BMW C 400 X Rider's Manual page 174

Close topcase
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172
Be sure that the topcase han-
dle 2 is folded out.
z
Close Topcase cover and
press into lock. Ensure that
no items are trapped between
cover and case.
Close the topcase handle 2.
If necessary, turn the key in
topcase lock to the CLOSE
position and remove it.
Remove topcase
Turn the key in the topcase
lock 1 to position OPEN.
Press Topcase lock forward.
The topcase handle 2 pops up.
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Turn key in Topcase lock to
RELEASE position.
Pull the release lever 4 back
while lifting the topcase by the
carrying handle.
Remove the topcase from the
topcase carrier toward the
back.