Anti-lock Braking System (ABS) G-Force Sensor Modules

General Procedure for Removing Mercury ABS G-Force Sensor Modules

Important Note: Only the ABS G-Force sensor modules should be removed and collected in the Switch Out containers. ABS wheel speed sensors in wheel units do not contain mercury and should not be removed. ABS G-Force sensor removal instructions for specific vehicle types are listed below.

  • Check for mercury ABS G-Force sensors in these cars and trucks:
    Audi 1987–1993 Audi 100/Avant
      1989–1995 Audi V8
      1987–1991 Audi 200
      1987–1992 Audi Coupe Quattro
      1987–1992 Audi 80/90
    Chrysler 1992–1996 Dodge Stealth 4WD
      1992 Eagle 200 GTX AWD
      1992–2001 Jeep Cherokee
      1993–2001 Jeep Grand Cherokee
      1992–1995 Jeep YJ
      1997–2003 Jeep TJ
    Ford 1993–1997 Ford Bronco
      1993–2002 Ford Explorer & Mazda Navajo
      1995–2001 Ford Ranger 4x4 & Mazda B-Series Pickup
      1997–2002 Mercury Mountaineer AWD
    Nissan 1996 Pathfinder 4x4
    Subaru 1990–1995 Legacy AWD with 5MT
      1993–1996 Impreza AWD with 5MT
  • Disconnect the battery.
  • Locate the ABS G-Force sensor module on the vehicle (varies on different vehicles). ABS G-Force sensor module locations include: the drive tunnel, below the rear seat on the floor pan, on the right front wheel apron, and on the left frame rail right below the driver.
  • Remove the ABS G-Force sensor module and place the entire sensor module in the Switch Out collection container. Replace the lid on the container.

NOTE: The ABS G-Force sensor module contains either two or three mercury switch capsules embedded in the casing. Do not attempt to remove the mercury switch capsules from the sensor module.

Diagram: Location of ABS mercury switches

List of vehicles that contain mercury ABS sensor modules 100 KB

Detailed removal instructions for mercury ABS sensor modules for specific vehicle types

176 KB
Switch removal demonstrations are available on the Video page  


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