The largest online repair guide library for every car

About us
Contact support
FAQ
Sign up
Sign in

Rough Shifting & Hesitation in my 2017 Acura MDX - Is this a known issue?

0

Chris P. · rep 0 · May 22, 5:02 AM · 1 replies · solved · Question

Vehicle: 2017 Acura MDX Advance

Hey everyone,

I've been noticing some really rough shifting and hesitation in my 2017 Acura MDX Advance, especially at lower speeds and when downshifting. It feels like the transmission is struggling to find the right gear, and sometimes there's a noticeable jerk.

I bought it used a few months ago, and while it's generally a great SUV, this transmission behavior is starting to concern me. It's got about 75,000 miles on it now. I'm wondering if this is a common characteristic of the 9-speed automatic in these MDXs, or if it's a sign of a bigger problem.

Has anyone else experienced similar issues with their 2016-2018 MDX? Should I be worried, or is there a known fix or software update for this? Any advice on what to tell the dealership if I take it in would be greatly appreciated. Thanks!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 5:02 AM

0

ClearTheCode admin answer:

It's understandable to be concerned about rough shifting in your 2017 Acura MDX. The 9-speed ZF automatic transmission, which was used in several Acura models including the MDX and TLX during those years, has been known to exhibit some unique shifting characteristics, and in some cases, more pronounced issues.

Here's what you should consider:

  1. Common Characteristics vs. Problem: While some owners report the 9-speed ZF transmission can feel a bit 'busy' or have occasional quirks, excessive harshness, jerking, or significant hesitation is generally not normal. Your description suggests it might be beyond typical behavior.

  2. Potential Causes:

    • Software Calibration: The most common cause for these symptoms is often related to transmission control module (TCM) software calibration. Acura has released several Technical Service Bulletins (TSBs) over the years to address shifting quality with software updates.
    • Transmission Fluid Degradation: Over time and mileage, transmission fluid can degrade, leading to less efficient lubrication and shifting. While 75,000 miles isn't extremely high, it's worth checking the fluid condition.
    • Solenoid Issues: Less commonly, internal solenoids within the transmission can start to malfunction, affecting fluid pressure and gear engagement.

  3. Recommended Steps:

    • Check for TSBs: Your first step should be to contact an Acura dealership with your VIN. Ask them to check for any outstanding TSBs or recalls related to the transmission for your specific 2017 MDX. There were TSBs like 16-048 and 18-052 (for TLX, but similar transmissions) that addressed software updates for shifting improvements.
    • Diagnostic Scan: While rough shifting doesn't always trigger a Check Engine Light or an OBD-II code, a professional diagnostic scan can sometimes reveal pending transmission-specific codes (e.g., P0700 series) or provide data on transmission performance.
    • Transmission Fluid Service: If no TSBs apply or resolve the issue, consider a transmission fluid drain and fill. Ensure the correct Acura DW-1 fluid is used. This is often recommended around 60,000-90,000 miles for severe service, but can sometimes help with shifting issues even if not strictly due for maintenance.

  4. When to See a Shop: You should definitely take your MDX to an authorized Acura dealership or a reputable independent shop specializing in Acura vehicles. Explain the symptoms clearly, mentioning when they occur (e.g., cold start, specific gears, low speed). Request they check for the latest software updates and perform a thorough transmission diagnosis. Addressing this proactively can prevent more significant and costly repairs down the line.

Menu

Help & account