How to reset car transmission computer

## How to Reset Car Transmission Computer

The transmission computer, also known as the powertrain control module (PCM), is a vital component of your car’s transmission system. It is responsible for controlling the transmission’s shifting patterns, torque converter lockup, and other functions. When the transmission computer malfunctions, it can cause a variety of problems, including:

– Harsh or delayed shifting
– Transmission slipping
– Inability to shift gears
– Check engine light illumination

If you are experiencing any of these symptoms, it is possible that your transmission computer needs to be reset. Resetting the transmission computer can often resolve these problems and restore your car’s transmission to proper operation.

There are two main ways to reset the transmission computer:

– Using a scan tool: This is the most common method of resetting the transmission computer. A scan tool is a diagnostic device that can be used to access the car’s computer system and make changes to its settings. To reset the transmission computer using a scan tool, simply connect the scan tool to the car’s diagnostic port and follow the on-screen instructions.
– Disconnecting the battery: This method is less common, but it can also be effective in resetting the transmission computer. To reset the transmission computer by disconnecting the battery, simply disconnect the negative battery terminal from the battery and wait for 10 minutes. This will drain the power from the car’s computer system and reset the transmission computer.

Once you have reset the transmission computer, you will need to drive the car for a short period of time to allow the computer to relearn the transmission’s shift patterns. During this time, you may notice some unusual shifting behavior, but this is normal and should subside after a few miles.

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If you are not comfortable resetting the transmission computer yourself, you can take your car to a qualified mechanic to have it done.

### Benefits of Resetting the Transmission Computer

Resetting the transmission computer can provide a number of benefits, including:

– Improved shifting performance
– Reduced transmission slippage
– Increased fuel efficiency
– Fewer check engine light illuminations

If you are experiencing any problems with your car’s transmission, resetting the transmission computer is a simple and effective way to resolve them.

### Cautions

Before you reset the transmission computer, there are a few things you should keep in mind:

– Resetting the transmission computer will erase all of the learned data from the computer. This means that the computer will need to relearn the transmission’s shift patterns, which may result in some unusual shifting behavior for a short period of time.
– Resetting the transmission computer may not resolve all transmission problems. If you are experiencing severe transmission problems, you may need to take your car to a qualified mechanic for further diagnosis and repair.

## How to Reset Car Transmission Computer Using a Scan Tool

To reset the transmission computer using a scan tool, follow these steps:

1. Connect the scan tool to the car’s diagnostic port.
2. Turn on the scan tool.
3. Navigate to the “Powertrain” or “Transmission” menu.
4. Select the “Reset Transmission Computer” option.
5. Follow the on-screen instructions to complete the reset process.

## How to Reset Car Transmission Computer by Disconnecting the Battery

To reset the transmission computer by disconnecting the battery, follow these steps:

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1. Disconnect the negative battery terminal from the battery.
2. Wait for 10 minutes.
3. Reconnect the negative battery terminal to the battery.
4. Start the car and allow it to idle for a few minutes.

## Troubleshooting

If you are having trouble resetting the transmission computer, there are a few things you can try:

– Make sure that the scan tool is compatible with your car’s make and model.
– Check the scan tool’s user manual for specific instructions on how to reset the transmission computer.
– Make sure that the battery is disconnected for at least 10 minutes.
– If you are still having trouble resetting the transmission computer, you may need to take your car to a qualified mechanic for further diagnosis and repair.

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