my Ford F-150 Fourteenth Generation (2021-present) won’t shift into overdrive what should I do

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is turned off.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Check and Replace Transmission Fluid

• Sub-steps:
  1. Locate the transmission dipstick (if equipped) and remove it.
  2. Using a funnel, add the correct type of transmission fluid (refer to owner's manual).
  3. Start the engine and let it idle, then cycle through each gear while checking the fluid level again.
  4. If fluid is discolored or has a burnt smell, drain and replace it.
• Tools Required: Transmission fluid pump, 10mm socket, drain pan.
• Safety Warnings: Allow the engine to cool before working on the transmission to avoid burns.

3. Inspect and Adjust Transmission Range Sensor

• Sub-steps:
  1. Locate the transmission range sensor on the transmission.
  2. Disconnect the electrical connector from the sensor.
  3. Remove the mounting bolts and carefully take out the sensor.
  4. Check for wear or damage; replace if necessary.
  5. Reinstall the new or adjusted sensor and reconnect the electrical connector.
• Tools Required: Socket set, torque wrench.
• Safety Warnings: Ensure the vehicle is in park or neutral before performing this task.

4. Test Throttle Position Sensor (TPS)

• Sub-steps:
  1. Locate the TPS on the throttle body.
  2. Disconnect the electrical connector and use a multimeter to check for proper voltage output.
  3. If readings are outside manufacturer specifications, replace the TPS.
• Tools Required: Multimeter, screwdriver.
• Safety Warnings: Disconnect the battery before working on the throttle body.