Page 325 of 430
322 Malfunction and warning messages
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
TIRE PRESSURE
* C = Category, see page 309.
LR: left rear; LF: left front
RR: right rear; RF: right front Line 1 Line 2 C*
TIRE PRESSURE CAUTION, TIRE DEFECT!
1
1
TIRE PRESSURE CHECK TIRES!
2, 3
1
TIRE PRESSURE CHECK TIRES!
4
2
TIRE PRESS. MONITOR
ACTIVATEDPRESS. DISPLAY AFTER
DRIVING A FEW MINS.
3
2
REACTIVATE TIRE PRESS. MONITOR!
3, 5
3
TIRE PRESS. MONITOR CURRENTLY INACTIVE
6
2
TIRE PRESS. MONITOR VISIT WORKSHOP!
7
2
TIRE PRESSURE, LF CAUTION, TIRE DEFECT!
1
1
TIRE PRESSURE, RF CAUTION, TIRE DEFECT!
1
1
TIRE PRESSURE, LR CAUTION, TIRE DEFECT!
1
1
TIRE PRESSURE, RR CAUTION, TIRE DEFECT!
1
1
TIRE PRESSURE, LF CHECK TIRES!
2
1
TIRE PRESSURE, RF CHECK TIRES!
2
1
TIRE PRESSURE, LR CHECK TIRES!
2
1
TIRE PRESSURE, RR CHECK TIRES!
2
1 Line 1 Line 2 C*
Page 326 of 430

323 Malfunction and warning messages
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
1 One or more tires is or has deflated rapidly. Carefully bring the
vehicle to a halt, avoiding abrupt steering and braking maneuvers.
For reference on changing wheels, see page 348.
2 The tire pressure on one or more tires is already below minimum
value. Carefully bring the vehicle to a halt, avoiding abrupt
steering and braking maneuvers. For reference on changing
wheels, see page 351.
3 For tire inflation pressure monitor, see page 152.4 Tire pressure in one or more tires is low. Check and correct tire
pressure according to the label affixed inside the fuel filler flap.
For tire inflation pressure, see page 356.
The tire inf lation pressure monitor must be activated again after
the tire inflation pressure has been corrected, see page 152.
5 When the message appears after starting the engine, the tire
inflation pressure on all road wheels should be checked and
corrected according to the label affixed inside the fuel filler flap.
For tire inflation pressure, see page 356.
The tire inf lation pressure monitor must be activated again after
the tire inflation pressure has been corrected, see page 152.
6 The tire inflation pressure monitor system is unable to monitor the
tire pressure due to the presence of several wheel electronics in
the vehicle (e.g. a deflated road wheel in the trunk), or nearby
radio interference source, or excessive wheel sensor temperatures,
or unrecognized wheel sensors mounted.
7 The tire inflation pressure monitor is defective or a wheel without
proper sensor was installed. Visit your authorized Mercedes-Benz
Center.Wa r n i n g !
Do not drive with a flat tire. A flat tire affects the
ability to steer or brake the vehicle. You may lose
control of the vehicle. Continued driving with a flat
tire will cause excessive heat build-up and possibly
a fire.
Page 327 of 430

324 Malfunction and warning messages
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
ENGINE OIL LEVEL
* C = Category, see page 309.
1 The engine oil level must be checked immediately. See Engine oil
level indicator on page 156.
2 There is no oil in the engine. There is a danger of engine damage.3 There is a risk of damaging the engine or catalytic converter. The
engine oil level must be checked immediately. See Engine oil level
indicator on page 156.
4 The engine oil level has dropped to a critical level.
Check the engine oil level immediately. See Engine oil level
indicator on page 156 and check the engine for visible leakage
(loss of oil).
Possibility of water in the engine oil. Have the engine oil checked.
5 The measuring system is malfunctioning.
When the “ENGINE OIL LEVEL – CHECK LEVEL!”
message appears while the engine is running and at
operating temperature, the engine oil level has dropped
to approximately the minimum mark on the dipstick.
When this occurs, the warning will first come on
intermittently and then stay on if the oil level drops
further.
If no oil leaks are noted, continue to drive to the nearest
service station where the engine oil should be topped to
the “full” mark on the dipstick with an approved oil.
The engine oil level warnings should not be ignored.
Extended driving with the symbol displayed could
result in serious engine damage that is not covered by
the Mercedes-Benz Limited Warranty.
Line 1 Line 2 C*
ENGINE OIL LEVEL CHECK LEVEL!
1
2
ENGINE OIL LEVEL STOP, ENGINE OFF!
2
1
ENGINE OIL LEVEL REDUCE OIL LEVEL
3
2
ENGINE OIL VISIT WORKSHOP!
4
2
ENGINE OIL LEVEL VISIT WORKSHOP!
5
2
Page 328 of 430
325 Malfunction and warning messages
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index CRUISE CONTROL
* C = Category, see page 309.
1 Cruise control is malfunctioning.
KEY* C = Category, see page 309.
1 Key needs possibly to be replaced. Line 1 Line 2 C*
CRUISE CONTROL VISIT WORKSHOP!
1
2
Line 1 Line 2 C*
REPLACE KEY
1
VISIT WORKSHOP! 2
AUTOM. LIGHT ON REMOVE KEY! 1
P54.30-2245-21
Page 329 of 430
326 Malfunction and warning messages
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
DOOR
* C = Category, see page 309.
HOOD* C = Category, see page 309.See page 339 for hood.
Line 1 Line 2 C*
DOOR OPEN! 1
Line 1 Line 2 C*
HOOD OPEN! 2
Page 330 of 430
327 Malfunction and warning messages
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index TELE AID
* C = Category, see page 309.1 The Tele Aid system consists of three types of response; automatic
and manual emergency, roadside assistance and information. With
this message displayed, one or more functions may not be
avai lable.
See page 218 for notes on the Tele Aid.
If a malfunction is indicated as outlined above, have the
system checked at the nearest Mercedes-Benz Center as
soon as possible.
Line 1 Line 2 C*
TELE AID VISIT WORKSHOP!
1
1
Page 331 of 430

328 Malfunction and warning messages
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
CHIP-CARD (KEYLESS-GO)
* C = Category, see page 309.1 Check battery of KEYLESS-GO-card, see page 374.
2 The KEYLESS-GO-card cannot be recognized by the running
engine (e.g. strong radio-frequency interference) or the card is not
in the vehicle.
Stop immediately and search for the KEYLESS-GO-card or continue
to operate the vehicle with the electronic key, otherwise the vehicle
cannot be centrally locked or the engine started again after the
engine stops automatically. See page 36.
3 The KEYLESS-GO-card was momentarily not recognized. If
message repeats, place card in a different position or continue to
operate the vehicle with the electronic key, see page 36.
4 A KEYLESS-GO-card left inside the vehicle has been recognized
while locking the vehicle from the outside, see page 36.
5 The message appears for maximum of 60 seconds each time the
driver’s door is opened, as long as no electronic key is in the
starter switch. The message appears regardless of the past
operation method (electronic key or KEYLESS-GO-card), see
page 36. Line 1 Line 2 C*
CHIP CARD CHECK BATTERY
1
2
CHIP CARD NOT RECOGNIZED!
2
1
CHIP CARD NOT RECOGNIZED!
3
2
CHIP CARD STILL IN VEHICLE
4
1
CHIP CARD DO NOT FORGET!
5
1
Page 332 of 430
329 Malfunction and warning messages
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index SELECTOR LEVER
(Vehicles with KEYLESS-GO only)
Place selector lever in position “P”.
The message appears when attempting to turn off the
engine while the selector lever is in any other position
than “P”, see page 236.TELEPHONE – FUNCTION
* C = Category, see page 309.The display appears if button í or ì on the
multifunction steering wheel is pressed and the vehicle
is not equipped with a telephone.Line 1 Line 2 C*
FUNCTION NOT AVAILABLE! 3