensions front vs.
rear), tire rotation is not possible.
Warning!G
Have the tightening torque checked after
changing a wheel. Wheels could become
loose if not tightened with a torque of
110 lb-ft (150 Nm).
Only use genuine Mercedes-Benz wheel
bolts specified for your vehicle’s rims.
Page 505 of 570
504 Practical hints
Flat tire
6Wheel wrench
Tighten the five wheel bolts evenly, fol-
lowing the diagonal sequence illustrat-
ed (1 to 5), until all bolts are tight.
Observe a tightening torque of
110 lb-ft (150 Nm).
Store jack and all other vehicle tool kit
items back into the storage well.
Warning!G
Have the tightening torque checked after
changing a wheel. The wheels could come
loose if they are not tightened to a torque of
110 lb-ft (150 Nm).
iThe removed road wheel cannot be stored in
the spare wheel well under the cargo compart-
ment floor, but should be transported in the
cargo compartment wrapped in a protective
wrap.
Vehicles with TPMS or Advanced TPMS*:
Do not activate the tire inflation pressure moni-
tor until a full size wheel/tire with functioning
sensor has been placed back into service on the
vehicle.
Page 531 of 570
530 Technical data
Engine
ModelR 320 CDI (251.122)1R 350 (251.165)1
1The quoted data apply only to the standard vehicle. See an authorized Mercedes-Benz Light Truck Center for the corresponding data of all special bodies and special
equipment.
Engine642272
Mode of operationDiesel 4-stroke engine4-stroke engine, gasoline injection
No. of cylinders66
Bore3.27 in (83.00 mm)3.66 in (92.90 mm)
Stroke3.62 in (92.00 mm)3.39 in (86.00 mm)
Total piston displacement182 cu in (2 987 cm3)213cuin (3498cm3)
Compression ratio16.5:110.7:1
Output acc. to SAE J 1349221 hp/3 800 rpm
(165 kW/3 800 rpm)268 hp/6 000 rpm2
(200 kW/6 000 rpm)
2Premium fuel required. Performance may vary with fuel octane rating.
Maximum torque acc. to SAE J 1349398 lb-ft/1 600 - 2 400 rpm
(540 Nm/1 600 - 2 400 rpm)258 lb-ft/2 400 - 5 000 rpm
(350 Nm/2 400 - 5 000 rpm)
Maximum engine speed4 500 rpm6500 rpm
Firing order1-4-2-5-3-61-4-3-6-2-5
Poly-V-belt2 035 mm2404 mm
Page 532 of 570
531 Technical data
Engine
ModelR 500 (251.175)1
1The quoted data apply only to the standard vehicle. See an authorized Mercedes-Benz Light Truck Center for the corresponding data of all special bodies and special
equipment.
R 63 AMG (251.177)1
Engine113156
Mode of operation4-stroke engine, gasoline injection4-stroke engine, gasoline injection
No. of cylinders88
Bore3.82 in (97.00 mm)4.02 in (102.20 mm)
Stroke3.31 in (84.00 mm)3.72 in (94.60 mm)
Total piston displacement303 cu in (4 966 cm3)379 cu in (6 208 cm3)
Compression ratio10:111.3:1
Output acc. to SAE J 1349302 hp/5 600 rpm2
(225 kW/5 600 rpm)
2Premium fuel required. Performance may vary with fuel octane rating.
503 hp/6 800 rpm2
(375 kW/6 800 rpm)
Maximum torque acc. to SAE J 1349339 lb-ft/2 700 - 4 750 rpm
(460 Nm/2 700 - 4 750 rpm)465 lb-ft/5 200 rpm
(630 Nm/5 200 rpm)
Maximum engine speed6300 rpm7 200 rpm
Firing order1-5-4-2-6-3-7-81-5-4-2-6-3-7-8
Poly-V-belt2370 mm2369 mm
Page 536 of 570
535 Technical data
Electrical system
Electrical system
ModelR350R500R63AMG
Generator (alternator)14 V/150 A14 V/180 A14 V/180 A
Starter motor12 V/1.4 kW12 V/1.7 kW12 V/2.2 kW
Battery12 V/70 Ah12 V/95 Ah12 V/95 Ah
Spark plugsNGK PLKR 6ANGK PFR 5R-11NGK T20036N
Electrode gap0.031 in (0.8 mm)0.031 in (0.8 mm)0.039 in (1.0 mm)
Tightening torque15 - 22 lb-ft (20 - 30 Nm)15 - 22 lb-ft (20 - 30 Nm)15 - 18 lb-ft (20 - 25 Nm)
ModelR320 CDI
Generator (alternator)14 V/220 A
Starter motor12 V/2.2 kW
Battery12 V/95 Ah
Page 566 of 570

565 Index
Technical data 540
Air conditioning refrigerant 539
Brake fluid 539, 541
Coolant 539, 543
Dimensions, Vehicle 536
Electrical system 535
Engine 530
Engine oil 538, 540
Engine oil additives 540
Fuel requirements 542
Fuels, coolants, lubricants, etc. 538
Gasoline additives 542
Premium unleaded gasoline 541
Rims 532
Tires 532
Weights 537
Windshield washer and headlamp
cleaning* system 539, 546
Tele Aid* 330
Call priority 336
Emergency calls 331
Hands-free microphone 33
Information 334
Initiating an emergency call
manually 332Messages in the multifunction
display 469
Remote door unlock 336
Roadside Assistance 333
SOS button 332
Stolen Vehicle Recovery
services 337
System self-check 331
Telephone cradle
Changing 329
Telephone* 327
Answering/ending a call 194, 195
Changing mobile phone cradle 329
Dialing a number from the phone
book 195
Hands-free microphone 33
Inserting in cradle 328
Installing a different mobile phone
cradle 329
Messages in the multifunction
display 469
Operation 193
Phone book* 195
Redialing 196
Removing from cradle 329Temperature
Coolant 166
Display mode, Status indicator 180
Interior temperature, setting see
Climate control or Automatic climate
control (3-zone)*
Outside temperature 167
Sensor, Interior temperature 235
Sensor, Outside temperature 158
Tether attachment points
Children in the vehicle 84
3-zone automatic climate control* 232
Ticket holder 317
Tie-down rings 299
Tightening torque, Wheel bolts 504
Tilt/sliding panel* see Panorama roof with
power tilt/sliding panel*
Tilt/sliding sunroof* see Power tilt/sliding
sunroof*
Time 181
TIN 396, 403
Tire and Loading Information
Placard 377
Terminology 401
Tire Identification Number see TIN
Page 569 of 570

568 Index
W
Warning indicators
Parktronic* 293
Warning lamps see Lamps, Indicator and
warning
Warning sounds
Distance warning function* 284
Distronic* 275
Exterior lamps 68
Parking brake 58
Parktronic system* 293
Seat belt telltale 82, 426, 427
Warranty coverage 10, 525
Washer fluid see Windshield washer fluid
Washer reservoir level 372
Washing the vehicle 410
Wear pattern, Tires 404
Weights, Vehicle 537
Wheel
Bolts 500
Change 497
Removing 500
Spare 534
Tightening torque 504Wheels
Sizes 532
Wheels, Tires and 373
Window curtain air bags 78
Windows see Power windows
Windshield
Cleaning 415
Defogging 225, 240
Infrared reflecting* 344
Washer fluid 546
Windshield washer fluid 372
Messages in the multifunction
display 469
Mixing ratio 546
Refilling 372
Reservoir level 372
Windshield washer system 372, 546
Windshield wipers 60
Cleaning wiper blades 415
Fast continuous wiping 61
Fast intermittent wiping 61
Rear window wiper/washer 62
Replacing wiper blades 494
Slow continuous wiping 61
Slow intermittent wiping 61Winter driving
Snow chains 406
Tires 405
Winter driving instructions 354
Winter tires 405
Wiping and washing simultaneously 63
Wood trims, cleaning 418