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Rough Shifting & Jerking from 9-Speed Transmission on my 2016 TLX V6

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Mike T. · rep 0 · May 26, 3:34 AM · 1 replies · solved · Question

Vehicle: 2016 Acura TLX V6 SH-AWD

Hey everyone, I've got a 2016 Acura TLX V6 SH-AWD with about 85,000 miles, and lately, the 9-speed automatic transmission has been acting really weird. It feels like it's struggling to find the right gear, especially at lower speeds or when downshifting.

Sometimes, it gives a noticeable jerk when shifting, almost like someone lightly rear-ended me. It's not consistent, but it's happening more frequently now. I'm worried this might be a serious issue.

Has anyone else experienced this with their TLX? What was the fix? Should I be looking at a transmission fluid change, or is this a sign of something more major?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 26, 3:34 AM

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ClearTheCode admin answer:

Rough shifting and jerking in the 9-speed automatic transmission (ZF 9HP) on the 2016 Acura TLX V6 is a known concern for some owners. Here’s what you should investigate:

  1. Transmission Software Update: Acura has released several software updates over the years to address shifting characteristics and improve overall transmission performance. This is often the first and most effective step. A dealership can check if your vehicle has the latest software version and apply it if needed.
  2. Transmission Fluid Condition: While the 9-speed transmission uses a 'lifetime' fluid, fluid degradation can still occur, especially under severe driving conditions. A fluid change using genuine Acura DW-1 fluid (or equivalent for the ZF 9HP) might help. Ensure the correct fill procedure is followed, as it's sensitive to temperature.
  3. Reset Transmission Adaptive Learning: The transmission's computer learns your driving style. Sometimes, resetting these adaptive values can help it relearn optimal shift points. This can be done with a diagnostic tool at a shop.
  4. Physical Component Inspection: If software and fluid don't resolve the issue, a deeper inspection may be needed. This could include checking for solenoid issues, clutch pack wear, or valve body problems. Common diagnostic trouble codes (DTCs) related to transmission issues might include P0700 (Transmission Control System Malfunction) or specific codes for shift solenoids or pressure control. Your mechanic can pull these codes.

When to See a Shop: If the issue persists after a software update or fluid change, or if you notice any warning lights (like the 'D' light flashing or a 'Check Engine' light), it's crucial to have a qualified Acura technician or transmission specialist diagnose the problem promptly. Ignoring transmission issues can lead to more severe and costly repairs down the line.

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