my Ford F-150 Fourteenth Generation (2021-present) has a check engine light and won’t go into gear

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety.
• Ensure the vehicle is on a level surface and properly supported with jack stands.

2. Address Check Engine Light

1. Retrieve Error Codes

   • Use the OBD-II scanner to read the codes.
   • Document the codes for further analysis.

2. Clear Codes

   • Clear the codes using the scanner.
   • Reconnect the battery and start the engine to check if the light reappears.

3. Transmission Fluid Inspection

1. Check Fluid Level

   • Locate the transmission dipstick (if applicable) and remove it.
   • Wipe clean, reinsert, and remove to check fluid level.
   • Add the appropriate type of transmission fluid if low (typically Mercon LV for Ford).

2. Inspect Fluid Condition

   • Check for discoloration or burnt smell, which indicates the need for a fluid change.

4. Repair Wiring and Connectors

1. Inspect Wiring

   • Visually check all wiring and connectors related to the transmission.
   • Repair or replace any damaged wiring or connectors.

2. Test Continuity

   • Use a multimeter to test the continuity of the wires leading to the TCM.

5. Transmission Control Module (TCM) Replacement

1. Remove TCM

   • Locate the TCM, usually mounted near the transmission.
   • Disconnect the battery again for safety, then unplug the connectors.
   • Remove any screws or bolts securing the TCM and take it out.

2. Install New TCM

   • Position the new TCM in place and secure it with screws or bolts.
   • Plug in the connectors and reconnect the battery.