Affected owners will normally be included automatically. If there is a settlement owners will be contacted and given an opportunity to opt-out.

For example, Tesla recently lost another warranty case over the solar roof.

https://ia803409.us.archive.org/2/items/gov.uscourts.cand.37...

This will likely be canceled, like the previous iteration. It will just take months of arguments before the "amended complaint" is resolved.

You have no rights against Tesla. All disputes will go to a for-profit psuedo-court known as "arbitration", where the arbiters only continue to make money if they rule against you.

The American Arbitration Act overrides all other federal and state laws that benefit you. The arbiter, according the political decisions of SCOTUS, have decided that a manifest disregard for the law is no prohibition. The arbiter may decide to award Tesla 1 million USD against you for challenging Tesla and you have no recourse against this. You have no rights and infinite liability when challenging them.

Such is the consequences of sneaky contracts and mandatory binding arbitration that causes the majority of Americans to lose fundamental rights without understanding it.