Acura RLX 2017 Owner's Manual page 175

uuInterior Lights/Interior Convenience ItemsuInterior Convenience Items
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Trunk Pass-through Cover
Button
174
Pull the rear seat armrest down and push the
Lock
button to open the cover.
You have access to the trunk from this
opening in the rear seat-back.
The cover latches when you push it back to
the original position.
Cover
You can lock and unlock this cover using the
built-in key.