Mending Acura fan and fuse problem

    Sept. 10, 2024
    This bulletin applies to 2016-2019 Acura MDX, 2017-2019 MDX Sport Hybrid and 2018-2019 TLX vehicles.
    Related To:
    Photo courtesy of Mitchell 1
    Option fuse location for the MDX.
    Option fuse location for the MDX.
    Photo courtesy of Mitchell 1
    Option fuse location for the TLX.
    Option fuse location for the TLX.

    This bulletin applies to 2016-2019 Acura MDX, 2017-2019 MDX Sport Hybrid and 2018-2019 TLX vehicles. The vehicle may exhibit several of the following:

    - Multiple injectors are on

    - No communication with the i-HDS

    - The option fuse (7.5A) is blown (on MDX: Fuse E21; on TLX, Fuse B7)

    - The MDX engine may be difficult to shut off

    - The TLX transmission will not shift from Park

    Under certain conditions, the battery fan motor draws excessive current, causing the option fuse to blow. If the option fuse is blown, replace the blower fan motor and fuse.

    PART                                                PART NUMBER

    Battery fan motor, MDX............. 31651-TZ5-A02

    Battery fan motor, TLX............... 31651-TZ3-A02

    Fuse (7.5A)............................... 38221-SNA-A31

    About the Author

    Motor Age Staff

    Motor Age has been publishing technical content for professional automotive technicians since 1899. Our writers have decades of experience and scores of ASE certifications, and they continue to teach new generations of technicians via classrooms all around the globe, as well as through the books and training manuals they've authored. 

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