Tube-Condensation Drain: Description
Condensation that accumulates within the HVAC housing is drained through a port (4) that protrudes through the dash panel (1). A rubber condensation drain tube (3) is installed onto the drain port with a retaining clamp (2) to ensure that any condensation completely drains to the ground.
NOTE:
The condensation drain tube must be kept open to prevent condensate water from collecting in the bottom of the HVAC housing.
The tapered end of the condensation drain tube is designed to keep contaminants from entering the HVAC housing. If the tube is pinched or blocked, condensate cannot drain, causing water to back up and spill into the passenger compartment. It is normal to see condensate drainage below the vehicle in warm weather.
If the condensation drain tube is damaged or missing, it must be replaced.