Many MDX owners have reported a shudder or vibration when driving at speeds ranging from 35 to 45 MPH. Technicians have attributed this issue to a failed automatic transmission torque converter.
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 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.
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
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