Make sure to follow the step re turning on the recic mode.
Step 1 - Turn on the re-circulation mode
Before you start replacing the air filter, it's crucial to make sure your car is on re-circulation mode. Failing to do so can result in thousands of dollars worth of damage, as the computer control damper will be forced open, ultimately damaging the vehicle's HVAC system. To do this, simply press the "re-circulation" button or mode.
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