Page 245 of 373
Display messages Possible causes/consequences and
M Solutions
# The battery is no
tbeing charged.
Aw arning tone also sounds.
Possible causes:
R fault yalternator
R torn poly-V-belt
R am alfunctio nintheelectronics
X Stop th evehicle immediately, payin gattentio ntoroad and traf-
fic conditions, and switch off the engine.
X Secure the vehicle against rolling away (Y page 159).
X Open the bonnet.
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 OK:
X Visit aqualified specialist workshop. 4
Check eng. oil
lev. when next
refuelling The engine oil level has dropped to the minimum level.
Aw
arning tone also sounds.
X Chec kthe oil level when next refuelling, at the latest
(Y page 298).
X If necessary, top up the engine oil (Y page 298).
X Have the engine checked at aqualified specialist workshop if
the engine oil needs topping up more often than usual. 4
Add
1 litre engine
oil when next refu‐
elling AMG vehicles: the engine oil level is too low.
X
Check the oil level when next refuelling, at the latest
(Y page 298).
X If necessary, top up the engine oil (Y page 298).
X Have the engine checked at aqualified specialist workshop if
the engine oil needs topping up more often than usual. 8
Reserve fuel level The fuel level has dropped into the reserve range.
Operation of the auxiliary heating is deactivated when the fuel level
drops into the reserve range.
X
Refuel at the nearest filling station. 242
Display messagesOn-board computer and displays
Page 257 of 373
Vehicle
Display messages Possible causes/consequences and
M Solutions
To start engine,
shift to either P
or N Yo
uh avea ttempte dtostart the engine with the transmission in
position Ror D.
X Shift the transmission to position Por N. Auxiliary battery
malfunction The auxiliary battery for the automatic transmission is no longer
being charged.
X
Visit aquali fied specialist workshop. Apply brake to
deselect
Par
k(P) position Yo
uh avea ttempte dtomove the transmission selector lever to
position D,Ror Nwithou tdepressing the brake pedal.
X Depress the brake pedal. Risk of vehicle
rolling
Transmission not
in P The driver's door is open and the transmission is in position
R,N
or D.
Aw arning tone also sounds.
X Shift th etransmission to position P.
X Secure th evehicle against rolling away ( Ypage 159). Withou
tchanging gear,
consul
tworkshop You canno
tchange the transmission position due to amalfunction.
Aw arning tone also sounds.
If transmission position Dis selected:
X Drive to aqualified specialist worksho pwithout shiftin gthe
transmission from position D.
If transmission position R,Nor Pis selected:
X Consult aqualified specialist workshop. Onl
ys elect position
Pwhen vehicle is station‐
ary The vehicle is moving.
X
Pull ove rand stop the vehicl esafelyass oonasp ossible,p aying
attention to road and traffic conditions.
X Shift the transmission to position P.N The boot lid is open.
X
Close the boot lid. 254
Display messagesOn-board computer and displays
Page 258 of 373
Display messages Possible causes/consequences and
M Solutions
M The bonne
tisopen. Awarning tone also sounds.
G WARNING
The open bonne tmay then bloc kyour view when the vehicle is in
motion.
There is arisk of an accident.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 159).
X Close the bonnet. C At least one door is open.
Awarning tone also sounds.
X Close all doors. _
Rea
rl efts eat backrest not
locked or
Rear right sea
tback‐ res
tn ot locked The backres
tinthe rear is not engaged on the left-hand and/or
right-hand side. Awarning tone also sounds.
X Push th ebackres tback until it engages. _
Front lef
tseat backrest not
locked or
Front right sea
tback‐ res
tn ot locked The driver'
sorfront-pa ssenger seat backres tisnot engaged. A
warning tone also sounds.
X Push the backrest back until it engages. &
inoperative Bat‐
tery low The on-board voltage is too low. The auxiliary heating has switched
itself off or cannot be switched on (Y
page 132).
X Drive for alonger distance.
The battery is being charged. The auxiliary heating is operational
againass oon as the on-board electrical system voltage is suf-
ficient. &
inoperative
Refuel
vehicle There is too little fuel in the fuel tank. The auxiliary heating cannot
be switched on (Y
page 132).
X Refuel at the nearest filling station. Display messages
255On-board computer and displays Z