2008 MERCEDES-BENZ CLK550 TPMS

29 At a glance
Instrument cluster
ItemPage
1LLeft turn signal indica-
tor lamp56
2vESP® warning lamp384
3Speedometer
4Multifunction display141
5lDistance warning
lamp
Warning lamp without func-
tion. It illuminates with the ig-
nition on. It should go out
when the engine is running.
6KRight turn signal indi-
cator lamp56
7Coolant temperature
indicator with:139
•Coolant temperature
warning lamp382
8Tachometer with:140
1Supplemental
Restraint System
(SRS) indicator lamp64,
387
ItemPage
-Antilock Brake Sys-
tem (ABS) indicator
lamp378
385
AHigh beam headlamp
indicator lamp133
BLow beam headlamp
indicator lamp129
9Main odometer with:

Gear selector lever
position174

Program mode178
aClock with:140
;Brake warning lamp,
USA only380
3Brake warning lamp,
Canada only380
ItemPage
úEngine malfunction in-
dicator lamp,
USA only381
±Engine malfunction in-
dicator lamp,
Canada only381
HCombination low tire
pressure/TPMS
malfunction telltale388
CRoll bar warning lamp
(CLK cabriolet)385
bFuel display with:
AFuel reserve warning
lamp385
cReset button for:

Resetting trip odometer139

Adjusting instrument
cluster illumination138

Confirming new time set-
tings160

344 Operation
Tires and wheels
Checking tire pressure electronically
with the Tire Pressure Monitoring
System (TPMS), (USA only)
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.
iThe Tire Pressure Monitoring System
(TPMS) is equipped with a combination low tire
pressure/TPMS malfunction telltale in the
instrument cluster (
page 29). 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 continuously, one
or more of your tires is significantly underin-
flated. 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.
iThis device complies with Part 15 of the
FCC Rules. Operation is subject to the following
two conditions:
(1) This device may not cause harmful interfer-
ence, and
(2) this device must accept any interference
received, including interference that may
cause undesired operation.
Any unauthorized modification to this device
could void the user’s authority to operate the
equipment.Warning!G
The TPMS does not indicate a warning for
wrongly selected inflation pressures. Always
adjust tire inflation pressure according to
the Tire and Loading Information placard on
the driver’s door B-pillar or, if available, the
supplemental tire pressure information 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.

345 Operation
Tires and wheels
Warning!G
Each tire, including the Minispare, should be
checked monthly when cold and inflated to
the inflation pressure recommended by the
vehicle manufacturer on the Tire and
Loading Information placard or, if available,
on the tire inflation pressure label. If your ve-
hicle has tires of a different size than the
size indicated on the Tire and Loading
Information placard or, if available, the tire
inflation pressure label, you should deter-
mine the proper tire inflation 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 underinflated. 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 underinflated tire causes the tire to over-
heat and can lead to tire failure.
Underinflation 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 underinflation 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.TPMS malfunctions may occur for a variety
of reasons, including the installation of
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 malfunc-
tion 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 equipment
(e.g. wireless headsets, two-way radios) in or
near the vehicle could cause the TPMS to
malfunction.

346 Operation
Tires and wheels
Tire inflation pressure warnings
If the system detects a significant loss of
tire inflation pressure in one or more than
one tire, a message appears in the multi-
function display.
Example illustration
In addition, a warning signal sounds.Restarting the TPMS
The TPMS must be restarted 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 and Loading Information
placard on the driver’s door B-pillar
(
page 334) or, if available, the
supplemental tire inflation pressure
information on the inside of the fuel
filler flap (
page 320), make sure the
tire inflation pressure of all four tires is
correct.
Switch on the ignition (page 38).
Press buttonè orÿ on the
multifunction steering wheel repeat-
edly until the standard display menu
appears in the multifunction
display (
page 147).
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 loose control over the vehicle.
iRestart the TPMS after adjusting the tire in-
flation pressure to the inflation pressure recom-
mended for the vehicle operating condition. Tire
pressure should only be adjusted on cold tires.
Observe the recommended tire inflation pres-
sure on the Tire and Loading Information placard
on the driver’s door B-pillar (
page 334). Some
vehicles may have supplemental tire inflation
pressure information for driving at high speeds
(
page 340) or for vehicle loads less than the
maximum loaded vehicle condition
(
page 335). If such information is provided, it
can be found on the inside of the fuel filler flap.

388 Practical hints
What to do if …?
ProblemPossible cause/consequenceSuggested solution
HCombination low tire
pressure/TPMS malfunction
telltale for the TPMS illuminates
continuously.The TPMS detects a loss of pressure in at least
one tire.Carefully bring the vehicle to a
halt, avoiding abrupt steering and
braking maneuvers. Observe the
traffic situation around you.
Read and observe messages in
the multifunction display.
If the tire inflation pressure in the
respective tire(s) has (have) been
corrected, the combination low tire
pressure/TPMS malfunction telltale
goes out after a few minutes of
driving.
HCombination low tire
pressure/TPMS malfunction
telltale for the TPMS flashes
60 seconds and then stays
illuminated.There is a malfunction in the TPMS.Read and observe messages in
the multifunction display.
Have the TPMS checked at an au-
thorized Mercedes-Benz Center.
After the malfunction has been
remedied the combination low tire
pressure/TPMS malfunction telltale
goes out after a few minutes of
driving.

389 Practical hints
What to do if …?
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
Tire and Loading Information placard on the
driver’s door B-pillar (
page 334) or, if
available, the tire inflation pressure label on
the inside of the fuel filler flap (
page 320).
If your vehicle has tires of a different size
than the size indicated on the Tire and
Loading Information placard or the tire
inflation pressure label, you should deter-
mine the proper tire inflation 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 underinflated. 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 underinflated tire causes the tire to over-
heat and can lead to tire failure.
Underinflation 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 underinflation 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.
TPMS malfunctions may occur for a variety
of reasons, including the installation of
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.

401 Practical hints
What to do if …?
Display messagePossible cause/consequencePossible solution
Tire Pressure
Check TiresThe 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 situation around you.
Check and adjust tire inflation pressure as
required (
page 341).
If necessary, change the wheel (page 452).
Restart the Run Flat Indicator after adjusting the
tire inflation pressure values (
page 343).
Tire Pressure
Monitor
InoperativeThe TPMS is malfunctioning.Have the TPMS checked at an authorized
Mercedes-Benz Center.
Tire Pressure
Monitor
Inoperative
No Wheel SensorsThere are wheels without appropriate
wheel sensors mounted (e.g. winter
tires).Have the TPMS checked at an authorized
Mercedes-Benz Center.
Have the wheel sensors installed at an authorized
Mercedes-Benz Center.
Tire Pressure
Monitor
Currently UnavailableThe TPMS is unable to monitor the tire
pressure due to a nearby radio inter-
ference source.As soon as the causes of the malfunction have been
removed, the TPMS automatically becomes active
again after a few minutes of driving.

499 Index
C
California retail buyers and
lessees, Important notice for 11
Call priority (Tele Aid) 300
Can holder see Cup holder
Capacities and
recommended fuels/lubricants 489
Cargo area see Trunk
Cargo tie-down rings 284
Carpets, cleaning 375
Catalytic converter 318
CD changer* 229
MP3 230
CD player 229
Control system 152
Center console 31
Lower part 32
Upper part 31
Central locking
Automatic 118, 166
Locking/unlocking from inside 119
Central locking switch 119
Certification label 478
Certification label, examples 478
Charcoal filter 209Checking tire pressure electronically
Tire Pressure Monitoring System
(TPMS), (USA only) 344
Children in the vehicle 83
Air bags 83
Blocking
rear side window operation 88
Front passenger front
air bag off indicator lamp 76
Infant and
child restraint systems 77, 83, 86
LATCH-type child seat anchors 87
Occupant Classification System
(OCS) 72
Cigarette lighter 290
Climate control
see Climate control system
Climate control system
Air conditioning refrigerant 491
Air conditioning, Cooling 198, 210
Air distribution 194, 205
Air recirculation mode 196, 207
Air vents 199, 212
Air volume 194, 195, 206
Charcoal filter 209Control panel,
Automatic climate control 201
Deactivating/Reactivating 193, 203
Defogging 206
Defrosting 206
Defrosting, rear window 189
Front defroster 195
MAXCOOL 207
Residual engine heat
and ventilation* (REST*) 211
Temperature 194, 204
Clock 29, 140, 160
Setting time 160
Cockpit 26
Cold tire inflation pressure 358
Collapsible wheel chock 422, 424
COMAND* see separate
COMAND operating instructions
Combination switch 55, 133
Control system 141
Functions 143, 145
Multifunction display 141
Multifunction steering wheel 142
Resetting to factory default 155