I noticed that when just driving around in the 944, regardless of whether my heat was on, my vents would blow hot air. Thankfully it turns out this is a common failure mode. The clip that holds the rod for the heat flap breaks causing the rod that actuates it to fail open (so you don't freeze in Germany during a failure). The actuator is located behind a plastic cover under the dash and you just have to replace the plastic clip and retainer, reattach the rod and you're good to go.
 |
| Broken heater flap rod clip |
 |
| Clip and retainer replaced |
Maintenance Update:
Mileage: 99,056
- New heater flap clip and retainer
