Mercedes-Benz SLR McLaren. Operator's Manual.

Controls in detail
Locking and unlocking
Lower trunk lid by firmly pulling on
handle 1.
102
!
Do not pull on the Airbrake. Otherwise
the Airbrake could be damaged.
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Do not place the SmartKey in the open
trunk. You may lock yourself out.
If the vehicle was previously centrally
locked, the trunk lid will lock automatically
after closing it. The turn signals
will flash three times to confirm locking.
Trunk emergency release
The emergency release button is located
on the inside of the trunk lid.
With the emergency release button, the
trunk can be opened from inside the trunk.
Emergency release button
Briefly press emergency release button.
The trunk unlocks and the trunk lid
opens slightly.
Push up the trunk lid to fully open.
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The emergency release button unlocks
the trunk while the vehicle is standing
still or in motion.
Illumination of the emergency release
button:
The button will flash for 30 minutes
after opening the trunk.
The button will flash for 60 minutes
after closing the trunk.