158Refuelling
C
Ca
au
ut
ti
io
on
n
On vehicles with a catalytic converter, never drive until the fueltank is
completely empty. The irregular fuel supply can cause misfiring. This allows
unburnt fuel into the exhaust system, which can cause overheating and
damage to the catalyst.
K
Releasing tank flap manually
If the central locking system should fail, the flap can be released
manually:
• Open tailgate and – if fitted – fold back the right luggage
compartment trim from side panel.
• Then push the locking rod in front of the white diaphragm
housing backward slightly in direction of arrow
⇒fig. 150.K
P
Pe
et
tr
ro
ol
l
In the chapter “Technical Data” and on the inside of the tank flap
you will find information on the correct octane rating for your
engine.
K
General notes
•Unleaded petrol must comply with DIN EN1)228 and leaded
petrol with DIN 51 600.
•If, in an emergency, the octane rating of the available petrol is
lower than that required by the engine, only drive with medium
engine speeds and low engine loading. H Hi
ig
gh
h een
ng
gi
in
ne
e llo
oa
ad
di
in
ng
g wwi
it
th
h
f fu
ul
ll
l tth
hr
ro
ot
tt
tl
le
e oor
r hhi
ig
gh
h rre
ev
vs
s cca
an
n cca
au
us
se
e een
ng
gi
in
ne
e dda
am
ma
ag
ge
e.
.
Fill tank with
petrol of the correct octane rating as soon as possible.
•Fuel with a higher octane rating than that required by the engine
can be used without limitation. There are, however, no advantages
regarding output and consumption.
F Fo
or
r tth
he
e ssa
ak
ke
e oof
f tth
he
e een
nv
vi
ir
ro
on
nm
me
en
nt
t
Even one tankful of leaded petrol will detract from the efficiency ofthe
catalytic converter.
N No
ot
te
e
See chapter “Filling the tank”.K
1)European norm
B7M-093CFig. 150
