Page 321 of 474

320 Operation
Tires and wheels
Press reset buttonJ (page 118).
The following message will appear in 
the multifunction display:
Restart tire
pressure monitor?
Press button æ.
The following message will appear in 
the multifunction display:
Tire Pressure Monitor
Restarted
After driving a few minutes the current 
tire inflation pressure values are 
accepted as reference pressures and 
then monitored.
If you wish to cancel activation:
Press button ç.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
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. 
 
     
        
        Page 339 of 474

338 Operation
Maintenance
Clearing the maintenance service 
indicator message
The maintenance service indicator 
message is automatically cleared:
after approximately 10 seconds when 
you switch on the ignition or when 
reaching the service threshold while 
driving
after approximately 30 seconds once 
the suggested maintenance service 
term has passed
You can also clear it yourself.
Press reset buttonJ(page 26) on 
the instrument cluster.
The maintenance service indicator 
message is cleared and the standard 
display appears in the multifunction 
display (
page 127).
Maintenance service term exceeded
If you have exceeded the suggested main-
tenance service term, you will see the fol-
lowing message in the multifunction 
display:
Service A Exceeded By XXXXX Miles (Km)
Service A Exceeded By XXX Days
Service A Exceeded By X Day
In addition, a signal sounds when the 
message appears.
Any authorized Mercedes-Benz Center will 
reset the maintenance service indicator 
following a completed maintenance 
service.Calling up the maintenance service 
indicator display
You can call up the maintenance service in-
dicator display at any time to check when 
the next maintenance service is due.
Switch on the ignition (page 37).
The standard display menu appears in 
the multifunction display (
page 127).
Press buttonjork on the mul-
tifunction steering wheel repeatedly 
until the maintenance service indicator 
display with the service symbol 9 
appears in the multifunction display.
iThe menu overview can be found on 
(
page 124). 
     
        
        Page 340 of 474

339 Operation
Maintenance
Resetting the maintenance service 
indicator 
In the event that the maintenance service 
on your vehicle is not carried out by an 
authorized Mercedes-Benz Center, you can 
have the maintenance service indicator 
reset. The automotive maintenance facility 
carrying out the maintenance service will 
find the information for resetting the main-
tenance service indicator in the mainte-
nance-relevant literature for your vehicle. 
Such literature is available from any autho-
rized Mercedes-Benz Center or directly 
from Mercedes-Benz.iIf the battery is disconnected, the days of 
disconnection will not be included in the count 
shown by the maintenance service indicator. To 
arrive at the true maintenance service deadline, 
you will need to subtract these days from the 
days shown in the maintenance service indicator 
message or maintenance service indicator dis-
play.
Do not confuse the maintenance service indica-
tor with the engine oil level indicatorN.
iIf the maintenance service indicator was 
inadvertently reset, have an authorized 
Mercedes-Benz Center correct it.
Only reset if the proper maintenance service has 
been performed. Resetting the system without 
performing the proper maintenance service as 
called for by the maintenance service indicator 
will result in engine damage and/or other vehicle 
damage not covered by the Mercedes-Benz 
Limited Warranty. 
     
        
        Page 356 of 474

355 Practical hints
What to do if …
ProblemPossible cause/consequenceSuggested solution
4The yellow fuel reserve warning lamp 
flashes after starting the engine.The fuel cap is not closed properly.Close the fuel cap.
The yellow fuel reserve warning lamp 
comes on when the engine is 
running.
Additionally you see the message 
Reserve Fuel in the multifunction 
display.
The fuel level has gone below the 
reserve mark.Refuel at the next gas station (page 291).
After refueling you will see the message 
1 Message in the multifunction display.
Press reset buttonJto confirm the 
message (
page 26).
1The red SRS indicator lamp comes 
on when the engine is running.There is a malfunction in the 
restraint systems. The air bags or 
emergency tensioning devices 
(ETDs) could deploy unexpectedly or 
fail to deploy in an accident.Drive with added caution to the nearest 
authorized Mercedes-Benz Center.
Warning!G
In the event a malfunction of the SRS is 
indicated as outlined above, the SRS may 
not be operational. For your safety, we 
strongly recommend that you contact an 
authorized Mercedes-Benz Center 
immediately to have the system checked;
otherwise the SRS may not be deployed 
when needed in an accident, which could 
result in serious or fatal injury, or it might 
deploy unexpectedly and unnecessarily 
which could also result in an accident 
and/or injury to you or to others. 
     
        
        Page 361 of 474

360 Practical hints
What to do if …
Vehicle status messages in the 
multifunction display
Warning and malfunction messages 
appear in the multifunction display located 
in the instrument cluster.
Certain warning and malfunction messag-
es are accompanied by an audible signal.
Address these messages accordingly and 
follow the additional instructions given in 
this Operator’s Manual.
Selecting the vehicle status message 
memory menu in the control system 
(
page 135) displays both cleared and 
uncleared messages.
High-priority messages appear in the 
multifunction display in red color.Certain messages of high priority cannot 
be cleared from the multifunction display 
using the reset buttonJ(
page 26) or 
buttonj, k, ·, orè on the 
multifunction steering wheel.
Other high-priority messages and 
messages of less immediate priority 
(regular display colors) can be cleared 
from the multifunction display using the 
reset buttonJ(
page 26) or 
buttonj, k, ·, orè on the 
multifunction steering wheel. They are 
then stored in the vehicle status message 
memory (
page 135). Remember that 
clearing a message will only make the mes-
sage disappear. Clearing a message will 
not correct the condition that caused the 
message to appear.
Warning!G
All categories of messages contain impor-
tant information which should be taken note 
of and, where a malfunction is indicated, 
addressed as soon as possible at an autho-
rized Mercedes-Benz Center.
Failure to repair condition noted may cause 
damage not covered by the Mercedes-Benz 
Limited Warranty, or result in property dam-
age or personal injury. 
     
        
        Page 469 of 474

468 Index
R
RACETIMER see Control system menus, 
AMG
Radio
Operation (Audio system) 199
Operation (Control system) 133
Satellite* 134
Radio transmitters, control and 
operation 287
Reading lamps 117
Rear view mirrors see Mirrors
Rear window defroster 170
Recommended inflation pressure 332
Recovery services for stolen vehicle (Tele 
Aid*) 269
Refrigerant (Air conditioning) 453
Refueling 291
Regular checks 292
Remote control see SmartKey
Remote door unlock with Tele Aid* 269
Reporting, safety defects 18
Research Octane Number see RON
Reset button (Instrument cluster) 27
Residual engine heat utilization see RESTREST
Automatic climate control* 192
Climate control 181
Restraint systems
Emergency Tensioning Device 
(ETD) 79
Seat belts 64, 76
Retractable hardtop 240
Locking after raising/lowering 242
Opening and closing 240
Operating manually 397
Problems when operating 242, 246
Summer opening/convenience 
closing* 244
Wind screen* 246
Reverse gear position
Automatic transmission* 155, 157
Manual transmission 154
Rims 332, 442
Roadside Assistance 12, 266
RON 292, 455
Roof rack 252
Rubber parts, cleaning 345
Run Flat Indicator* 315S
Safety belts see Seat belts
Safety defects, reporting 18
Safety, occupant 64
Satellite radio* 134
Seat belt force limiter 79
Seat belts 64, 76
Cleaning 346
Fastening 48
Proper use of 50
Release button 49
Safety guidelines 68
Warning lamp 353–354
Seating capacity 308
Seats 104
Adjusting 39
Easy-entry/exit feature* 44
Head restraint height 42
Heating* 104
Power seats* 41