TSB Document:

Affected Component: EQUIPMENT:AIR CONDITIONER

Summary
Some Sonata (YF) vehicles may develop a condition with the separator plate in the middle of the heater box (Heater & Evaporator Assembly) becoming warped and may cause interference against one or more of the internal flaps that control air flow to the vents. This condition may result in HVAC system exhibiting abnormal noise from the heater box, difficulty to control the vented temperature, blocked airflow due to improper mode control, and/or airflow stuck in defrost mode.

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Date Published
MAR 14, 2017
NHTSA TSB #
10110929
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