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Home >> Ford >> 2008 >> Expedition 4WD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission >> In-Vehicle Servicing >> Mechatronic Assembly >> Removal
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Mechatronic Assembly: Removal

NOTE: If a new or the existing mechatronic assembly is installed, the transmission control module (TCM) will need to be reflashed to the latest level calibration available.
  1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to JACKING AND LIFTING article.
    2. CAUTION: Do not pull on the wire harness to disconnect the connector or damage to the connector will occur.
  2. Disconnect the main transmission electrical harness by twisting the outer shell and pulling back on the connector.
    3. Fig 1: Locating Main Transmission Electrical Harness Connector
    GF0022492Courtesy of FORD MOTOR CO.
  3. Remove the fluid fill plug fluid level indicator assembly located on the passenger side front portion of the transmission case. Removal of the plug will relieve any vacuum that might have built up in the transmission. This will aid in allowing the fluid pan to be easily removed when the bolts are removed.
    4. Fig 2: Locating Fluid Fill Plug
    G04640118Courtesy of FORD MOTOR CO.
  4. Remove the transmission fluid pan and allow the fluid to drain.
    5. Fig 3: Locating Transmission Fluid Pan Bolts
    G04640119Courtesy of FORD MOTOR CO.
  5. Remove the fluid pan gasket.
    6. Fig 4: Locating Transmission Fluid Pan Gasket
    GF0022721Courtesy of FORD MOTOR CO.
  6. Remove and discard the transmission fluid filter.
    7. Fig 5: Locating Transmission Fluid Filter
    GF0022493Courtesy of FORD MOTOR CO.
  7. Pull the release tab and pull down on the bulkhead connector retainer.
    8. Fig 6: Locating Bulkhead Connector Retainer Tab
    GF0022494Courtesy of FORD MOTOR CO.
    CAUTION: Do not touch the electrical connector pins or the exposed solenoid tabs on the TCM. Electrostatic discharge may occur and may cause damage to the mechatronic unit.
  8. With the release tab down, pull the outer shell of the bulkhead electrical connector out of the TCM.
    9. Fig 7: Locating Outer Shell Of Bulkhead Electrical Connector
    GF0022495Courtesy of FORD MOTOR CO.
    CAUTION: Do not touch the electrical connector pins or the exposed solenoid tabs on the TCM. Electrostatic discharge may occur and may cause damage to the mechatronic unit.
  9. Pull the bulkhead electrical connector out of the transmission.
    10. Fig 8: Locating Outer Shell Of Bulkhead Electrical Connector
    GF0022496Courtesy of FORD MOTOR CO.
  10. Remove the 11 bolts from the mechatronic assembly and remove the mechatronic assembly.
    11. Fig 9: Locating Mechatronic Assembly Bolts
    GF0022731Courtesy of FORD MOTOR CO.
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