Display messages Possible causes/consequences and
000B Solutions
0012 The battery is no
tbeing charged.
Aw arning tone also sounds.
Possible causes are:
R ad efective alternator
R at ornp oly-V-belt
R am alfunctio nintheelectronics
X Pull ove rand stop the vehicl esafelya nd switch off the engine,
paying attentio ntoroada nd traffic conditions.
X Ope nthe hood.
X Check whether the poly-V-belt is torn.
If the poly-V-belt is torn:
! Do not continue driving. The engine could otherwise overheat.
X Consult aqualified specialist workshop.
If the poly-V-belt is not damaged:
X Visit aqualified specialist workshop immediately. 0008
Check Engine Oil
At Next Refueling The engine oil level has dropped to the minimum level.
Aw
arning tone also sounds.
X Chec kthe oil level when next refueling, at the latest
(Y page 281).
X If necessary, add engine oil (Y page 282).
X Have the engine checked at aqualified specialist workshop if
engine oil needs to be added more often than usual.
! Avoid long journeys with too little engine oil. The engine will
otherwise be damaged.
Information on approved engine oils can be obtained from any
qualified specialist workshop or on the Internet at http://
bevo.mercedes-benz.com. 0007
Fuel Level Low The fuel level has dropped into the reserve range.
X
Refuel at the nearest gas station. Display messages
225On-board computer and displays Z
batteries to
aqualified
specialist workshop or a
special collection point for
used batteries.
! Have the battery checked regularly at a
qualified specialist workshop.
Observe the servic eintervals in the
Maintenance Booklet or contact aqualified
specialist workshop for more information.
! You should have all work involving the
battery carried out at aqualified specialist
workshop. In th eexcepti onal cas ethatitis
necessar yfor you to disconnect th ebattery
yourself, mak esure that:
R you switch off th eenginea nd remove the
SmartKey. Chec kthata ll th eindicator
lamps in th einstrumen tcluste rare off.
Otherwise, electronic components, such
as th ealternator, may be damaged.
R you first remove th enegative terminal
clam pand then th epositive terminal
clamp. Never swap th etermi nal clamps.
Otherwise, th evehicle's electronic
system may be damaged.
R on vehicles wit hautomatic transmission,
th et ransmission is locke dinposition P
after disconnecting th ebattery. The
vehicl eissecured against rollin gaway.
You can then no longer mov ethe vehicle.
The battery and th ecover of th epositive
terminal clam pmust be installed securely
durin goperation.
Comply wit hsafet yprecaution sand take
protective measures when handling
batteries. Risk of explosion.
Fire, open flames and smokin
gare
prohibited when handlin gthe
battery. Avoid creating sparks. Battery acid is caustic. Avoid
contact wit
hskin, eyes or clothing.
Wear suitable protective clothing,
especially gloves, apro nand
faceguard.
Rinse any aci dspillsimmediately
with clear water. Contact a
physician if necessary. Wear ey
eprotection. Kee
pchildren away. Observ
ethisO perator' sManual.
For safety reasons ,Mercedes–Benz
recommends tha tyou only use batteries that
have been tested and approved for your
vehicle by Mercedes-Benz. These batteries
have greater impact resistanc eand as aresult
there is no risk of acid burns to occupants
when abattery is damaged in an accident.
In order for the battery to achieve the
maximum possible service life, it must always
be sufficiently charged.
Like other batteries, the vehicle battery may
discharge over time if you do not use the
vehicle. In this case, have the battery
disconnected at aqualified specialist
workshop. You can also charge the battery
with acharger recommended by Mercedes-
Benz.C ontactaqualified specialist workshop
for further information.
Have the battery condition of charge checked
more frequently if you use the vehicle mainly
for short trips or if you leave it standin gidle
for alengthy period. Consult aqualified
specialist workshop if you wish to leave your
vehicle parked for along period of time.
Only replace abattery with abattery that has
been recommended by Mercedes-Benz. Battery (vehicle)
301Breakdown assistance Z
