Ford Expedition clicking noise from rear panels due to faulty blend and mode door actuators on Ford Expedition

Submitted by bmdouble · Jun 23, 2025
Published by RepairPal

Problem overview

Some Ford Expedition owners report experiencing a clicking noise from the rear panels, particularly when the rear A/C is activated, which is often linked to issues with the blend and mode door actuators. This clicking sound is typically associated with a failed actuator or stuck blend doors, which control the mix of hot and cold air entering the vehicle. Many owners note that the rear HVAC unit produces knocking, ticking, or clicking noises due to faulty blend door actuators when the rear heater or air conditioner is in use. To investigate the source of the noise, owners can access the blend door actuators by removing the rear side panel where the sound originates. Additionally, the clicking may indicate temperature control problems, as the actuator may fail to blend hot and cold air correctly. To identify the specific actuator causing the noise, some owners touch the motors during the clicking to pinpoint the malfunctioning component. Prompt investigation and potential replacement of these actuators are recommended to restore normal operation of the HVAC system.

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