Acura RLX SPORT HYBRID 2017 Owner's Manual page 141

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Unlocking the doors
Press the unlock button.
Once:
u Some exterior lights flash twice, and the driver's door unlocks.
Twice:
u The remaining doors unlock.
uuLocking and Unlocking the DoorsuLocking/Unlocking the Doors from the Outside
1Using the Remote Transmitter
Continued
If the distance at which the remote transmitter works
varies, the battery is probably low.
If the LED does not come on when you press a
button, the battery is dead.
2 Replacing the Button Battery P. 498
You can customize the door unlock mode setting.
2 Customized Features P. 113, 283
139