Detect Rodent Blockages in Vehicle Cabin Airflow

Cost Savings

Checklist Tasks

• Remove cabin air filter to check for shredded debris that restricts airflow.
• Shine a flashlight in filter housing to spot seeds or droppings from rodents.
• Check for musty odors from vents, signaling possible rodent matter in ductwork.
• Run blower fan at all speeds to detect rattling or vibration indicating debris.
• Inspect intake cowl under windshield for nesting materials or blocked airflow.
• Use a flexible camera to check ductwork for hidden blockages or gnawed wiring.
• Check under dashboard for loose insulation or chewed plastic near HVAC parts.
• Examine vent outlets for reduced airflow or visible debris, especially passenger side.
• Inspect recirculation door for obstructions or evidence of rodent damage.
• Check for bite marks or frayed wiring near blower motor resistor and modules.
• Inspect evaporator drain tube for clogs from nesting, which can cause leaks.
• Document any rodent evidence to support possible warranty or insurance claims.