Mercury Mountaineer Engine Control Computer

Replacement Parts

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Your Mountaineer delivers an ultra-smooth ride, but performance is dependent upon a balanced electrical system. Don't let a computer malfunction eat away at your savings. Instead, restore optimal fuel economy and engine performance with AutoZone's aftermarket ECM for Mercury Mountaineer.

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  •  | Page 1 of 4 |  
  • Part Number: 78-8475F
  • Warranty: 1 YR
  • Notes: Flash programming included in price. With module #ML2-8A1, 8A1A. Flash units require programming specific to the vehicle prior to shipping. Accurate VIN and mileage are required. Additional vehicle specific on-car programming must be performed AFTER installation to prevent drivability and starting issues.
  • Part Number: 78-1062F
  • Warranty: 1 YR
  • Notes: Flash programming included in price. With module #LBO-520. Customer-specific parameters such as courtesy light timing, etc may need to be reset after ECM is re-installed. Flash Units require programming specific to the vehicle prior to shipping. Accurate VIN and mileage are required. Delivered units are ready for installation with no further programming required.
  • Part Number: 78-6660
  • Warranty: 1 YR
  • Notes: With calibration #6-54G. Emission Calibration/Tear Tag On Front Door Jams, in Trunk, or Under Hood. Customer-specific parameters such as courtesy light timing, etc. May need to be reset after ECM is re-installed. Units are pre-programmed at the factory and ready for installation with no further programming required.
  • Part Number: 78-1253F
  • Warranty: 1 YR
  • Notes: All Calibrations with Module ID #8L2A-12B684-DA. Unit may require additional programming either ON or OFF the vehicle. Units must be flashed ON the vehicle. Vehicle specific on-car programming must be performed AFTER installation to prevent drivability and starting issues.
  • Part Number: 78-8476F
  • Warranty: 1 YR
  • Notes: Flash programming included in price. With module #ML2-8B1. Flash Units require programming specific to the vehicle prior to shipping. Accurate VIN and mileage are required. Additional vehicle specific on-car programming must be performed AFTER installation to prevent drivability and starting issues.
  • Part Number: 78-1229F
  • Warranty: 1 YR
  • Notes: All Calibrations With Module ID #8L2A-12B684-BA. Flash Units require programming specific to the vehicle prior to shipping. Accurate VIN and mileage are required. Additional vehicle specific on-car programming must be performed AFTER installation to prevent drivability and starting issues. Customer-specific parameters such as courtesy light timing, among others, may need to be reset after ECM is re-installed.
  • Part Number: 78-8592F
  • Warranty: 1 YR
  • Notes: Flash programming included in price. With module #NCD-100, 120. Customer-specific parameters such as courtesy light timing, etc. May need to be reset after ECM is re-installed. Flash units require programming specific to the vehicle prior to shipping. Accurate VIN and mileage are required. Additional vehicle specific on-car programming must be performed AFTER installation to prevent drivability and starting issues.
  • Part Number: 78-8599F
  • Warranty: 1 YR
  • Notes: Flash programming included in price. With module #NCD-121. Customer-specific parameters such as courtesy light timing, etc. May need to be reset after ECM is re-installed. Flash units require programming specific to the vehicle prior to shipping. Accurate VIN and mileage are required. Additional vehicle specific on-car programming must be performed AFTER installation to prevent drivability and starting issues.
  • Part Number: 78-1215F
  • Warranty: 1 YR
  • Notes: All Calibrations With Module ID #9L2A-12B684-AA. Flash Units require programming specific to the vehicle prior to shipping. Accurate VIN and mileage are required. Additional vehicle specific on-car programming must be performed AFTER installation to prevent drivability and starting issues. Customer-specific parameters such as courtesy light timing, among others, may need to be reset after ECM is re-installed.
  • Part Number: 78-8432F
  • Warranty: 1 YR
  • Notes: Flash programming included in price. With module #ML2-463. Flash Units require programming specific to the vehicle prior to shipping. Accurate VIN and mileage are required. Additional vehicle specific on-car programming must be performed AFTER installation to prevent drivability and starting issues.
  • Part Number: 78-2133F
  • Warranty: 1 YR
  • Notes: Flash Programming included in Price. Flash Units require programming specific to the vehicle prior to shipping. Accurate VIN and mileage are required. Additional vehicle specific on-car programming must be performed AFTER installation to prevent drivability and starting issues. PATS Module Requires Programming after ECM Install. With Module #VK2-L2631
  • Part Number: 78-1320F
  • Warranty: Limited Lifetime
  • Notes: All Calibrations with Module ID #9L2A-12B684-DA. Unit may require additional programming either ON or OFF the vehicle. Units must be flashed ON the vehicle. Vehicle specific on-car programming must be performed AFTER installation to prevent drivability and starting issues.
  •  | Page 1 of 4 |  

Our Mountaineer engine control computer is built for your specific model and payload capacity. It optimizes your fuel and ignition calibrations to give you more power without any lag. Drivers often misdiagnose ECM failure as a battery or starter problem because a faulty computer leads to an array of electrical issues. Whether you're experiencing difficult gear transitions or a jerky transmission, look to the Mountaineer engine control computer from AutoZone. Enjoy convenient online ordering with Free Shipping on $75 or more, as well Same Day Store Pickup (in most cases) to get you quickly recalibrated and back on the road.

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