I wonder what happens if you disable the e-SIM (in the US) and then a safety recall appears via software update - do dealers have any way to update control modules besides OTA?
Yes.
You get a letter in the mail asking you to take your car to the dealer so they can install the update.
Been there. Done this.
Interesting, I reviewed every Rivian software update recall letter I could find before I posted this and they all said something like "If you have not already updated to software version 2025.18.30 or later, please do so to remedy this issue at no cost to you," with no mention of the dealership as a remedy - for example, https://static.nhtsa.gov/odi/rcl/2025/RCLRPT-25V585-0759.pdf . This is different from other manufacturers who explicitly mention the dealer, like this Ford EV recall: https://static.nhtsa.gov/odi/rcl/2025/RCAK-25V863-3736.pdf