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    1. TSBs

    Doublecheck the Acura Differential

    June 4, 2023
    This bulletin applies to 2014-2017 Acura MDX and 2015-2017 TLX with SH-AWD. If you suspect a rear differential axle seal or pinion seal leak, the actual culprit may be something loose or damaged above this area.
    Photo: Mitchell 1
    At left is an example of a fluid leak caused by a loose pressure check port, appearing as a pinion sea leak. At right is the fluid pressure sensor that may leak onto the axle seal.
    At left is an example of a fluid leak caused by a loose pressure check port, appearing as a pinion sea leak. At right is the fluid pressure sensor that may leak onto the axle seal.

    DON’T GET FOOLED

    This bulletin applies to 2014-2017 Acura MDX and 2015-2017 TLX with SH-AWD. If you suspect a rear differential axle seal or pinion seal leak, the actual culprit may be something loose or damaged above this area.

    A loose or damaged fluid pressure sensor will drip rear differential fluid onto the axle seal. A loose fluid pressure check port will drip fluid onto the pinion seal. Before considering rear differential replacement or service, be sure to check these two locations carefully to avoid unnecessary repairs.

    About the Author

    Information courtesy of Mitchell 1

    Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.

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