Yes, they are replaceable.Always disconnect battery terminals Your first responsibility prior to starting the installation process is to disconnect the terminals from the battery. Furthermore, make sure to let the car sit for at least one hour so that any battery backups from the SRS system have completely drained. Never probe the airbag with your meter WARNING! Never use the probs on your meter to directly test the terminals or connectors on any airbag. The airbag requires only 2 - 3 ohms for deployment and touching the airbag terminals with your meter may provide enough current to activate the airbag. This warning applies to all airbag types, including but not limited to side airbags, roof airbags, knee airbags, foot airbags, seat airbags, etc.