25 At a glance
Instrument cluster
Item
Page
1
LLeft turn signal
indicator lamp
2
vABS/ESP
® warning
lamp
353
3
Speedometer
4
Multifunction display
147
5
lDistance warning
lamp
Vehicles without Distronic*:
Warning lamp without func-
tion. It illuminates with the
ignition on. It should go out
when the engine is running.
357
6
KRight turn signal
indicator lamp
7
Coolant temperature indi-
cator with:•Coolant temperature
warning lamp
357
Item
Page
8
Tachometer with:1Supplemental
Restraint System
(SRS) indicator lamp
359
-Antilock Brake Sys-
tem (ABS) indicator
lamp
352
AHigh beam headlamp
indicator lamp
138
9
Main odometer with:
Selector lever position
49
Program mode
182
a
Clock with:
162
;Brake warning lamp,
USA only
354
3Brake warning lamp,
Canada only
354
Item
Page
úEngine malfunction
indicator lamp, USA
only
355
±Engine malfunction
indicator lamp, Cana-
da only
355
HCombination low tire
pressure/TPMS mal-
function telltale*,
Canada only
360
b
Fuel display with:AFuel reserve warning
lamp
358
c
Button for:
Resetting trip odometer
146
Adjusting instrument
cluster illumination
144
Confirming new time
settings
162
316 OperationTires and wheels
Switch on the ignition (
page 36).
Make sure the standard display menu
appears in the multifunction display
(
page 153).
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 OK now?
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 val-
ues for all four tires.
If you wish to cancel activation:
Press buttonç.
or
Wait until the messageTire pressure OK now?disappears.Checking tire pressure electronically
with the Advanced Tire Pressure Moni-
toring System* (Advanced TPMS*),
(Canada only)
iThe Advanced T
ire P
ressure M
onitoring
S
ystem* (Advanced TPMS) is equipped
with a combination low tire pres-
sure/TPMS malfunction telltale in the
instrument cluster (
page 25).
Depending on how the telltale illumi-
nates, 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 under-inflated. 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.
317 Operation
Tires and wheels
The TPMS only functions on wheels that
are equipped with the proper electronic
sensors. It monitors the tire inflation pres-
sure, as selected by the driver, in all four
tires. A warning is issued to alert you to a
decrease in pressure in one or more of the
tires.
Tire pressure inquiries are made using the
multifunction display.The present inflation
pressures are displayed only after a few
minutes travel time.
Switch on the ignition (
page 36).
Press thej or kbutton until
the current inflation pressures for each
tire appear in the multifunction display.
iPossible differences between the read-
ings of a tire pressure gauge of an air
hose, e.g. gas station equipment, and
the vehicle’s control system can occur.
Usually the readings issued by the con-
trol system are more precise.
iWhen the message
Tire pressure
displayed only after driving a few
minutes
appears in the display, the in-
dividual inflation pressure values are
matched with the tires. The individual
values are displayed after a few min-
utes driving.
Warning!
G
It is the driver’s responsibility to calibrate
the TPMS on the recommended cold infla-
tion pressure. Underinflated tires affect the
ability to steer or brake the vehicle. You
might lose control over the vehicle.iWith a spare wheel without wheel sen-
sor mounted, the system may still indi-
cate the tire inflation pressure of the
removed wheel for some minutes. If
this happens, keep in mind that the in-
dicated value where the spare wheel is
mounted does not reflect the actual
spare tire inflation pressure.
318 OperationTires and wheelsWarning!
G
The TPMS does not indicate a warning for
wrongly selected inflation pressures. Always
adjust tire inflation pressure according to
the placard on the driver’s door B-pillar or, if
available, the supplemental tire pressure in-
formation on the inside of the fuel filler flap.
The TPMS is not able to issue a warning due
to a sudden dramatic loss of pressure (e.g.
tire blowout caused by a foreign object). In
this case bring the vehicle to a halt by care-
fully applying the brakes and avoiding
abrupt steering maneuvers.
Warning!
G
Each tire, including the spare (if provided),
should be checked monthly when cold and
inflated to the inflation pressure recom-
mended by the vehicle manufacturer on the
vehicle placard or the tire inflation pressure
label. (If your vehicle has tires of a different
size than the size indicated on the vehicle
placard or the tire inflation pressure label,
you should determine the proper tire infla-
tion pressure for those tires).
As an added safety feature, your vehicle has
been equipped with a tire pressure monitor-
ing system (TPMS) that illuminates a low tire
pressure telltale when one or more of your
tires is significantly under-inflated. Accord-
ingly, when the low tire pressure telltale illu-
minates, you should stop and check your
tires as soon as possible, and inflate them to
the proper pressure. Driving on a significant-
ly under-inflated tire causes the tire to over-
heat and can lead to tire failure.
Under-inflation also reduces fuel efficiency
and tire tread life, and may affect the vehi-
cle’s handling and stopping ability. Please
note that the TPMS is not a substitute for
proper tire maintenance, and it is the driv-
er’s responsibility to maintain correct tire
pressure, even if under-inflation has not
reached the level to trigger illumination of
the TPMS low tire pressure telltale.
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate
when the system is not operating properly.
The TPMS malfunction indicator is com-
bined with the low tire pressure telltale.
When the system detects a malfunction, the
telltale will flash for approximately 1 minute
and then remain continuously illuminated.
This sequence will continue upon subse-
quent vehicle start-ups as long as the mal-
function exists. When the malfunction
indicator is illuminated, the system may not
be able to detect or signal low tire pressure
as intended.
319 Operation
Tires and wheels
Reactivating Advanced TPMS*
The TPMS must be reactivated when you
have adjusted the tire inflation pressure to
a new level (e.g. because of different load
or driving conditions). The TPMS is then
recalibrated to the current tire inflation
pressures.
Using the tire placard on the driver’s
door B-pillar or, if available, the supple-
mental tire pressure information on the
inside of the fuel filler flap, make sure
the tire inflation pressure of all four
tires is correct.
TPMS malfunctions may occur for a variety
of reasons, including the installation of in-
compatible replacement or alternate tires or
wheels on the vehicle that prevent the TPMS
from functioning properly. Always check the
TPMS malfunction telltale after replacing
one or more tires or wheels on your vehicle
to ensure that the replacement or alternate
tires and wheels allow the TPMS to continue
to function properly.
iIf a condition causing the TPMS to mal-
function develops, it may take up to
10 minutes for the system to signal a
malfunction using the TPMS telltale
flashing and illumination sequence.
The telltale extinguishes after a few
minutes driving if the malfunction has
been corrected.iOperating radio transmission equip-
ment (e.g. wireless headsets, two-way
radios) in or near the vehicle could
cause the TPMS to malfunction.
Warning!
G
It is the driver’s responsibility to calibrate
the TPMS on the recommended cold infla-
tion pressure. Underinflated tires affect the
ability to steer or brake the vehicle. You
might lose control over the vehicle.
320 OperationTires and wheels
Press buttonè orÿ on the mul-
tifunction steering wheel repeatedly
until the standard display menu ap-
pears in the multifunction display
(page 153).
Press thej or kbutton repeat-
edly until you see the current inflation
pressures for each tire appear in the
multifunction display or the following
message appears in the multifunction
displayTire pressure
displayed only
after driving a
few minutes
Press the reset button (
page 25).
The following message will appear in
the multifunction display:
Check current
tire pressure?
Press the æbutton.
The following message will appear in
the multifunction display:Tire pres. monitor
reactivatedAfter a few minutes driving, the current
tire inflation pressure values are ac-
cepted as reference values and then
monitored.
If you wish to cancel activation:
Press the çbutton.
iReactivate the TPMS after adjusting
the tire inflation pressure to the infla-
tion pressure recommended for the
vehicle operating condition. Tire pres-
sure should only be adjusted on cold
tires. Observe the recommended tire
inflation pressure on the placard on the
driver's door B-pillar (
page 305).
Some vehicles may have supplemental
tire pressure information for driving at
high speeds (
page 312) or for vehicle
loads less than the maximum loaded
vehicle condition. If such information is
provided, it can be found on the inside
of the fuel filler flap.
321 Operation
Tires and wheels
Potential problems associated with
underinflated and overinflated tires
Underinflated tires
Underinflated tires can:
cause excessive and uneven tire wear
adversely affect fuel economy
lead to tire failure from being
overheated
adversely affect handling
characteristicsOverinflated tires
Overinflated tires can:
adversely affect handling
characteristics
cause uneven tire wear
be more prone to damage from road
hazards
adversely affect ride comfort
increase stopping distance
MOExtended system*
The MOExtended system allows you to
continue driving your vehicle even if there
is a total loss of pressure in one or more
tires.
You may only use the MOExtended system
in conjunction with the Run Flat Indicator*
or the Advanced TPMS* (Canada only)
(page 314).
For information on driving in case of pres-
sure loss in one or more tires (emergency
mode), see the “Practical hints” section
(page 429).
Warning!
G
Follow recommended tire inflation
pressures.
Do not underinflate tires. Underinflated tires
wear excessively and/or unevenly,
adversely affect handling and fuel economy,
and are more likely to fail from being
overheated.
Warning!
G
Follow recommended tire inflation
pressures.
Do not overinflate tires. Overinflated tires
can adversely affect handling and ride
comfort, wear unevenly, increase stopping
distance, and result in sudden deflation
(blowout) because they are more likely to
become punctured or damaged by road
debris, potholes etc.
360 Practical hintsWhat to do if …Problem
Possible cause/consequence
Suggested solution
H
Combination low tire
pressure/TPMS malfunction tell-
tale for the Advanced TPMS* illu-
minates continuously.
The Advanced TPMS* detects a loss of pres-
sure in at least one tire.
Carefully bring the vehicle to a halt,
avoiding abrupt steering and braking
maneuvers. Observe the traffic situa-
tion around you.
Read and observe messages in the
multifunction display.
If the tire inflation pressure in the respec-
tive tire(s) has (have) been corrected, the
combination low tire pressure/TPMS
malfunction telltale goes out after few
minutes driving.
H
Combination low tire
pressure/TPMS malfunction tell-
tale for the Advanced TPMS*
flashes for 60 seconds and then
stays illuminated.
There is a malfunction in the Advanced
TPMS*.
Read and observe messages in the
multifunction display.
Have the Advanced TPMS* checked
by an authorized Mercedes-Benz Cen-
ter.
After the malfunction has been remedied
the combination low tire pressure/TPMS
malfunction telltale goes out after few
minutes driving.