Adding a Suica commuter pass to Apple Pay is just as easy as a regular Suica. You can also renew the commuter pass right in Wallet without a trip to the Suica app. One thing you need to be careful of is the commuter pass renewal window.
Suica commuter passes are good for 1-3-6 month renewable intervals which you choose when renewing the pass in Wallet. You can only renew a commuter pass two weeks before the expiration date. If you go past the expiration date and miss the two-week renewal window you can no longer renew the commuter pass in Wallet.
In this case you have to go to the Suica app and purchase a “new” commuter pass. You will need to input the station points, any transfer station point and select the validity interval. The last step is the purchase with Apple Pay. Once complete your Apple Pay Suica commuter pass is ready to go. It is not a new card, it is the same card with a new validity period.