Page 293 of 400

293 Practical hints
What to do if …
Display symbol
Display message
Possible cause
Possible solution
A
RESERVE FUEL
GO TO GAS STATION!
The fuel level has dropped below the 
reserve mark.
Refuel at the next gas station 
(page 249).
CHECK GAS CAP!
SEE OPERATOR’S MANUAL
The fuel cap is not closed tightly.
Check the fuel cap (
page 249).
Y
HOOD OPEN!
You are driving with the hood open.
Close the hood (
page 252).
I
REMOVE KEY!
You have forgotten to remove the 
SmartKey.
Remove the SmartKey from the starter 
switch.
REPLACE KEY!
DRIVE TO WORKSHOP!
No additional code available for 
SmartKey.
Change the SmartKey.
.
3RD BRAKE LIGHT
CHECK LIGHT!
 
The high mounted brake lamp is 
malfunctioning.
Visit an authorized Mercedes-Benz 
Center as soon as possible.
AUTOM. LIGHT ON
REMOVE KEY!
SmartKey in starter switch position1 
or2.
Remove SmartKey from the starter 
switch.
BRAKE LIGHT
DRIVE TO WORKSHOP!
Brake lamp illumination is delayed or 
lamp is permanently on.
Visit an authorized Mercedes-Benz 
Center as soon as possible.
BRAKE LIGHT, L
CHECK LIGHT!
 
The left brake lamp is malfunctioning.
Visit an authorized Mercedes-Benz 
Center as soon as possible.
BRAKE LIGHT, R
CHECK LIGHT!
 
The right brake lamp is malfunctioning.
Visit an authorized Mercedes-Benz 
Center as soon as possible.
DISPLAY MALFUNCTION
VISIT WORKSHOP!
The display for the lamps or the system is 
malfunctioning.
Visit an authorized Mercedes-Benz 
Center as soon as possible. 
     
        
        Page 312 of 400

312 Practical hintsReplacing bulbsReplacing bulbs for front lamps 
Halogen headlamps
1Bulb socket for turn signal lamp
2Headlamp cover for high beam head-
lamp, parking and standing lamp
3Headlamp cover for low beam head-
lamp4Low beam headlamp bulb
5High beam headlamp bulb
6Bulb socket for parking and standing 
lamp bulb
Low and high beam bulb
Switch off the lights.
Open the hood (
page 252).
Press the clamp and remove headlamp 
cover2 or3.
Pull electrical connector off.
Unclip the retainer springs and take out 
the bulb.
Insert the new bulb so that the base 
locates in the recess on the holder.
Clip the retainer springs and plug the 
connector onto the bulb.
Align headlamp cover2 or3 and 
click into place.
Front turn signal lamp bulb
Switch off the lights.
Open the hood (
page 252).
Twist bulb socket1 counterclockwise 
and pull out.
Push bulb into socket, turn counter-
clockwise and remove.
Insert new bulb in socket, push in and 
twist clockwise.
Reinsert bulb socket in lamp and twist 
clockwise. 
     
        
        Page 313 of 400
313 Practical hints
Replacing bulbs
Parking and standing lamp bulb
Switch off the lights.
Open the hood (
page 252).
Press the clamp and remove headlamp 
cover2.
Pull out bulb socket6 with the bulb.
Pull the bulb out of bulb socket.
Insert a new bulb in the socket.
Reinstall bulb socket.
Align headlamp cover2 and click into 
place.Bi-Xenon* headlamps
1Bulb socket for turn signal lamp
2Headlamp cover for high beam flasher, 
parking and standing lamp
3Cover for Bi-Xenon lamp4High beam flasher bulb
5Bayonet socket for high beam flasher 
bulb
6Bulb socket for parking and standing 
lamp bulb
High beam bulb
Switch off the lights.
Open the hood (
page 252).
Press the clamp and remove lamp 
cover2.
Pull electrical connector4 off.
Warning!
G
Do not remove the cover3 for the 
Bi-Xenon headlamp. Because of high voltage 
in Bi-Xenon lamps, it is dangerous to replace 
the bulb or repair the lamp and its compo-
nents. We recommend that you have such 
work done by a qualified technician.
 
     
        
        Page 314 of 400

314 Practical hintsReplacing bulbs
Twist bayonet socket5 counterclock-
wise to the stop (do not remove).
Pull the bulb out of the socket.
Insert the new bulb so that the base 
locates in the recess in bayonet 
socket5.
Twist bayonet socket clockwise until 
you hear it snap into place.
Plug the connector onto the bulb.
Align lamp cover2 and click into 
place.
Front turn signal lamp bulb
Switch off the lights.
Open the hood (
page 252).
Twist bulb socket1 counterclockwise 
and pull out.
Push bulb into socket, turn counter-
clockwise and remove.
Insert new bulb in socket, push in and 
twist clockwise.
Reinsert bulb socket in lamp and twist 
clockwise.
Parking and standing lamp bulb
Switch off the lights.
Open the hood (
page 252).
Press the clamp and remove headlamp 
cover2.
Pull out bulb socket6 with the bulb.
Pull the bulb out of bulb socket.
Insert a new bulb in the socket.
Reinstall bulb socket.
Align headlamp cover2 and click into 
place.
Side marker lamp bulb
Switch off the lights.
Carefully slide lamp towards rear.
Remove front end first.
Twist bulb socket counterclockwise 
and pull out.
Pull bulb out of the bulb socket.
Insert new bulb in socket.
Reinstall bulb socket, push in and twist 
clockwise.
To reinstall lamp, set rear end in 
bumper and let front end snap into 
place.
 
     
        
        Page 316 of 400

316 Practical hintsReplacing wiper blades
Replacing wiper bladesRemoving wiper blades
Fold the wiper arm forward.
1Lock
2Unlock
Pull the tab in direction of arrow2 and 
remove windshield wiper.
Installing wiper blades
Slide the wiper blade into the cutout on 
the wiper arm.
Slide the tab back in the direction of 
arrow1 until it audibly engages.
Fold the wiper arm backward to rest on 
the windshield. Make sure you hold on 
to the wiper when folding the wiper arm 
back.
Warning!
G
For safety reasons, remove SmartKey from 
starter switch before replacing a wiper 
blade. Otherwise the motor could suddenly 
turn on and cause injury.
!Never open the hood when the wiper 
arms are folded forward.
Hold on to the wiper when folding the 
wiper arm back. If released, the force 
of the impact from the tensioning 
spring could crack the windshield.
Do not allow the wiper arms to contact 
the windshield glass without a wiper 
blade inserted.
Make certain that the wiper blades are 
properly installed. Improperly installed 
wiper blades may cause windshield 
damage.
For your convenience, we recommend 
that you have this work carried out by 
an authorized Mercedes-Benz Center. 
     
        
        Page 324 of 400

324 Practical hintsBattery1Negative terminal
2Positive terminal cover
Disconnecting the battery
Turn off all electrical consumers.
Open the hood (
page 252).
Remove the filter box (
page 323).
Disconnect battery negative lead1.
Remove cover2 from positive 
terminal.
Disconnect the battery positive lead.
Removing the battery
Remove the screw-nuts securing the 
battery.
Remove the battery bracket. 
Take out the battery.
Charging and reinstalling the battery
Charge battery in accordance with the 
instructions of the battery charger 
manufacturer.
Reinstall the charged battery. Follow 
the previously described steps in 
reverse order.
Warning!
G
With a disconnected battery
you will no longer be able to turn the 
SmartKey in the starter switch
the gear selector lever will remain 
locked in positionP
Warning!
G
Never charge a battery while still installed in 
the vehicle. Gases may escape during charg-
ing and cause explosions that may result in 
paint damage, corrosion or personal injury. 
     
        
        Page 376 of 400

376 IndexE
Easy-entry/exit feature* 92
Activating 134
Interrupting movement 92, 134
Electrical fuses 332
Electrical system
Technical data 346
Electronic Stability Program see ESP
Emergency call system* 223
Emergency calls
Initiating an emergency call 226
Telephone* 198
With Tele Aid* 224
Emergency operation 
(Limp Home Mode) 147
Emergency operations
Closing sliding/pop-up roof* 309
Locking the vehicle 306
Opening sliding/pop-up roof* 309
Releasing trunk lid from inside 88
Remote door unlock 230
Unlocking the vehicle 305Emergency Tensioning Device see ETD
Emission control 247
Emission control label 338
Ending
A call (telephone*) 139
Engine
Compartment 252
Starting with 
automatic transmission* 44
Starting with 
manual transmission 43
Starting with the SmartKey
Automatic transmission* 44
Manual transmission 43
Technical data 340
Turning off with the SmartKey 52
Engine cleaning 269
Engine compartment 252
Fuse box in 333
Hood 252
Engine malfunction 
indicator lamp 23, 276Engine number 338, 362
Engine oil 253, 352
Adding 255
Additives 352
Checking level 251, 254
Consumption 253
Display messages 254, 291–292
Filler neck
C 230 Kompressor Sport 256
C 240, C 320, and C 32 AMG 256
Messages in display 254, 291–292
Viscosity 362
Engine oil level
Checking 251, 254
ESP 23, 74, 362
Four wheel electronic 
traction system with ESP 77
Messages in display 282–283
Switching off 75
Switching on 76
Synchronizing 282
Warning lamp 277 
     
        
        Page 380 of 400

380 IndexHood 252
Closing 253
Message in display 293
Opening 252
Hydroplaning 242
I
Identification labels 338
Certification label 338
Vehicle Identification Number 338
Ignition 31
Switching on
Automatic transmission* 44
Manual transmission 43
Immobilizer 78
Activating 78
Deactivating 78
Indicator lamps 
see Lamps, indicator and warningInfant and child restraint systems 63
Installing 68
LATCH-type child seat anchors 69
Information
About service and warranty 10
Button for Tele Aid* 227
Installing
Infant and child restraint systems 68
Ski sack* 212
Towing eye bolt 331
Wiper blades 316
Instrument cluster 22, 109, 363
Cleaning 270
Coolant temperature display 110
Illumination 109
Lamps in 274–278
Multifunction display 113
Outside temperature indicator 111
Selecting language 128
Instrument lighting 109
Instruments and controls see CockpitInterior lighting 107
Activating automatic control 107
Deactivating automatic control 107
Delayed shut-off 132
Manual operation 107
Interior rear view mirror
Adjusting 38
Antiglare 149
Interior storage spaces 216
Armrest 219
Cup holder in front 
of seat armrest 217
Cup holder in rear seat armrest 218
Glove box 216
Parcel net in 
front passenger footwell 220
Storage compartment 
in front of armrest 218
J
Jack 300
Jump starting 326