
3 ContentsStorage compartments 
and armrests  .............................. 196
Glove box  ..................................... 197
Cup holder  ......................................202
Ashtrays ..........................................204
Lighter .............................................206
Parcel net in front 
passenger footwell  ....................208
Parcel net in trunk  ........................208
Telephone, general  ........................209
Garage door opener  ....................... 210
Infrared reflecting 
windshield ................................. 214
DrivingControl and operation of 
radio transmitters  ..................... 216
The first 1 000 miles 
(1 500 km)  ................................. 217
Maintenance ................................... 217
Tele Aid  ........................................... 218
Catalytic converter  ........................228Emission control ............................ 229
Starter switch  ................................. 230
Starter switch – 
KEYLESS-GO ............................. 232
Starting and turning off 
the engine  .................................. 235
Automatic transmission  ............... 237
Parking brake  ................................ 246
Driving instructions ...................... 247
Drive sensibly – 
Save Fuel  ..................................... 247
Drinking and driving  ................ 247
Pedals .......................................... 247
Power assistance ........................ 248
Brakes .......................................... 248
Driving off ................................... 249
Parking ........................................ 250
Tires ............................................. 251
Snow chains  ............................... 253
Winter driving instructions  ..... 254
Block heater ................................ 255
Deep water  .................................. 256Passenger compartment  ...........256
Traveling abroad  ........................257
Cruise control  .................................258
Distronic (DTR)  .............................. 261
Brake assist system 
(BAS) ...........................................277
Antilock brake system 
(ABS) ...........................................278
Electronic stability program 
(ESP) ...........................................280
Active body control 
(ABC) ..........................................284
Level control system for vehicles 
with Airmatic system  ...............285
Level control system for vehicles 
with Active Body Control 
(ABC) ..........................................286
Adaptive damping system 
(ADS) ...........................................289
Parking assist (Parktronic)  .......... 291
What you should know 
at the gas station  .......................296
Check regularly and 
before a long trip  ......................299 

4 Contents
Instrument cluster displayMalfunction and indicator 
lamps in the 
instrument cluster  ....................302
On-board diagnostic 
system ..........................................302
Check engine malfunction 
indicator lamp .............................302
Brake warning lamp  ..................304
Supplemental restraint system 
(SRS) indicator lamp ..................305
Fuel reserve warning .................305
ABS malfunction 
indicator lamp .............................306
Electronic stability program 
(ESP) — warning lamp  ...............307
Distronic (DTR) – 
warning lamp  ..............................307
Seat belt nonusage 
warning lamp  ..............................308
Malfunction and indicator 
lamp in the 
center console  ...........................308
AIRBAG OFF indicator lamp .....308Malfunction and warning 
messages in the 
multifunction display  .............. 309
DISPLAY DEFECTIVE ................. 310
BATTERY/ALTERNATOR ........... 311
ENTRANCE POSITION  ...............312
BRAKE ASSIST ............................312
BRAKE LINING WEAR ............... 313
BRAKE FLUID  ............................. 313
PARKING BRAKE ........................ 314
TRUNK OPEN  .............................. 314
ELEC. STABIL. PROG. 
(Electronic stability 
program) ...................................... 315
COOLANT 
(coolant level)  .............................. 316
COOLANT 
(coolant temperature)  ................ 317
LIGHTING SYSTEM  .................... 318
LIGHT SENSOR  .......................... 320
ACTIVE BODY CONTROL 
(ABC) ........................................... 320
TIRE PRESSURE  ........................ 322
ENGINE OIL LEVEL  ................... 324CRUISE CONTROL  .....................325
KEY ...............................................325
DOOR ...........................................326
HOOD ...........................................326
TELE AID  .....................................327
CHIP-CARD 
(KEYLESS-GO) ............................328
SELECTOR LEVER ......................329
TELEPHONE – FUNCTION  .......329
WASHER FLUID  .........................330
AIR SPRING (AirMatic)  ............. 331
DISTRONIC (DTR)  ......................332
AIR CLEANER .............................333
Practical hintsFirst aid kit  .....................................336
Stowing things in the vehicle  ......336
Fuses ................................................337
Hood .................................................339
Checking engine oil level  .............342
Automatic transmission 
fluid level  ...................................343
Active body control (ABC) 
fluid level  ...................................343 

30 Central locking system
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
KEYLESS-GO-card
The KEYLESS-GO-card (1) does not have a removable 
mechanical key.
The functions of the KEYLESS-GO-card (1) are identical 
to those of the electronic key. Carrying the card with 
you permits the use of the vehicle.The validity of the KEYLESS-GO-card is checked every 
time when grasping a door handle or pushing the trunk 
lid release. Once the KEYLESS-GO-card is recognized 
outside the vehicle, the doors, trunk lid and fuel filler 
flap are unlocked, depending on the selected mode 
(global or selective unlocking mode, see page 41).
Starter switch KEYLESS-GO, see page 230.
Starting and turning off the engine with KEYLESS-GO, 
see page 236 and page 236.
Note:
In the case of a malfunction in the KEYLESS-GO-system, 
we recommend that you carry the electronic key plus 
mechanical key with you and keep them in a safe place 
so that they are always handy. Never leave the electronic 
key or a KEYLESS-GO-card in the vehicle.
Obtaining replacement keys
Your vehicle is equipped with a theft deterrent locking 
system requiring a special key manufacturing process. 
For security reasons, replacement keys can only be 
obtained from your authorized Mercedes-Benz Center.
P80.30-2029-26
1 

32 Central locking system
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
General notes on the central locking system
If the electronic key is inserted in the starter switch, the 
vehicle cannot be locked or unlocked with the remote 
control.
If the vehicle cannot be locked or unlocked:
•Aim transmitter eye at a receiver on either front 
door handle. Check the batteries of the electronic 
key, see page 371, or synchronize the remote 
control, see page 373.
•Use the mechanical key to unlock the vehicle. To 
start engine, insert the electronic key in the starter 
switch. There could be a slight delay until the 
electronic key can be turned in the starter switch.
•Vehicles with KEYLESS-GO only:
A KEYLESS-GO-card must be recognized by the 
system as being outside the vehicle to enable the 
vehicle to be locked or unlocked (maximum distance 
between card and doors or trunk is approx. 3 ft. 
(1 m). Check the location of the KEYLESS-GO-card, 
see page 36. Check the batteries of the KEYLESS-
GO-card, see page 374. The trunk lid will open 
automatically if a KEYLESS-GO card is detected in 
the trunk, see page 36.Note:
If neither the remote control nor KEYLESS-GO system 
functions, use the mechanical key to unlock or lock the 
vehicle. To start engine, insert the electronic key in the 
starter switch. There could be a slight delay until the 
electronic key can be turned in the starter switch.
Important!
When unlocking the driver’s door with the mechanical 
key, the exterior lamps will flash and the alarm will 
sound.
To cancel the alarm, insert the electronic key in the 
starter switch, or press buttonŒ or‹ on the 
electronic key; or with the optional KEYLESS-GO-
system, when carrying a KEYLESS-GO-card, by grasping 
a door handle or pressing the start- / stop button on the 
gear selector lever. 

156 Engine oil level indicator
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Engine oil level indicator
To check the engine oil level, park vehicle on level 
ground, with engine at normal operational temperature.
Check oil level approximately 5 minutes after turning 
off the engine, allowing for the oil to return to the oil 
pan.
The message “OBSERVE WAITING PERIOD” will be 
displayed if the required waiting period has not been 
observed after turning off the engine:
•with engine at operational temperature 
approximately 5 minutes.•with engine not at operational temperature up to 
approximately 30 minutes.
The engine oil level check can be repeated after a short 
time.
Turn the electronic key in starter switch to position 2.
To call up the trip odometer and main odometer, press 
button è or ÿ on the multifunction steering 
wheel until the display appears. See page 122. 
Press button j or k on the multifunction 
steering wheel repeatedly until the “CORRECT 
MEASUREMENT ONLY IF VEHICLE LEVEL” engine oil 
level indicator appears. This indicator is only a 
reminder. Measurement can be cancelled by pressing 
button j or k if the vehicle is not parked on level 
ground. An incorrect reading will be recorded if you do 
not cancel the measurement. Move the vehicle to level 
ground and measure again.
The electronic key in starter switch is not in position 2 if 
the “ENGINE OIL LEVEL – IGNITION ON PLEASE!” 
message appears.
The “ENGINE OIL LEVEL – MEASUREMENT IN 
PROCESS” message is displayed after approximately 
3seconds.
MEASUREMENT CORRECT 

157 Engine oil level indicator
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index One of the following messages will subsequently appear 
on the indicator:
“ENGINE OIL LEVEL – O.K.”
No oil needs to be added.
“ENGINE OIL LEVEL – ADD 1.0 QUART”
(Canada: 1.0 L)
“ENGINE OIL LEVEL – ADD 1.5 QUART”
(Canada: 1.5 L)
“ENGINE OIL LEVEL – ADD 2.0 QUART”
(Canada: 2.0 L)
See “Checking engine oil level”, on page 342 for 
instructions on adding engine oil.
“ENGINE OIL LEVEL – REDUCE OIL LEVEL”
Do not overfill the engine.
Excessive oil must be siphoned or drained off. It could 
cause damage to the engine and catalytic converter not 
covered by the Mercedes-Benz Limited Warranty.
The “MEASURING NOT POSSIBLE!” message will be 
displayed if a proper oil level check cannot be 
performed. The engine oil level check can be repeated 
after a short while.S 430, S 500 and S 55 AMG only:
Perform the engine oil level check with the dipstick, if it 
cannot be completed via the multifunction display.
See “Checking engine oil level”, page 342.
In this case we recommend that you have the system 
checked at a Mercedes-Benz Center.
Notes:
See malfunction and warning messages on page 309 
and page 324 if an engine oil level indicator appears in 
the multifunction display when the engine is running.
The engine oil level cannot be checked while the engine 
is running. The “ENGINE OIL LEVEL – NOT WHEN 
ENGINE ON” message will appear.
Engine oil consumption
Engine oil consumption checks should only be made 
after the break-in period. During the break-in period, 
higher oil consumption may be noticed and is normal. 
Frequent driving at high engine speeds results in 
increased consumption. 

169 Automatic climate control
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Automatic climate control
The system is always at operational readiness, except 
when manually switched off.
The automatic climate control only operates with the 
engine running.
The temperature selector should be left at the desired 
temperature setting. The temperature selected is 
reached as quickly as possible.
The system will not heat or cool any quicker by setting a 
higher or lower temperature.
The desired interior temperature and air distribution 
can be selected separately for the left and right side of 
the passenger compartment. Adjust the temperature 
settings in small increments.
The automatic climate control removes considerable 
moisture from the air during operation in the cooling 
mode. It is normal for water to drip on the ground 
through ducts in the underbody.
The air conditioning will not engage (no cooling) if the 
economy mode AC
OFF
 is selected, see page 176. Notes:
The current settings (Temperature, Air volume, AC
OFF, 
Activated charcoal filter, ON / OFF) are stored for each 
electronic key before the electronic key is removed from 
the starter switch or when the vehicle is locked using 
the KEYLESS-GO-card (vehicles with keyless-go), see 
key dependent memory settings on page 111.
Do not obstruct the air flow by placing objects on the air 
flow-through exhaust slots below the rear window.
Also keep the air intake grill in front of the windshield 
free of snow and debris.
The storage compartment between the front seats can be 
ventilated. See page 178 for notes on ventilating the 
storage space under the armrest in the center console.
The air conditioner switches itself off for its own 
protection if refrigerant is lost. No cooling will then take 
place. Economy mode AC
OFF
 cannot be switched off. 
Have the air conditioner checked by a Mercedes-Benz 
Center should this happen.
If the vehicle interior has been heated by direct sunlight 
and is very hot, ventilate the interior (open door or 
windows for a short period) before driving off.  

215 Contents – Driving
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
DrivingControl and operation of 
radio transmitters  ..................... 216
The first 1 000 miles 
(1 500 km)  ................................. 217
Maintenance ................................... 217
Tele Aid  ........................................... 218
Catalytic converter  ........................228
Emission control  ............................229
Starter switch  .................................230
Starter switch – 
KEYLESS-GO ..............................232
Starting and turning off 
the engine  ..................................235
Automatic transmission  ...............237
Parking brake  .................................246
Driving instructions  ......................247
Drive sensibly – 
Save Fuel  .....................................247
Drinking and driving .................247Pedals .......................................... 247
Power assistance ........................ 248
Brakes .......................................... 248
Driving off ................................... 249
Parking ........................................ 250
Tires ............................................. 251
Snow chains  ............................... 253
Winter driving instructions  ..... 254
Block heater ................................ 255
Deep water  .................................. 256
Passenger compartment  ........... 256
Traveling abroad  ........................ 257
Cruise control  ................................ 258
Distronic (DTR)  .............................. 261
Brake assist system 
(BAS) .......................................... 277
Antilock brake system 
(ABS) .......................................... 278
Electronic stability program 
(ESP) ........................................... 280Active body control 
(ABC) ..........................................284
Level control system for vehicles 
with Airmatic system  ...............285
Level control system for vehicles 
with Active Body Control 
(ABC) ..........................................286
Adaptive damping system 
(ADS) ...........................................289
Parking assist (Parktronic)  .......... 291
What you should know 
at the gas station  .......................296
Check regularly and 
before a long trip  ......................299