How to Service and Repair the HVAC Control Module on Mercury Grand Marquis?

In order to service the HVAC module, depower the SRS. Take off finish panel and unscrew electrical connector. Unscrew the four screws of the HVAC-module and pull out the module. To install the module, remove the nuts, disconnect the vacuum harness and unplug wire-harness connectors to completely remove the module. Uninstall by going through the removal procedure in reverse.

How to service the HVAC control module on Mercury Grand Marquis?

In order to service the HVAC control module, you need to begin by unplugging the wire harness connector. Next, take out the screws to take out the blower motor speed control. The only way to install is to reverse the steps.

OEM Mercury Grand Marquis HVAC Control Module

Heater Control Assembly

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5 HVAC Control Modules found

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Mercury Grand Marquis Temperature Control Part Number: 3W7Z-19980-AA
Product Specifications
- Other Name: Control; HVAC Temperature Control Panel; Climate Control Module; Blower Control Switch; Heater Control; Dash Control Unit; Controller
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2003-2011 Mercury Grand Marquis | GS, GSL, Limited Edition, LS, LSE, Ultimate Edition | 8 Cyl 4.6 L FLEX, 8 Cyl 4.6 L GAS
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Mercury Grand Marquis Temperature Control Part Number: 1W7Z-19980-AA
Product Specifications
- Other Name: Control; Climate Control Module; Blower Control Switch; Dash Control Unit
- Manufacturer Note: WITH ATC
- Replaces: F8AZ-19980-BA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1998-2002 Mercury Grand Marquis | GS, LS | 8 Cyl 4.6 L GAS
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Mercury Grand Marquis Dash Control Unit Part Number: FOVY-19980-A
Product Specifications
- Other Name: Control; Climate Control Module
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1990-1991 Mercury Grand Marquis | GS, LS | 8 Cyl 5.0 L GAS
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Mercury Grand Marquis Temperature Control Part Number: F8AZ-19980-AA
Product Specifications
- Other Name: Panel Assembly - Control; HVAC Temperature Control Panel; Climate Control Module; Blower Control Switch; Heater Control; Dash Control Unit
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1998-2011 Mercury Grand Marquis | GS, GSL, Limited Edition, LS, LSE, Ultimate Edition | 8 Cyl 4.6 L FLEX, 8 Cyl 4.6 L GAS
View related parts
Mercury Grand Marquis Temperature Control Part Number: F6VZ-19980-AB
Product Specifications
- Other Name: Control; Climate Control Module; Blower Control Switch; Dash Control Unit
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1995-1997 Mercury Grand Marquis | GS, LS | 8 Cyl 4.6 L GAS

Mercury Grand Marquis HVAC Control Module

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Mercury Grand Marquis HVAC Control Module Parts and Q&A

Temperature Control
3W7Z-19980-AA
Q: How to Service and Repair the HVAC Control Module on Mercury Grand Marquis?
A: In order to service the HVAC module, depower the SRS. Take off finish panel and unscrew electrical connector. Unscrew the four screws of the HVAC-module and pull out the module. To install the module, remove the nuts, disconnect the vacuum harness and unplug wire-harness connectors to completely remove the module. Uninstall by going through the removal procedure in reverse.
Temperature Control
1W7Z-19980-AA
Q: How to service the HVAC control module on Mercury Grand Marquis?
A: In order to service the HVAC control module, you need to begin by unplugging the wire harness connector. Next, take out the screws to take out the blower motor speed control. The only way to install is to reverse the steps.