Mercedes-Benz GL-Class 2012 Owners Manual - Manual (Page 337)

X To open: insert a suitable object, e.g. a
coin, into the slot of release button : on
the cover.
X Turn release button : 90° in the direction
of the arrow.
X Open cover ; downwards.
Engine emergency off
If the engine cannot be switched off as
described, observe the following procedure:
X Take the fuse allocation chart out of the
vehicle tool kit (
Y page 314).
X Search for fuse 120 in the fuse allocation
chart.
X Open the fuse box in the engine
compartment (
Y page 334).
X Remove fuse 120.
Fuses
335
Breakdown assistance
Z