Mercedes-Benz GLK-Class 2010 Owners Manual - Manual (Page 215)

Any noticeable irregularities in engine
operation should be repaired promptly.
Otherwise, excessive unburned fuel may
reach the catalytic converter, causing it to
overheat and potentially start a fire.
i Only use premium unleaded gasoline with
a minimum Posted Octane Rating of 91
(average of 96 RON/86 MON).
Information on gasoline quality can
normally be found on the fuel pump. Please
contact gas station personnel in case
labels on the pump cannot be found.
Locking/unlocking the vehicle with the
SmartKey or KEYLESS-GO automatically
locks/unlocks the fuel filler flap.
i In case the central locking system does
not release the fuel filler flap, see “Fuel filler
flap” (
Y page 301).
The fuel filler flap is located on the right-hand
side of the vehicle towards the rear.
X Turn off the engine.
i Leaving the engine running and the fuel
filler cap open can cause the yellow engine
malfunction indicator lamp ; to
illuminate.
For more information, see also “Practical
hints” (
Y page 295).
X Remove the SmartKey from the starter
switch.
KEYLESS-GO: Open the driver’s door. This
puts the starter switch in position
0, same
as with the SmartKey removed from the
starter switch. The driver’s door then can
be closed again.
X Opening: Press fuel filler flap : at the
point indicated by the arrow.
X Turn fuel filler cap ; counterclockwise.
X Take off fuel filler cap ;.
X Place fuel filler cap ; in direction of arrow
into holder =.
X Fully insert filler nozzle unit and refuel.
X Only fill your tank until the filler nozzle unit
cuts out –
do not top off or overfill.
X Closing: Turn fuel filler cap ; clockwise
until it audibly engages.
i Close the fuel filler flap before locking the
vehicle. Otherwise the flap locking pin will
prevent closing the fuel filler flap.
X Close fuel filler flap :.
Check regularly and before a long trip
For information on quantities and
requirements of operating agents, see “Fuels,
coolants, lubricants, etc.” (
Y page 334).
Check the following:
R
Engine oil level ( Y page 215)
R
Tire inflation pressure ( Y page 221)
R
Coolant level ( Y page 216)
R
Vehicle lighting ( Y page 303)
R
Washer system and headlamp cleaning
system (
Y page 217)
R Brake fluid ( Y page 217)
At the gas station
213
Operation
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