TLX Transmission Slips While Accelerating and Bumps While Slowing Down

Acura TLX owners have complained that the 8-speed dual clutch transmission (DCT) slips on the upshift while accelerating. They also reports bumps or jerks when the vehicle comes to a stop.

Complaints About Acura Transmissions

  • Rough shifting, transmission jerks or shudders – most likely mechanical failure of the transmission
  • "D4" and "Check Engine" light begin to blink – possibly a faulty sensor
  • "Once the car is over 45 mph the transmission is fine"
  • "The car will engage back into gear when I restart the car after 5 mins"
  • "At 40 mph when going into 4th gear feels like you are running over rumble strips"
  • Engine codes: OBD trouble codes P0700, P0730, P0740, P0780

"2015 TLX transmission where it jerks from 2-3rd gear"

Side effects might include becoming a jerk at the office if you're dealing with these transmission shudders on the way into work.

Common signs of a malfunctioning torque converter include:

  • High stall speeds
  • Overheating
  • Strange noises
  • Dirty fluid
  • Slipping
  • Shuddering

Engine Codes

Engine codes P0700 and P0730 indicate a malfunction in the transmission control system. It often means the transmission in slipping which may result in the jerking of shuddering often reported by owners. Not only will the vehicle stop shifting properly, but the engine won't run otimally resulting in decreased fuel economy and the transmission might go into full fail-safe mode and might die when the car comes to a stop. This could all be due to a faulty shift solenoid or dirty transmission fluid.

Engine codes

If the vehicle won't shift into its top gear on the highway, or it mis-fires or dies when coming to a stop, there might be a problem with a defective torque converter lockup solenoid or cinverter clutch. This might result in OBD-II code P0740 or P0780

TSB 15-021 permalink

On April 23, 2015 Acura released TSB #15-021 titled Transmission Slips or Shifts Hard When Cold covering a specific VIN range of the 2015 Acura TLX. In the TSB, Acura outlines that the 8-speed dual clutch transmission (DCT) slips on the 1st of 2nd upshift while accelerating. It also acknowledges that the owner might feel a bump or jerk when the vehicle comes to a stop.

The automaker blames the problem on the powertrain control module (PCM) settings, along with the clutches in the torque converter not being properly "broken in." To fix it, mechanics are advised to do a PCM software update, followed by clutch break-in procedure (twice).

2015 TLX Transmission May Unexpectedly Shift To Neutral Posted 2017-01-13

NHTSA has assigned this recall ID #16V640000. There are 8,354 vehicles affected. Recall Summary

Honda (American Honda Motor Co.) is recalling certain model year 2015 Acura TLX 2WD and 4WD vehicles. In the affected vehicles, the transmission wire harness connections may have insufficient crimps, and, as a result, the transmission may unexpectedly shift to neutral. The Problem

If the vehicle unexpectedly shifts to neutral, there is an increased risk of a crash. The Fix

Acura has notified owners, and dealers will, based on the automatic transmission serial number, update the transmission software to prevent the transmission from shifting into neutral due to a faulty crimp, free of charge. The recall began January 13, 2017. Owners may contact Acura Client Relations at 1-888-234-2138. Honda's number for this recall is KC2.

2015 TLX Automatic Transmission Not Shifting Into Park Posted 2015-01-30

NHTSA has assigned this recall ID #14V779000. There are 9,392 vehicles affected. Recall Summary

American Honda Motor Co. (Honda) is recalling certain model year 2015 Acura TLX V6 2WD vehicles manufactured July 14, 2014, to November 12, 2014, and certain 2015 TLX V6 SH-AWD vehicles manufactured August 26, 2014, to November 10, 2014. The automatic transmission parking pawl may become contaminated or the park rod may become dislodged or broken. This may prevent the transmission from shifting into the Park position. The Problem

If the shift indicator displays "Park" but the park lock does not engage, the vehicle may roll away increasing the risk of a crash. The Fix

Honda will notify owners, and dealers will inspect and replace the transmission if necessary, free of charge. The recall began January 30, 2015. Owners may contact Honda customer service at 1-310-783-2000. Honda's number for this recall is JM8.

NHTSA ID: 10118216 TSB ID: B17-011

Service bulletin - some 9-speed transmission warmers were improperly manufactured and allow the engine coolant and atf to mix. if the fluids mix, the engine and transmission may be permanently damaged and require replacement.

04/23/18 Transmission and Drivetrain NHTSA ID: 10134519 TSB ID: B17-027

Service bulletin - american honda is extending the warranty on the 9-speed transmission warmers to 10 years from the original date of purchase with unlimited mileage. this warranty covers vehicles where the engine coolant and atf mix becau

Further Reading

Models Mentioned in This Story

Acura TL

  • Rank 19th
  • PainRank 9.95
  • Complaints 350

Acura TLX

  • Rank 20th
  • PainRank 29.75
  • Complaints 203

OK, Now What?

Maybe you've experienced this problem. Maybe you're concerned you will soon. Whatever the reason, here's a handful of things you can do to make sure it gets the attention it deserves.

  1. File Your Complaint is a free site dedicated to uncovering problem trends and informing owners about potential issues with their cars. Major class action law firms use this data when researching cases.

    Add a Complaint
  2. Notify CAS

    The Center for Auto Safety (CAS) is a pro-consumer organization that researches auto safety issues & often compels the US government to do the right thing through lobbying & lawsuits.

    Notify The CAS
  3. Report a Safety Concern

    The National Highway Traffic Safety Administration (NHTSA) is the US agency with the authority to conduct vehicle defect investigations & force recalls. Their focus is on safety-related issues.

    Report to NHTSA