Even though Acura makes dependable vehicles, transmission slipping, poor shifting, shudder or skipping are some problems that Acura owners often face.
Acura transmission problems can start as early as 60,000 miles and are typically noticeable in cold weather or at startup.
Certain Acura transmission problems can be fixed by updating the transmission software while other issues may require complete transmission replacement.
If your Acura is still under factory warranty we recommend taking your vehicle to your nearest Acura dealer. If your Acura is out of warranty, read this article to become familiar with Acura transmission problems.
We will go over some basic things you need to check. You will also learn how to read fault codes from the Transmission Control Unit (TCU) | Powertrain Control Module (PCM) yourself.
Symptoms that you may notice:
When the transmission fluid level is low you will experience symptoms such as transmission slipping, no shift, jerking between gears or even a burning smell.
If your Acura is stuck in gear or you notice a delay in shifting, the first thing that you need to do is check transmission fluid level.
Do not drive an Acura with low transmission fluid. Driving with low transmission fluid damages the transmission.
The first sign that you may be having transmission problems is that the check engine light (CEL) comes on.
You can use a generic OBD-II scanner to retrieve CEL faults but those codes will not be as helpful as the codes that are stored in the Powertrain Control Module (PCM) module (also known as transmission control unit). A multi-system diagnostic scanner that works on Acura will be able to read fault codes from the PCM module.
A few Acura/Honda Transmission scanners that can help you diagnose your Acura/Honda transmission problems.
Locate diagnostic port under the dashboard on the driver's side. This is a 16-pin port. All 1996 and newer ACURA vehicles have this port.
Plugin your handheld scanner or Bluetooth adapter into the OBD2 port.
Turn key to position II. All the dashboard lights will turn on. Do not start the vehicle. If your ACURA has a Start/Stop button you will need to press the Start button without pressing the brakes.
Allow the OBD2 scanner to turn on and connect to your ACURA Engine Control Unit (ECU).
Read fault codes from the Transmission Control Unit. Write down the fault code and do research to find out more about the problem and possible solutions.
Once the problem is fixed you can go to Transmission menu > Erase Codes to reset the transmission fault codes.
A common problem that affects many Acura (such as TL and MDX) is transmission shudder and vibrations when driving. The vibrations can be most felt at highway driving speeds. This problem may be corrected by updating the software for the automatic transmission which has to be completed by the dealer.
Call the Acura dealer to provide them with your VIN number and ask if there is a Powertrain Control Module (PCM) software update available.
If a software update does not fix the shudder, there is a good chance that you have a bad torque convert which needs to be replaced.
To replace the torque converter the transmission needs to be removed which makes this repair very expensive. This is not an easy DIY fix that you can perform on your driveway.
The typical cost to change the torque converter is $1800-$3000.
Check engine light and D4 or D5 indicator on the dashboard on your instrument cluster may flash. In some cases, you may even hear a loud noise from the transmission.
When this happens, your Acura transmission will delay shifting between gears in upshifting and downshifting.
To fix this problem often a new torque converter is needed. Honda extended the warranty to fix this problem but older Acuras now fall outside of the warranty period. Read the fault codes from the Engine Control Unit.
Related codes: P0700, P0730, P0740, P0780, P1768
Another problem that can affect some Acuras is that the 3rd gear clutch pack may wear prematurely. If this happens, you may have issues upshifting or downshifting in 3rd gear.
Typical problems include flaring, slipping or no shifting to third gear at all. Check engine light (CEL / MIL) and gear D5 may also be flashing.
To fix this problem you will need to overhaul the transmission and replace the 3rd gear clutch. Similar symptoms can also be caused by a defective valve body.
Multiple solenoids are mounted on the valve body of the Acura transmission.
Due to age these solenoids can fail or get sticky causing erratic shifting. Sensors mounted on the valve body can get dirty or stop working if there is a short in the wire harness.
It is possible to overhaul the valve body instead of replacing it. Valve body repair kits are available and less expensive than replacing the whole valve body.
It can be scary if your Acura shifter won't move out of Park.
Not only are you stuck in a parking lot or garage but now you are worried about an expensive car repair.
The problem is typically caused by a bad brake light switch or the ignition switch is not releasing the shifter from the park.
As a temporary solution manually override the transmission and move the shifter in Drive.
Next, to the shifter, you will notice a small plastic cover that says Shifter Unlock. Use a small object such as a flat screwdriver or pen to remove the cover. Insert the screwdriver into the hole and move the shifter from Park to Drive.
Over the years Acura has issued multiple recalls for the automatic transmission.
Provide them with the VIN and ask if there are any recalls on the car. If there are, the dealer will fix your Acura free of charge.
List of a few Acura recalls and service bulletins.
A judder from the torque converter lock-up clutch may be felt while driving between 20–45 mph.
To minimize the opportunity for the judder to occur, a software update for the transmission is available.
No upshifts or downshifts, Slippage or flaring on upshifts or downshifts (primarily in 3rd gear), Erratic or excessively harsh shifts, Slow or delayed gear engagement.
The MIL is on and/or the D5 indicator is flashing
While driving, the D4 indicator (1999 3.2TL) or D5 indicator (all other models) on the instrument panel flashes. An abnormally loud noise from the transmission.
Extremely slow or delayed gear engagement, upshifts, or downshifts. Abnormal gear slippage during upshifts or downshifts. Erratic or excessively harsh shifting. Automatic transmission fluid (ATF) leaks.
Below is a list of the most used Acura transmission fluid and applicable vehicles. The following is for information only. The correct fluid for your Acura is listed in your owners manual.