What to know
- The TCM is responsible for managing the transmission’s operation, and a reset can help resolve various problems.
- In this comprehensive guide, we’ll walk you through the steps on how to reset the TCM on Mitsubishi vehicles.
- Can I reset the TCM on my Mitsubishi without an OBD-II scanner.
If you’re experiencing transmission issues with your Mitsubishi vehicle, resetting the Transmission Control Module (TCM) can be a potential solution. The TCM is responsible for managing the transmission’s operation, and a reset can help resolve various problems. In this comprehensive guide, we’ll walk you through the steps on how to reset the TCM on Mitsubishi vehicles.
Symptoms of a Faulty TCM
Before proceeding with the reset, it’s important to identify if your TCM is indeed causing transmission issues. Here are some common symptoms:
- Transmission slipping or hesitation
- Gear shifting problems
- Check Engine Light illuminated
- Transmission fault codes stored in the vehicle’s computer
Steps to Reset TCM on Mitsubishi
Materials:
- OBD-II scanner or equivalent
Instructions:
1. Safety First: Ensure your vehicle is parked on a level surface and the parking brake is engaged.
2. Locate the OBD-II Port: Find the OBD-II diagnostic port under the dashboard, usually near the steering column.
3. Connect the Scanner: Plug the OBD-II scanner into the port.
4. Turn on the Ignition: Turn the ignition key to the “ON” position, but do not start the engine.
5. Access the TCM: Using the scanner, navigate to the TCM module. This may vary depending on the scanner you’re using.
6. Select Reset Option: Once in the TCM module, look for a reset or clear fault code option.
7. Confirm Reset: Follow the prompts on the scanner to confirm the TCM reset.
8. Clear Fault Codes: If possible, clear any stored fault codes related to the transmission.
9. Start the Engine: Start the engine and allow it to idle for a few minutes. This will allow the TCM to relearn its settings.
10. Test Drive: Take your vehicle for a test drive to ensure the transmission is functioning properly.
Troubleshooting Tips
- If the reset does not resolve the transmission issues, it may indicate a more serious problem. Consult a qualified mechanic for further diagnosis.
- Some Mitsubishi models may not have a reset option for the TCM. In such cases, disconnecting the battery for 15 minutes may reset the module.
- After resetting the TCM, it’s recommended to have the transmission fluid and filter inspected or replaced to ensure optimal performance.
Additional Considerations
- Resetting the TCM may affect other vehicle settings, such as shift points and fuel economy.
- If you’re not comfortable performing the reset yourself, it’s best to seek professional assistance.
- Resetting the TCM does not guarantee a permanent solution. If transmission issues persist, further repairs may be necessary.
FAQ
Q: Why would I need to reset the TCM on my Mitsubishi vehicle?
A: Resetting the TCM can help resolve transmission issues such as slipping, hesitation, and gear shifting problems.
Q: How often should I reset the TCM on my Mitsubishi?
A: There is no recommended interval for resetting the TCM. It should only be reset when experiencing transmission issues.
Q: Can I reset the TCM on my Mitsubishi without an OBD-II scanner?
A: Some Mitsubishi models may allow you to reset the TCM by disconnecting the battery for 15 minutes. However, using an OBD-II scanner is the recommended method.
Q: Will resetting the TCM affect my vehicle’s warranty?
A: Resetting the TCM should not void your vehicle’s warranty as long as it’s performed correctly.
Q: What are some common causes of TCM failure on Mitsubishi vehicles?
A: TCM failure can be caused by electrical faults, transmission fluid leaks, or software glitches.
