Page 379 of 474
377 Practical hints
What to do if …?
Display 
Possible cause
Possible solution
TIRE PRES. MONITOR 
REACTIVE AFTER
CORRECTING PRESSURE
There was a tire inflation pressure warning 
message.
The yellow warning lamp for the tire infla-
tion pressure monitor comes on and you 
have not reactivated the system since the 
last tire inflation pressure check. 
Activate the tire inflation pressure monitor 
after correcting the tire inflation pressure val-
ues (
page 307).
TIRE PRES. MONITOR
REACTIVATED
The tire inflation pressure monitor is using 
the current pressure values as the basis for 
monitoring.
Warning!
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. Contin-
ued driving with a flat tire will cause exces-
sive heat build-up and possibly a fire. 
     
        
        Page 380 of 474

378 Practical hintsWhat to do if …?Display 
Possible cause
Possible solution
TIRE PRES. MONITOR
CURRENTLY
UNAVAILABLE
The tire inflation pressure monitor* is un-
able to monitor the tire inflation pressure 
due to:
the presence of several when sensors in 
the vehicle
excessive wheel sensor temperatures
a nearby radio interference source
unrecognized wheel sensors installed
Remove any extra wheel sensors from the ve-
hicle.
As soon as the causes of the malfunction have 
been removed, the tire inflation pressure moni-
tor automatically becomes active again.
TIRE PRES. MONITOR
NOT OPERATIONAL DRIVE TO WORKSHOP
The tire inflation pressure monitor or a 
wheel sensor is malfunctioning.
Have the tire inflation pressure monitor 
checked by an authorized Mercedes-Benz 
Center.
A wheel without proper sensor was in-
stalled.
Have the wheels checked.
Warning!
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. Contin-
ued driving with a flat tire will cause exces-
sive heat build-up and possibly a fire. 
     
        
        Page 384 of 474

382 Practical hintsWhere will I find ...?Spare wheel S 55 AMG and Sport 
Package*
In case of a flat tire, you may temporarily 
use the spare wheel when observing the 
following restrictions:
Do not exceed a vehicle speed of 
50 mph (80 km/h).
Drive to the nearest tire repair facility 
to have the flat tire repaired or re-
placed as appropriate.
Do not operate vehicle with more than 
one spare wheel mounted.For more information, see “Rims and tires” 
(
page 422).
Warning!
G
The dimensions of the spare wheel are dif-
ferent from those of the road wheels. As a 
result, the vehicle handling characteristics 
change when driving with a mounted spare 
wheel. Adapt your driving style accordingly.
Never operate the vehicle with more than 
one spare wheel mounted.
The spare wheel is for temporary use only. 
When driving with spare wheel mounted, en-
sure proper tire inflation pressure and do 
not exceed vehicle speed of 50 mph 
(80 km).
The spare wheel rim is for temporary use 
only. Use for over a total of 12 000 miles 
(20 000 km) (aggregate of all uses) may 
cause wheel rim failure leading to an acci-
dent and possible injuries.
The spare wheel should only be used tempo-
rarily and replaced with a regular road wheel 
as quickly as possible. 
     
        
        Page 400 of 474

398 Practical hintsFlat tirePreparing the vehicle
Park the vehicle as far as possible from 
moving traffic on a hard surface.
Turn on the hazard warning flashers.
Turn the steering wheel so that the 
front wheels are in a straight ahead 
position.
Set the parking brake.
Move the gear selector lever toP.
Vehicles with SmartKey:
Turn off the engine (
page 57).
Remove the SmartKey from the starter 
switch.Vehicles with SmartKey with 
KEYLESS-GO*:
Turn off the engine by pressing the 
KEYLESS-GO* button on the gear se-
lector lever once (
page 57).
Open the driver’s door (this puts the 
starter switch in position0, same as 
with the SmartKey removed from the 
starter switch). The driver’s door then 
can be closed again.
Have any passenger exit the vehicle at 
a safe distance from the roadway.
Mounting the spare wheel
iOpen the door only when conditions 
are safe to do so.
Warning!
G
Never operate the vehicle with more than 
one spare wheel mounted.
The spare wheel rim is for temporary use 
only. Use for over a total of 12 000 miles 
(20 000 km) (aggregate of all uses) may 
cause wheel rim failure leading to an acci-
dent and possible injuries.
The spare wheel should only be used tempo-
rarily and replaced with a regular road wheel 
as quickly as possible.
S55AMG and Sport Package* only:
The spare wheel is for temporary use only. 
When driving with spare wheel mounted, en-
sure proper tire inflation pressure and do 
not exceed vehicle speed of 50 mph 
(80 km/h). 
     
        
        Page 404 of 474

402 Practical hintsFlat tireLowering the vehicle
Lower vehicle by turning crank coun-
terclockwise until vehicle is resting ful-
ly on its own weight.
Remove the jack.
1 - 5 Wheel bolts
Tighten the five wheel bolts evenly, fol-
lowing the diagonal sequence illustrat-
ed (1 to 5), until all bolts are tight. 
Observe a tightening torque of 
110 lb-ft (150 Nm).
Before storing the jack in the trunk, it 
should be fully collapsed, with handle 
folded in.
Place the wheel bolt wrench, alignment 
bolt and jack back in the vehicle tool kit 
in the trunk and close the covering lid.Replacing jack support tube cover
Slide tongue of cover under the upper 
edge of the tube opening.
Applying even pressure, press cover 
until it snaps into place. Be careful not 
to damage the locking tabs or clamp 
the plastic retaining strap.
Warning!
G
Have the tightening torque checked after 
changing a wheel. The wheels could come 
loose if they are not tightened to a torque of 
110 lb-ft (150 Nm).
!You can also screw the faulty wheel 
down into the spare wheel well in the 
trunk. 
Do not activate the tire inflation pres-
sure monitor* until the depressurized 
tire is no longer in the vehicle. 
     
        
        Page 424 of 474

422 Technical dataRims and tiresUse only tires and rims which have been 
specifically developed for your vehicle and 
tested and approved by Mercedes-Benz. 
Other tires and rims can have detrimental 
effects, such as:
Poor handling characteristics
Increased noise
Increased fuel consumption
!Moreover, tires and rims not approved 
by Mercedes-Benz may, under load, ex-
hibit dimensional variations and differ-
ent tire deformation characteristics 
that could cause them to come into 
contact with the vehicle body or axle 
parts. Damage to the tires or the vehi-
cle may be the result.
iFurther information on tires and rims is 
available at any authorized 
Mercedes-Benz Center. A placard with 
the recommended tire inflation pres-
sures is located on the driver's door 
B-pillar. Some vehicles may have sup-
plemental tire pressure information for 
driving at high speeds (
page 306) or 
for vehicle loads less than the maxi-
mum loaded vehicle condition. If such 
information is provided, it can be found 
on the placard located on the inside of 
the fuel filler flap. The tire pressure 
should be checked regularly and 
should only be adjusted on cold tires. 
Follow tire manufacturer’s mainte-
nance recommendation included with 
vehicle. 
     
        
        Page 446 of 474

444 Index
Seat cushion tilt 38
Seat fore and aft adjustment 38
Seat height 38
Seat in the lumbar region 123
Seat in the shoulder region 123
Seats 37
Steering column height 40
Steering column in or out 40
Steering column up or down 40
Steering wheel 40
ADS 229, 437
Air bags 61
BabySmart
TM air bag deactivation 
system 73, 437
Children 62
Front 65
Passenger 65
Safety guidelines 64
Side impact 65
Window curtain 66
Air bag off indicator lamp 346Air conditioning
Turning off 202
Turning on 202
Air pressure 322
Air pressure see Tire inflation pressure
Air recirculation mode 199
Activating 199
Deactivating 200
Air vents, rear passenger compartment
Adjustable 204
Air volume
Adjusting 198
AIRMATIC 229
Airmatic 229, 437
Alarm
Audible 79, 88
Canceling 88
Visual 87Alarm system
Anti-theft 87
Anti-theft alarm system indicator 
lamp 27
Alignment bolt (vehicle tool kit) 380, 
401, 437
Antiglare
Automatic 186
Antilock brake system (ABS) 437
Antilock Brake System see ABS 25
Anti-theft alarm system
Arming 87
Canceling alarm 88
Disarming 88
Anti-theft systems 86
Anti-theft alarm system 87
Anti-theft alarm system indicator 
lamp 27
Immobilizer 86
Tow-away alarm 89
Aquaplaning see Hydroplaning 277 
     
        
        Page 449 of 474

447 Index
Centigrade (°C)
Setting temperature units 163
Central locking
Automatic 112
From inside 113
Switch 113
Switching on/off (control 
system) 168
Unlocking from inside 113
Change of address or ownership 12
Changing
CDs 151
SmartKey setting 169
Vehicle level 230, 233
Charcoal filter 200
Activating 200
Deactivating 201
Charging
Vehicle battery 404Checking
Brake fluid 284
Coolant level 292
Oil level 285, 287
Oil level via control system 288
Tire inflate pressure 285
Vehicle lighting 285
Child safety 71
Air bags 62
Infant and child restraint systems 66, 
71
LATCH child seat anchors 76
Cigarette lighter 252
Cleaning
Cup holder 335
Distronic* system sensor cover 333
Gear selector lever 335Hard plastic trim items 335
Headlamps 186
Headliner and shelf below rear 
window 335
Instrument cluster 335
Leather upholstery 336
Light alloy wheels 335
Nubuck leather upholstery 336
Parktronic* system sensor 333
Plastic and rubber parts 336
Seat belts 335
Steering wheel 335
Upholstery 336
Windows 334
Windshield 53
Wiper blades 333
Wood trims 336
Cleaning tires 298