2006 MERCEDES-BENZ R350 run flat

366 OperationTires and wheels
Install the valve cap.

Repeat this procedure for each tire.Run Flat Indicator (Canada only)
While the vehicle is being driven, the Run
Flat Indicator monitors the set tire inflation
pressures by evaluating each wheel’s rota-
tional speed. This allows the system to de-
tect a significant loss of pressure in a tire.
If a wheel’s rotational speed changes due
to falling tire inflation pressure, you will
see a corresponding warning message in
the multifunction display.
The Run Flat Indicator may function in a re-
stricted manner or with a delay if:


snow chains are mounted to the
vehicle


winter road conditions prevail


you are driving on a loose surface (e.g.
sand or gravel)


you are driving in a very sporty manner
(involving rapid acceleration or high
speeds in curves)
iIf you have overfilled the tire, release
tire inflation pressure by pushing the
metal stem of the valve with e.g. a tip of
a pen. Then recheck the tire inflation
pressure with the tire gauge.
Warning!
G
When the multifunction display shows the
message
Tire pressure Check tires
,
one or more of your tires is significantly un-
der-inflated. You should stop and check
your tires as soon as possible, and inflate
them to the proper tire inflation pressure as
indicated on the vehicle’s tire information
placard. Driving on a significantly under-in-
flated tire causes the tire to overheat and
can lead to tire failure. Under-inflation also
reduces fuel efficiency and tire tread life,
and may affect the vehicle’s handling and
stopping ability. Each tire, including the
spare, should be checked monthly when
cold and set to the recommended tire infla-
tion pressure as specified in the vehicle
placard and owner’s manual.


367 Operation
Tires and wheels
Reactivating the Run Flat Indicator
The tire inflation pressure monitor must be
reactivated in the following situations:

If you have changed the tire inflation
pressure


If you have replaced the wheels or tires


If you have installed new wheels or
tires

Using the tire placard on the driver’s
door B-pillar or, if available, the inside
of the fuel filler flap, make sure the tire
inflation pressure of all four tires is cor-
rect.
iThe recommended tire inflation pres-
sures for your vehicle can be found on
the tire placard located on the driver’s
door B-pillar (
page 357). The tire in-
flation pressures are not listed in the
owner’s manual.
Warning!
G
The Run Flat Indicator does not indicate a
warning for wrongly selected tire inflation
pressures. Always adjust tire inflation pres-
sure according to the placard on the driver’s
door B-pillar or fuel filler flap.
The Run Flat Indicator does not replace reg-
ular checks of the tire inflation pressures
since a gradual pressure loss in all four tires
cannot be detected by the Run Flat
Indicator.
The Run Flat Indicator is not able to issue a
warning due to a sudden dramatic loss of
tire inflation pressure (e.g. tire blowout
caused by a foreign object). In this case
bring the vehicle to a halt by carefully apply-
ing the brakes and avoiding abrupt steering
maneuvers.
Warning!
G
The Run Flat Indicator can only warn you in
a reliable manner if you have set the correct
tire inflation pressures for each tire.
If an incorrect tire inflation pressure was
set, the system will monitor the pressure ac-
cording to the incorrect value.

368 OperationTires and wheels
Switch on the ignition (
page 38).
Make sure the standard display menu
appears in the multifunction display
(
page 168).

Press buttonk orj repeatedly
until the following message appears in
the multifunction display:

Press buttonæ.
The following message will appear in
the multifunction display:Tire pressure now OK?
If you wish to confirm activation:
Press buttonæ.
The following message will appear in
the multifunction display:Run Flat Indicator
reactivated
After a certain “learning phase”, the Run
Flat Indicator checks the set pressure
values for all four tires.
If you wish to cancel activation:
Press buttonç.
or

Wait until the messageTire pressure now OK?disappears.Checking tire pressure electronically
with the Tire Pressure Monitoring
System (TPMS), (USA only)
iThe T
ire P
ressure M
onitoring S
ystem
(TPMS) is equipped with a combination
low tire pressure/TPMS malfunction
telltale in the instrument cluster
(
page 24). Depending on how the
telltale illuminates, it indicates a low
tire pressure condition or a malfunction
in the TPMS system itself:


If the telltale illuminates continu-
ously, one or more of your tires is
significantly underinflated. There is
no malfunction in the TPMS.


If the telltale flashes for 60 seconds
and then stays illuminated, the
TPMS system itself is not operating
properly.

427 Practical hints
What to do if …
Display message
Possible cause/consequence
Possible solution
Check tires
Then reactivate
Run Flat Indicator
There was a warning message about
a loss in the tire inflation pressure
and the Run Flat Indicator has not
been reactivated yet.

Make sure that the correct tire inflation pressure is set
for each tire.

Then reactivate the Run Flat Indicator.
Run Flat Indicator
inactive
Run Flat Indicator is malfunctioning.

Have the Run Flat Indicator checked by an authorized
Mercedes-Benz Light Truck Center.
Run Flat Indicator
unavailable
The Run Flat Indicator has been
switched off due to an error.

Have the Run Flat Indicator checked by an authorized
Mercedes-Benz Light Truck Center.
Tire pressure
Check tires
The Run Flat Indicator indicates that
the pressure is too low in one or more
tires.

Carefully bring the vehicle to a halt, avoiding abrupt
steering and braking maneuvers. Observe the traffic sit-
uation around you.

Check and adjust tire inflation pressure as required
(page 365).

If necessary, change the wheel (
page 478).

Reactivate the Run Flat Indicator after adjusting the tire
inflation pressure values (
page 365).

481 Practical hints
Flat tire
Removing the wheel
1Alignment bolt
Unscrew upper-most wheel bolt and
remove.

Replace this wheel bolt with alignment
bolt1 supplied in the vehicle tool kit
(page 454).

Remove the remaining wheel bolts.

Remove the wheel.Mounting the spare wheel
1Wheel bolt for 18" and 19" light alloy
wheels
2Wheel bolt for 17" light alloy wheels or
collapsible tire (located in trunk with
spare wheel)
Warning!
G
The jack is intended only for lifting the
vehicle briefly for wheel changes. It is not
suited for performing maintenance work
under the vehicle.

Never start the engine when the vehicle
is raised.


Never lie down under the raised vehicle.
!Do not place wheel bolts in sand or dirt.
This could result in damage to the bolts
and wheel hub threads.
!Wheel bolts2 must be used when
mounting the spare wheel with collaps-
ible tire. The use of any wheel bolts oth-
er than wheel bolts2 for the spare
wheel with collapsible tire will physical-
ly damage the vehicle’s brakes.

551 Index
Roof rack 279
Rubber parts
Cleaning 402
Rubber parts, cleaning 401
Run Flat Indicator (Canada only) 366
S
Safety
Occupant 70
Safety belts see Seat belts
Safety defects
Reporting 19
Safety systems
Driving 97
Seat belt force limiter 80
Seat belt height adjustment 52
Seat belts 77
Cleaning 402
Fastening 50
Height adjustment 52
Proper use of 52, 79
Safety guidelines 74
Warning lamp 410
Seat cushion depth
Adjusting 136Seat heating*
Switching off 143
Switching on 142
Seating capacity 358
Seats 132
Adjusting 42
Easy entry/exit feature* 132
Heating* 141
Multicontour seat* 136
Securing cargo
Cargo tie-down rings 281
Selecting display 179
Self-test
Occupant Classification System 90
Tele Aid* 312
Service
Calling up the service indicator 393
Parts 508
Service and Warranty Booklet
Loss of 509
Service and warranty information 10
Service indicator
Calling up 393
Clearing 393
Service life (tires) 354Setting
Convenience functions 177, 189
Cruise control 265
Day (clock) 181
Daytime running lamp mode 182
Higher speed in cruise control 267
Hours (clock) 180
Individual vehicle settings 174
Interior lighting delayed
switch-off 185
Lamps and lighting (control
system) 182
Language, multifunction display 178,
179
Locator lighting 183
Lower speed in cruise control 267
Miles/kilometers in
speedometer 178
Minutes (clock) 180
Month (clock) 181
Slower speed in cruise control 267
Speed in cruise control 269
Speedometer display mode 178
Temperature (interior) 222, 236
Units in speedometer 178
Year (clock) 181

555 Index
Tire inflation pressure
Checking 344, 363, 365
Tire inflation pressure see the placard on
the fuel filler flap
Tire inspection 354
Tire load rating 387, 534
Tire ply composition and material
used 388
Tire speed rating 336, 378, 388, 534
Tire terminology 385
Tire traction 335
Tires 353, 514
Direction of rotation 356
Driving instructions 334
Low tire pressure telltale 412
Retreads 353
Rims and tires 514
Rotating 388
Run Flat Indicator 366
Service life 354
Temperature 364, 384
TPMS malfunction telltale 412
Tread depth 355, 390
Wear pattern 389
Winter 390
Tools 454Tow-away alarm 106
Arming 106
Disarming 106
Disarming for transport 106
Towing eye
Front 501
Rear 502
Towing the vehicle
Stranded vehicle 502
TPMS malfunction telltale* 25
Traction 205, 388, 534
Transfer case 534
Tread 388, 534
Tread depth 355
Tread depth (tires) 390
Treadwear indicators 388, 534
Trip computer 192
Trip odometer
Resetting 159
Turn signal lamps
Cleaning lenses 399
Replacing bulbs 466
Turn signals 58
Turning off the engine 66
TWR (Tongue Weight Rating) 534U
Uniform Tire Quality Grading
Standards 388, 534
Units
Setting speedometer units 178
Unlocking 36, 110
Centrally from inside 131
Driver’s door in an emergency 459
Fuel filler flap 342
Global 112
Global (SmartKey with
KEYLESS-GO*) 118
In an emergency 459
Selective settings 112, 118
Tailgate with SmartKey 114
Vehicle in an emergency 319
With the SmartKey 36
With the SmartKey with
KEYLESS-GO* 114
Unlocking and opening
Tailgate with KEYLESS-GO* 120
Unlocking with KEYLESS-GO* 37
Uphill driving
Cruise control 265