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Caveat: please confirm the following information is correct for your vehicle and model before performing this procedure.
From ChatGPT:
Resetting the Ford 8F35 transmission involves clearing the adaptive learning values in the transmission control module (TCM). This can be done using a diagnostic tool or manually by following a specific procedure. Here's a general guide to both methods:
### Using a Diagnostic Tool
1. **Connect the Diagnostic Tool**: Connect an OBD-II diagnostic tool to the vehicle's OBD-II port.
2. **Access the Transmission Control Module (TCM)**: Navigate through the diagnostic tool's menu to find the TCM.
3. **Clear Adaptive Learning Values**: Look for an option like "Reset Transmission Adaptations" or "Clear Adaptive Values" and select it.
4. **Follow On-Screen Instructions**: Follow any prompts given by the diagnostic tool to complete the reset process.
### Manual Reset Procedure
1. **Ignition Cycle**:
- Turn the ignition key to the "On" position without starting the engine.
- Leave the ignition in the "On" position for at least 10 seconds.
- Turn the ignition key to the "Off" position and leave it off for at least 10 seconds.
- Repeat this cycle three times.
2. **Disconnect the Battery**:
- Turn off the engine and disconnect the negative battery terminal.
- Leave the battery disconnected for at least 30 minutes to allow the TCM to reset.
- Reconnect the negative battery terminal.
3. **Drive Cycle**:
- Start the vehicle and let it idle for a few minutes.
- Drive the vehicle at varying speeds, including city driving (stop-and-go) and highway driving, to allow the TCM to relearn the transmission shift patterns. This relearn process typically takes about 15-30 minutes of driving under different conditions.
### Note
- **Service Manual**: Always refer to your vehicle's service manual for specific procedures and safety precautions related to your particular model.
- **Professional Assistance**: If you are not comfortable performing these steps yourself, it's best to seek the assistance of a professional mechanic or dealership.
Resetting the TCM can help resolve some transmission issues by allowing the transmission to relearn its adaptive values, but it may not solve underlying mechanical problems. If transmission issues persist, further diagnosis and repair may be necessary.
Also see:
https://www.broncosportforum.com/forum/threads/ford-8f35-transmission-relearn-cycle.11467/
From ChatGPT:
Resetting the Ford 8F35 transmission involves clearing the adaptive learning values in the transmission control module (TCM). This can be done using a diagnostic tool or manually by following a specific procedure. Here's a general guide to both methods:
### Using a Diagnostic Tool
1. **Connect the Diagnostic Tool**: Connect an OBD-II diagnostic tool to the vehicle's OBD-II port.
2. **Access the Transmission Control Module (TCM)**: Navigate through the diagnostic tool's menu to find the TCM.
3. **Clear Adaptive Learning Values**: Look for an option like "Reset Transmission Adaptations" or "Clear Adaptive Values" and select it.
4. **Follow On-Screen Instructions**: Follow any prompts given by the diagnostic tool to complete the reset process.
### Manual Reset Procedure
1. **Ignition Cycle**:
- Turn the ignition key to the "On" position without starting the engine.
- Leave the ignition in the "On" position for at least 10 seconds.
- Turn the ignition key to the "Off" position and leave it off for at least 10 seconds.
- Repeat this cycle three times.
2. **Disconnect the Battery**:
- Turn off the engine and disconnect the negative battery terminal.
- Leave the battery disconnected for at least 30 minutes to allow the TCM to reset.
- Reconnect the negative battery terminal.
3. **Drive Cycle**:
- Start the vehicle and let it idle for a few minutes.
- Drive the vehicle at varying speeds, including city driving (stop-and-go) and highway driving, to allow the TCM to relearn the transmission shift patterns. This relearn process typically takes about 15-30 minutes of driving under different conditions.
### Note
- **Service Manual**: Always refer to your vehicle's service manual for specific procedures and safety precautions related to your particular model.
- **Professional Assistance**: If you are not comfortable performing these steps yourself, it's best to seek the assistance of a professional mechanic or dealership.
Resetting the TCM can help resolve some transmission issues by allowing the transmission to relearn its adaptive values, but it may not solve underlying mechanical problems. If transmission issues persist, further diagnosis and repair may be necessary.
Also see:
https://www.broncosportforum.com/forum/threads/ford-8f35-transmission-relearn-cycle.11467/
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