Vizio SB4021E-A0-NA Guide De Démarrage Rapide page 16

PAIRING THE SUBWOOFER
1
First confirm that the power switch is in the ON position.
Press and hold the Pairing button on the back of the
Subwoofer for 5 seconds. The LED on the back of the
Subwoofer will begin to blink.
VIZIO has paired your Sound Bar and Subwoofer at the
factory, however you may need to pair the Subwoofer to the
Sound Bar if there is no sound coming from the Subwoofer.
What does Pairing mean?
Pairing means to wirelessly connect.
2
Press and hold the Pairing button on the bottom of the
Sound Bar for 5 seconds. The green LED on the back of
the Sound Bar will blink then go solid. The Subwoofer is
now linked with the Sound Bar.