How to properly handle the Light Control Module in a Mercury Grand Marquis?

When servicing the Lighting Control Module (LCM), configure it to a scan tool prior to installing it. New LCM with DTC B2477 will clear by default after programming and will be in manufacturing mode (when cleared). Take out the required components, unconnect the connectors and attach the new module, then undo the steps that one undertook to remove the components.

How to remove and install the Light Control Module on Mercury Marauder?

In order to change the Lighting Control Module (LCM), you should disconnect the battery ground, lose the insulator around the left instrument panel, and the courtesy lamp. Where necessary, take out the accelerator pedal. Then unplug the electrical connections and take away the LCM. To install it, undo the process and test it.

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13 Light Control Modules found

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Mercury Control Module Part Number: 8S4Z-13C788-A
$158.60 MSRP: $261.56
You Save: $102.96 (40%)
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Product Specifications
- Other Name: Processor - Lighting Control; Lighting Control Module; Controller; Module; Module - Lighting Control
- Manufacturer Note: Module - Lighting Control
Fits the following Mercury Models:
- Mariner | 2008-2011 | Base, Hybrid, Premier | 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.5 L GAS, 6 Cyl 3.0 L FLEX, 6 Cyl 3.0 L GAS
- Milan | 2010-2011 | Base, Hybrid, Premier | 4 Cyl 2.5 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.5 L GAS, 6 Cyl 3.0 L FLEX
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Mercury Lighting Control Module Part Number: 5W7Z-13C788-AD
$368.33 MSRP: $630.00
You Save: $261.67 (42%)
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Product Specifications
- Other Name: Processor - Lighting Control
- Replaces: 5W7Z-13C788-AC, LCM-2, 5W7Z-13C788-AA
Fits the following Mercury Models:
- Grand Marquis | 2005 | GS, GSL, Limited Edition, LS, Ultimate Edition | 8 Cyl 4.6 L GAS
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Mercury Lighting Control Module Part Number: 4W7Z-13C788-BD
$367.37 MSRP: $610.00
You Save: $242.63 (40%)
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Product Specifications
- Other Name: Processor - Lighting Control
- Replaces: 4W7Z-13C788-BB, 4W7Z-13C788-BC, LCM-1
Fits the following Mercury Models:
- Grand Marquis | 2003-2004 | GS, LS, LSE | 8 Cyl 4.6 L GAS
- Marauder | 2003-2004 | Base | 8 Cyl 4.6 L GAS
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Mercury Module Part Number: 3W4Z-14B205-EA
$650.87 MSRP: $2214.67
You Save: $1563.80 (71%)
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Product Specifications
- Other Name: Body Control Module
Fits the following Mercury Models:
- Milan | 2006-2008 | Base, Premier | 4 Cyl 2.3 L GAS, 6 Cyl 3.0 L GAS
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Mercury Body Control Module Part Number: F7DZ-14B205-AB
Product Specifications
- Other Name: Control Unit
Fits the following Mercury Models:
- Sable | 1996-1997 | G, GS, LS | 6 Cyl 3.0 L GAS
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Mercury Lighting Control Module Part Number: XW7Z-13C788-BA
Product Specifications
- Other Name: Processor - Lighting; Module - Lighting Control
- Replaces: F8AZ-13C788-BA
Fits the following Mercury Models:
- Grand Marquis | 1998-2000 | GS, LS | 8 Cyl 4.6 L GAS
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Mercury Body Control Module Part Number: F8DZ-14B205-AA
Product Specifications
- Other Name: Control Unit
Fits the following Mercury Models:
- Sable | 1998 | GS, LS, LS Premium | 6 Cyl 3.0 L GAS
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Mercury Body Control Module Part Number: F87Z-14B205-JA
Product Specifications
- Other Name: Module - Multi Function; Module - Multi Function (Gem)
- Manufacturer Note: 4x4
Fits the following Mercury Models:
- Mountaineer | 1997-2001 | Base | 6 Cyl 4.0 L GAS, 8 Cyl 5.0 L GAS
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Mercury Lighting Control Module Part Number: F6AZ-13C788-AE
Product Specifications
- Other Name: Control Unit
- Manufacturer Note: Incl.police vehicle
Fits the following Mercury Models:
- Grand Marquis | 1995-1997 | GS, LS | 8 Cyl 4.6 L GAS
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Mercury Lighting Control Module Part Number: 8W7Z-13C788-C
Product Specifications
- Other Name: Processor - Lighting Control; Module - Lighting Control
- Manufacturer Note: Service Kit
- Replaces: 8W7Z-13C788-A, 8W7Z-13C788-B
Fits the following Mercury Models:
- Grand Marquis | 2008-2011 | GS, LS | 8 Cyl 4.6 L FLEX, 8 Cyl 4.6 L GAS
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Mercury Lighting Control Module Part Number: 1W7Z-13C788-BC
Product Specifications
- Other Name: Processor - Lighting Control
- Replaces: 1W7Z-13C788-BB
Fits the following Mercury Models:
- Grand Marquis | 2001-2002 | GS, LS | 8 Cyl 4.6 L GAS
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Mercury Lighting Control Module Part Number: FW1Z-13C788-ARM
$110.86 MSRP: $174.36
You Save: $63.50 (37%)
Product Specifications
- Other Name: Remanufactured Processor - Lighting Control
- Replaces: 6W1Z-13C788-BA, 7W1Z-13C788-A, LCM-3
Fits the following Mercury Models:
- Grand Marquis | 2006-2007 | GS, LS | 8 Cyl 4.6 L FLEX, 8 Cyl 4.6 L GAS
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Mercury Wiper Control Module, Front Part Number: 9E5Z-14B205-A
Product Specifications
- Other Name: Module - Multi Function (Gem); Wiper Motor Pulse Board Module, Front; Wiper Pulse Module; Module
- Position: Front
Fits the following Mercury Models:
- Milan | 2010-2011 | Base, Hybrid, Premier | 4 Cyl 2.5 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.5 L GAS, 6 Cyl 3.0 L FLEX

Mercury Light Control Module Parts and Q&A

Lighting Control Module
FW1Z-13C788-ARM
Q: How to properly handle the Light Control Module in a Mercury Grand Marquis?
A: When servicing the Lighting Control Module (LCM), configure it to a scan tool prior to installing it. New LCM with DTC B2477 will clear by default after programming and will be in manufacturing mode (when cleared). Take out the required components, unconnect the connectors and attach the new module, then undo the steps that one undertook to remove the components.
Lighting Control Module
4W7Z-13C788-BD
Q: How to remove and install the Light Control Module on Mercury Marauder?
A: In order to change the Lighting Control Module (LCM), you should disconnect the battery ground, lose the insulator around the left instrument panel, and the courtesy lamp. Where necessary, take out the accelerator pedal. Then unplug the electrical connections and take away the LCM. To install it, undo the process and test it.