All they have told me is that the part is no longer in production. I assume it might become available via used market in the future.
No sign of rodent intrusion in the cabin, so far.
Thank you @Sandroad and @bloc for your helpful responses.
Need advice on whether to proceed with repairs at the dealer (central Oregon/US) or just let it be.
2011 LC. Started having some sporadic issues with the climate system; it would not turn on until the vehicle was well-warmed-up. The mechanic at the local Toyota dealership said rodents have been...