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Acura Jerky Upshifts Call for TCM Reprogram

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This bulletin applies to all 2016-2019 Acura MDX, 2020 MDX AWD and 2WD, 2015 TLX 2WD and AWD vehicles, equipped with a V6 and 9-speed automatic transmission. The transmission may exhibit harsh or jerky upshifts with steady acceleration. 

There are abnormal TCM adaptation values in the TCM software. 

Update the software using i-HDS 1.006.004 or later, HDS 3.104.002 or later, or PC application version 1.2.1.1 or later.  

Do not use the Mongoose PRO VCI for this service as it is not an American Honda-approved device.

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