How to service and repair the Engine Control Module on Mercury Mountaineer?

The first step to work on the Engine Control Module requires removing the battery ground cable. You must remove the three Powertrain Control Module (PCM) electrical connectors as step two. To begin unfasten the two nuts holding the module in place and extract the glovebox door assembly. Toward the installation step, uninstall the bolt to extract the PCM bracket along with the PCM unit itself. Service and repair of the Engine Control Module requires following the exact reverse process of removal.

How to remove and replace the Engine Control Module (PCM) for all on Mercury Mountaineer?

The PCM removal process for all vehicles does not demand new keys when replacing the Engine Control Module. Start the procedure by obtaining the module configuration following the instructions of the Programmable Module Installation procedure. The air cleaner must be removed before beginning the work on vehicles that have a 4.6L (3V) engine. The procedure starts by disconnecting the RH front wheel speed sensor electrical connector followed by removing nut(s) until the A/C tube bracket(s) and wiring harness can be set aside. The installation begins with disconnecting the PCM connectors before removing the bolts that secure the PCM. Position the PCM along with its bolts then secure them at 10 Nm torque (89 lb-in). Connect the electrical connectors of PCM and then reposition the wiring harness with A/C tube bracket(s) before securing nut(s) tightly to 7 Nm (62 lb-in) while ensuring the RH front wheel speed sensor electrical connector remains connected. Install the air cleaner on vehicles running with a 4.6L (3V) engine. The last stage includes getting the module back to its original state through the Programmable Module Installation procedure while also conducting a PATS reprogram by performing the Parameter Reset procedure.

OEM Mercury Mountaineer Engine Control Module

Engine Control Computer

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30 Engine Control Modules found

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Mercury Mountaineer ECM Part Number: 4U7Z-12A650-LFARM
$650.10 MSRP: $960.00
You Save: $309.90 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Reman Module - Engine Control - EEC; Engine Control Module (ECM); Engine Control Module
- Replaces: 4L2Z-12A650-UG, 4U7Z-12A650-JGD, 4U7Z-12A650-LGA, 4U7Z-12A650-LFA, 4L2Z-12A650-UH, 4U7Z-12A650-JDD, 4U7Z-12A650-LCA, 5U7Z-12A650-GHA, 5L2Z-12A650-AMB, 5U7Z-12A650-BNA, 4U7Z-12A650-LDA, 4U7Z-12A650-JDE, 4U7Z-12A650-LHA, 5U7Z-12A650-GGA, 4U7Z-12A650-LNA, 4U7Z-12A650-LEA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2004-2005 Mercury Mountaineer | Base, Convenience, Luxury, Premier | 6 Cyl 4.0 L FLEX, 6 Cyl 4.0 L GAS
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Mercury Mountaineer ECM Part Number: 5U7Z-12A650-GKARM
$576.98 MSRP: $851.67
You Save: $274.69 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Reman Module - Engine Control - EEC; Engine Control Module (ECM); Engine Control Module
- Replaces: 4U7Z-12A650-LJA, 5L2Z-12A650-ABB, 5U7Z-12A650-GKA, 4U7Z-12A650-HZB, 4U7Z-12A650-HZC, 5L2Z-12A650-ABA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005 Mercury Mountaineer | Convenience, Luxury, Premier | 8 Cyl 4.6 L GAS
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Mercury Mountaineer ECM Part Number: 6L2Z-12A650-BPBRM
$633.79 MSRP: $926.50
You Save: $292.71 (32%)
Product Specifications
- Other Name: Reman Module - Engine Control - EEC; Engine Control Module (ECM); Engine Control Module
- Replaces: 6L2Z-12A650-AZD, 6U7Z-12A650-KLC, 6L2Z-12A650-CAA, 6U7Z-12A650-KLA, 6L2Z-12A650-CAB, 6U7Z-12A650-KLD, 6L2Z-12A650-BPB
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2006-2008 Mercury Mountaineer | Base, Luxury, Premier | 6 Cyl 4.0 L GAS, 8 Cyl 4.6 L GAS
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Mercury Mountaineer ECM Part Number: 9L2Z-12A650-HHRM
Product Specifications
- Other Name: Reman Module - Engine Control - EEC; Engine Control Module (ECM); Engine Control Module
- Replaces: 9L2Z-12A650-HHNP
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2009-2010 Mercury Mountaineer | Premier | 8 Cyl 4.6 L GAS
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Mercury Mountaineer ECM Part Number: 7L2Z-12A650-PARM
Product Specifications
- Other Name: Reman Module - Engine Control - EEC; Engine Control Module (ECM); Engine Control Module
- Replaces: 6L2Z-12A650-BDK, 6L2Z-12A650-BDL, 6U7Z-12A650-KH, 6U7Z-12A650-KG, 7L2Z-12A650-PA, 7U7Z-12A650-DJC, 7U7Z-12A650-DJB
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2010 Mercury Mountaineer | Premier | 8 Cyl 4.6 L GAS
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Mercury Mountaineer ECM Part Number: 8L2Z-12A650-RDRM
$748.95 MSRP: $1103.33
You Save: $354.38 (33%)
Product Specifications
- Other Name: Reman Module - Engine Control - EEC; Engine Control Module (ECM); Engine Control Module
- Replaces: 8U7Z-12A650-GB, 8U7Z-12A650-GD, 8L2Z-12A650-KC, 8L2Z-12A650-RD, 8U7Z-12A650-GA, 8L2Z-12A650-RC, 8L2Z-12A650-RB, 8U7Z-12A650-BFA, 8U7Z-12A650-GC
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2008-2010 Mercury Mountaineer | Premier | 8 Cyl 4.6 L GAS
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Mercury Mountaineer ECM Part Number: 1L2Z-12A650-SD
Product Specifications
- Other Name: Module - Engine Control; Engine Control Module
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2002-2003 Mercury Mountaineer | Base | 6 Cyl 4.0 L FLEX, 6 Cyl 4.0 L GAS
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Mercury Mountaineer ECM Part Number: 1U7Z-12A650-BPBRM
Product Specifications
- Other Name: Module - Engine Control; Engine Control Module
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2002-2004 Mercury Mountaineer | Base, Premier | 8 Cyl 4.6 L GAS
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Mercury Mountaineer ECM Part Number: 1U7Z-12A650-CYDRM
Product Specifications
- Other Name: Module - Engine Control; Engine Control Module
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2002-2003 Mercury Mountaineer | Base | 6 Cyl 4.0 L FLEX, 6 Cyl 4.0 L GAS
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Mercury Mountaineer ECM Part Number: 3L2Z-12A650-AXCRM
Product Specifications
- Other Name: Reman Module - Engine Control - EEC; Engine Control Module (ECM); Engine Control Module
- Replaces: 2L2Z-12A650-HE, 3L2Z-12A650-AYC, 2U7Z-12A650-CHA, 3U7Z-12A650-BKB, 3U7Z-12A650-BSB, 3U7Z-12A650-BLB, 2L2Z-12A650-PE, 3U7Z-12A650-BRB, 2U7Z-12A650-CJA, 3L2Z-12A650-AXB, 3L2Z-12A650-AXC, 3L2Z-12A650-AYB
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2002-2003 Mercury Mountaineer | Base | 8 Cyl 4.6 L GAS
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Mercury Mountaineer ECM Part Number: 3U7Z-12A650-DACRM
Product Specifications
- Other Name: Reman Module - Engine Control - EEC; Engine Control Module (ECM); Engine Control Module
- Replaces: 2U7Z-12A650-EHC, 3U7Z-12A650-BGE, 3U7Z-12A650-NCA, 3L2Z-12A650-XE, 3U7Z-12A650-NBA, 3U7Z-12A650-BDD, 3U7Z-12A650-DCB, 3U7Z-12A650-BED, 2U7Z-12A650-EZB, 2U7Z-12A650-EGC, 3U7Z-12A650-DBC, 2L2Z-12A650-ME, 3L2Z-12A650-TE, 2U7Z-12A650-EJB, 2U7Z-12A650-FBA, 3L2Z-12A650-UD, 3L2Z-12A650-UE, 2U7Z-12A650-FAB, 3U7Z-12A650-BJD, 3U7Z-12A650-BFC, 3U7Z-12A650-DAC, 3U7Z-12A650-BHE
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2003 Mercury Mountaineer | Base | 6 Cyl 4.0 L FLEX
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Mercury Mountaineer PCM Part Number: 4U7Z-12A650-JLDRM
Product Specifications
- Other Name: Reman Module - Engine Control - EEC; Engine Control Module (ECM); Engine Control Module; ECM
- Replaces: 4U7Z-12A650-JJD, 5L2Z-12A650-AGB, 4U7Z-12A650-AUD, 4U7Z-12A650-JPD, 4U7Z-12A650-JSD, 4U7Z-12A650-JLD, 5L2Z-12A650-AJB, 5U7Z-12A650-BKA, 5U7Z-12A650-BHA, 4U7Z-12A650-JFD, 4U7Z-12A650-JHD
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2006-2010 Mercury Mountaineer | Base, Convenience, Luxury, Premier | 6 Cyl 4.0 L GAS, 8 Cyl 4.6 L GAS
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Mercury Mountaineer ECM Part Number: 5L2Z-12A650-ACBRM
Product Specifications
- Other Name: Reman Module - Engine Control - EEC; Engine Control Module (ECM); Engine Control Module
- Replaces: 4U7Z-12A650-HYB, 5L2Z-12A650-ACB, 5L2Z-12A650-ACA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2004-2005 Mercury Mountaineer | Base, Convenience, Luxury, Premier | 8 Cyl 4.6 L GAS
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Mercury Mountaineer Computer Part Number: F6PZ-12A650-ERA
Product Specifications
- Other Name: Module - Engine Control; Engine Control Module; PCM; ECM
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1997-2000 Mercury Mountaineer | Base | 8 Cyl 5.0 L GAS
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Mercury Mountaineer ECM Part Number: F7PZ-12A650-AUB
Product Specifications
- Other Name: Module - Engine Control; Engine Control Module
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1998-2000 Mercury Mountaineer | Base | 6 Cyl 4.0 L GAS
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Mercury Mountaineer PCM Part Number: F8PZ-12A650-DGA
Product Specifications
- Other Name: Module - Engine Control; Engine Control Module; ECM
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1998 Mercury Mountaineer | Base | 6 Cyl 4.0 L GAS
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Mercury Mountaineer Computer Part Number: F8PZ-12A650-DNA
Product Specifications
- Other Name: Module - Engine Control; PCM
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1998 Mercury Mountaineer | Base | 8 Cyl 5.0 L GAS
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Mercury Mountaineer Computer Part Number: XL2Z-12A650-PD
Product Specifications
- Other Name: Module - Engine Control; Engine Control Module; PCM; ECM
- Manufacturer Note: Powertrain Control Module (PCM) #XL2F 12A650-PD (EEC-V)TYPE:ML2-8A1A (REPROGRAMMABLE)
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2001, 1999 Mercury Mountaineer | Base | 8 Cyl 5.0 L GAS
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Mercury Mountaineer PCM Part Number: XL5Z-12A650-AZB
Product Specifications
- Other Name: Module - Engine Control; Engine Control Module (ECM)
- Manufacturer Note: Powertrain Control Module (PCM) #XL5F 12A650-AZB-(EEC-V) TYPE:ML2-833A-(REPROGRAMMABLE)
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2000-2001 Mercury Mountaineer | Base | 8 Cyl 5.0 L GAS
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Mercury Mountaineer ECM Part Number: YL2Z-12A650-LB
Product Specifications
- Other Name: Module - Engine Control; Engine Control Module
- Manufacturer Note: Powertrain Control Module(PCM) #YF2F 12A650-LB-(EEC-V) TYPE:ML2-8B1A (REPROGRAMMABLE)
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2001 Mercury Mountaineer | Base | 6 Cyl 4.0 L GAS

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Mercury Mountaineer Engine Control Module

OEM Engine Control Module boasts unmatched quality. Each part goes through full quality checks. They adhere to Mercury's official factory standards. These steps remove flaws and inconsistencies. So you can get Engine Control Module with long life and a perfect fit. Come to our website and find genuine Mercury Mountaineer parts. We keep a wide inventory of OEM Mountaineer parts at the highly affordable prices. It's easy to search, compare, and pick what you need. You'll love the clear info and simple checkout. We offer top-rated customer service, and we reply fast. We also ship promptly to ensure your order arrives on time.

Another essential feature of the Mercury Mountaineer is the Engine Control Module or the commonly known ECM, this unit contributes a lot to the general reliability and performance of the Mercury Mountaineer vehicle. Located at the heart of the engine, the ECM is in charge of the electronic control of such engine parameters as the air-fuel mixture, the ignition timing, and the idle speed all of which is controlled by the data received from on-board sensors. This fine management controls not only the engine parameters to the premier advantage but also enhances over-system efficiency and safety, so that the Mercury Mountaineer is a worthy SUV option. This ECM is suited for Mountaineer vehicles manufactured between the years 1996 up to 2010 when the production of this vehicle was stopped Compatible with many Mountaineer models, this Engine Control Module has been upgraded through successive generations and currently boasts of microprocessor-based systems that even contain the transmission functions, thereby controlling the different systems in a vehicle in a co-ordinated way. As a luxury sport utility vehicle, the Mercury Mountaineer is recognised for its lavish interior as well as excellent performance, features that are made possible by the ECM. Some of the instance parameters of Mercury Mountaineer Engine Control Module include its capacity to vary the responses varying from time to time in a manner that enhances responsiveness while driving. Besides, the availability of both the new ECMs and the remanufactured ones means that the owners of the Mercury Mountaineer will always have the options that will help them to achieve the desired level of reliability and performance. In general, Mercury Mountaineer Engine Control Module is a unique product at automotive market for its crucial function to improve car efficiency, safety and performance that makes Mercury Mountaineer unthinkable SUV.

Mercury Mountaineer Engine Control Module Parts and Q&A

ECM
1L2Z-12A650-SD
Q: How to service and repair the Engine Control Module on Mercury Mountaineer?
A:
The first step to work on the Engine Control Module requires removing the battery ground cable. You must remove the three Powertrain Control Module (PCM) electrical connectors as step two. To begin unfasten the two nuts holding the module in place and extract the glovebox door assembly. Toward the installation step, uninstall the bolt to extract the PCM bracket along with the PCM unit itself. Service and repair of the Engine Control Module requires following the exact reverse process of removal.
ECM
6L2Z-12A650-BPBRM
Q: How to remove and replace the Engine Control Module (PCM) for all on Mercury Mountaineer?
A:
The PCM removal process for all vehicles does not demand new keys when replacing the Engine Control Module. Start the procedure by obtaining the module configuration following the instructions of the Programmable Module Installation procedure. The air cleaner must be removed before beginning the work on vehicles that have a 4.6L (3V) engine. The procedure starts by disconnecting the RH front wheel speed sensor electrical connector followed by removing nut(s) until the A/C tube bracket(s) and wiring harness can be set aside. The installation begins with disconnecting the PCM connectors before removing the bolts that secure the PCM. Position the PCM along with its bolts then secure them at 10 Nm torque (89 lb-in). Connect the electrical connectors of PCM and then reposition the wiring harness with A/C tube bracket(s) before securing nut(s) tightly to 7 Nm (62 lb-in) while ensuring the RH front wheel speed sensor electrical connector remains connected. Install the air cleaner on vehicles running with a 4.6L (3V) engine. The last stage includes getting the module back to its original state through the Programmable Module Installation procedure while also conducting a PATS reprogram by performing the Parameter Reset procedure.