At a glance
What can fail
The HVAC blower relay resistor module and its wiring connector may not handle high current levels reliably. Moisture and road salt can enter the fresh air intake and corrode the module's internal circuits and terminals, causing overheating.
What the fix does
Dealers will replace the blower motor resistor module and connector at no cost under extended warranty coverage for 10 years or 240,000 km from first registration.
Summarized — see the official notice for exact wording, dates, and contacts.