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2018 TLX V6 9-Speed Transmission Shifting Rough - Is this normal?

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Ashley M. · rep 0 · May 22, 5:02 AM · 1 replies · solved · Question

Vehicle: 2018 Acura TLX V6 A-Spec

Hey everyone,

I've got a 2018 Acura TLX V6 A-Spec with about 60,000 miles on it, and lately, the 9-speed automatic transmission has been acting a bit strange. I'm noticing some pretty rough shifts, especially when downshifting at lower speeds or accelerating from a stop.

It feels like there's a hesitation sometimes, and then a noticeable jolt when it finally engages. It's not constant, but it's happening more frequently. Is this a common characteristic of the ZF 9-speed in these cars, or should I be concerned?

Has anyone else experienced this? Are there any known TSBs or software updates that address this issue? Just trying to figure out if it's something I need to take to the dealer for a closer look.

✓ Accepted solution

ClearTheCode Admin

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

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ClearTheCode admin answer:

It's a known concern for some owners of the 2016-2020 Acura TLX models equipped with the ZF 9-speed automatic transmission. While some degree of 'character' can be expected from this transmission due to its design, persistent rough shifting or hesitation is not normal and should be investigated.

Here's what you should consider:

  1. Software Updates/TSBs: Acura has released several software updates and Technical Service Bulletins (TSBs) over the years to address shifting characteristics of the 9-speed transmission. Your dealership can check if your vehicle has the latest software installed. These updates often improve shift quality and responsiveness.
  2. Adaptive Learning: The transmission has an adaptive learning feature that adjusts shift points based on your driving style. Sometimes, resetting this learning can help, though it's typically done by a dealership or a qualified technician.
  3. Transmission Fluid Condition: While less common at 60,000 miles for severe issues, checking the transmission fluid level and condition is always a good diagnostic step. Low or degraded fluid can contribute to poor shifting. Acura recommends specific fluid (DW-1 or Type 2.0) and service intervals.
  4. Potential Mechanical Issues: In rare cases, internal transmission components could be failing. However, this is usually accompanied by more severe symptoms, warning lights, or specific diagnostic trouble codes (DTCs).

When to see a shop:

  • If the rough shifting is getting worse or becoming more frequent.
  • If you experience any warning lights on your dashboard (e.g., Check Engine Light, Transmission Malfunction Indicator).
  • If the vehicle is hesitating significantly or slipping out of gear.

Start by contacting your Acura dealership to inquire about any outstanding software updates or TSBs for your specific VIN. They can perform a diagnostic scan to check for any stored transmission-related fault codes.

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