Updating Acura EP control unit software

June 18, 2024
After driving in reverse and steering in a 2014-2015 Acura MDX, the owner may hear a buzz or grunt after shifting from reverse to drive while turning the steering wheel.

After driving in reverse and steering in a 2014-2015 Acura MDX, the owner may hear a buzz or grunt after shifting from reverse to drive while turning the steering wheel.

The electric power steering (EPS) software is designed to provide correct feel in reverse and forward directions. Updated software is designed to prevent the buzz or grunt during the transition of rapidly changing from reverse to drive while turning the steering wheel.

Update the EP control unit software using application version 3.01.40 or later and HDS software version 3.015.020 or later. Before beginning the repair, make sure that both the HDS and MVCI are updated. If the MVCI displays “This vehicle does not need an update at this time” during the update, the software has already been installed.

YEAR/MODEL                                             PROGRAM ID

PROGRAM P/N

2014-2015 MDX 2WD Tech. ...................... 39990-TZ5-A01

2014-2015 MDX 2WD Advance.................. 39990-TZ5-A61

2014-2015 MDX SH-AWD Tech...................39990-TZ6-A01

2014-2015 MDX SH-AWD ..........................39990-TZ6-A61

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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