GWARNING
If you open the hood when the drive system
has overheated or during a fire in the engine
compartment, you could come into contact
with hot gases or other escaping operating
fluids. There is a risk of burns.
Let the overheated components cool down
before opening the hood. In the event of a
fire in the engine compartment, keep the
hood closed and call the fire service.
GWARNING
Windshield washer concentrate is highly
flammable. If windshield washer concentrate
gets onto hot components of the engine or
the exhaust system, it can ignite. There is a
risk of fire and injury.
Make sure that windshield washer concen-
trate is not spilled in the vicinity of the filler
neck.
XTo open:pull cap Cupwards by the tab.
XAdd the premixed washer fluid.
XTo close:press cap Conto the filler neckuntil it engages.
If the washer fluid level drops below the rec-ommended minimum of 1 liter, a messageappears in the multifunction display promptingyou to add washer fluid (Ypage 228).
Further information on windshield washerfluid/antifreeze (Ypage 338).
ASSYST PLUS
Service message
The ASSYST PLUS service interval displayinforms you of the next service due date.
You can find information on the type of serviceand service intervals in the Maintenance Book-let.
You can obtain further information from anauthorized Mercedes-Benz Center or athttp://www.mbusa.com (USA only).
iThe ASSYST PLUS service interval displaydoes not show any information on theengine oil level. Observe the notes on theengine oil level (Ypage 274).
The multifunction display shows a servicemessage for several seconds, e.g.:
RService A in .. daysService A in .. days
RService A dueService A due
RService A overdue by .. daysService A overdue by .. days
Depending on the operating conditions of thevehicle, the remaining time or distance untilthe next service due date is displayed.
The letterAAorBB, possibly in connection with anumber or another letter, indicates the type ofservice.AAstands for a minor service andBBfora major service.
You can obtain further information from anauthorized Mercedes-Benz Center.
The ASSYST PLUS service interval display doesnot take into account any periods of time dur-ing which the battery is disconnected.
Maintaining the time-dependent service sched-ule:
XNote down the service due date displayed inthe multifunction display before disconnect-ing the battery.
or
XAfter reconnecting the battery, subtract thebattery disconnection periods from the ser-vice date shown on the display.
Hiding a service message
XPress the vor 8button on the steer-ing wheel.
ASSYST PLUS277
Maintenance and care
Z
Wear eye protection.
Keep children away.
Observe this Operator's Manual.
For safety reasons, Mercedes-Benz recom-mends that you only use batteries which havebeen tested and approved for your vehicle byMercedes-Benz. These batteries provideincreased impact protection to prevent vehicleoccupants from suffering acid burns shouldthe battery be damaged in the event of anaccident.
In order for the battery to achieve the maxi-mum possible service life, it must always besufficiently charged.
Like other batteries, the vehicle battery maydischarge over time if you do not use the vehi-cle. In this case, have the battery disconnec-ted at a qualified specialist workshop. You canalso charge the battery with a charger recom-mended by Mercedes-Benz. Contact a quali-fied specialist workshop for further informa-tion.
Have the battery condition of charge checkedmore frequently if you use the vehicle mainlyfor short trips or if you leave it standing idlefor a lengthy period. Consult a qualified spe-cialist workshop if you wish to leave your vehi-cle parked for a long period of time.
Only replace a battery with a battery that hasbeen recommended by Mercedes-Benz.
Remove the SmartKey if you park the vehicleand do not require any electrical consumers.The vehicle will then use very little energy,thus conserving battery power.
If the power supply has been interrupted, e.g.if you reconnect the battery, you will have to:
Rset the clock using the multimedia system(see the Digital Operator's Manual)
Rreset the function for folding the exteriormirrors in/out automatically, by folding themirrors out once (Ypage 99)
Charging the battery
GWARNING
During charging and jump-starting, explosive
gases can escape from the battery. There is
a risk of an explosion.
Particularly avoid fire, open flames, creating
sparks and smoking. Ensure there is suffi-
cient ventilation while charging and jump-
starting. Do not lean over a battery.
GWARNING
Battery acid is caustic. There is a risk of
injury.
Avoid contact with skin, eyes or clothing. Do
not inhale any battery gases. Do not lean
over the battery. Keep children away from
batteries. Wash away battery acid immedi-
ately with plenty of clean water and seek
medical attention.
GWARNING
A discharged battery can freeze at tempera-
tures below freezing point. When jump-start-
ing the vehicle or charging the battery,
gases can escape from the battery. There is
a risk of an explosion.
Allow the frozen battery to thaw out before
charging it or jump-starting.
!Only use battery chargers with a maximumcharging voltage of 14.8 V.
!Only charge the battery using the jump-starting connection point.
The jump-starting connection point is in theengine compartment (Ypage 295).
XOpen the hood.
XConnect the battery charger to the positiveterminal and ground point in the same orderas when connecting the donor battery in thejump-starting procedure (Ypage 295).
If the indicator/warning lamps do not light upin the instrument cluster at low temperatures,it is very likely that the discharged battery hasfrozen. In this case you may neither jump-startthe vehicle nor charge the battery. The servicelife of a thawed-out battery may be shorter.The starting characteristics can be impaired,
294Battery (vehicle)
Roadside Assistance