Ford and Daimler Chrysler Anti Lock Brake System Mercury Removal & Recycling Acceleration Sensors PDF Installation Manual

The Ecology Center with the assistance of the Automotive Recyclers of Michigan and Srapbusters (Wayne, Michigan) examined and removed ABS switches from vehicles produced in the highest volume which contain mercury acceleration sensors, Diamler-Chrysler Grand Cherokee and Ford Explorer. The purpose of the removal was to clarify the process and estimate time needed to recover these sensors.

Information regarding component locations was originally developed through the use of two commercial on line repair guides, All-Data and Mitchell. The ability of these systems to verify the presence and location of mercury containing ABS sensors for other models is unknown.

Sample Vehicles 1996 Grand Cherokee
Three 4-wheel drive Jeep models (Wrangler, Cherokee, Grand Cherokee) were produced with mercury acceleration sensors from 1990 to 2001 model years. The sensor contains two – 1 gram mercury switch capsules embedded in a solid plastic component. The entire component weighs 3 ounces (85 grams).

Removal Procedure
1. Remove rear seat.
2. Locate sensor on center drive tunnel. Cut carpet and roll back to access sensor.
3. Release clips to disconnect wiring harness. Remove two bolts to release the sensor.
Estimated Average Removal Time: 30 Minutes (assuming need to remove rear seat); 7 minutes (rear seat already removed)
Note: A variety of factors could complicate the removal process. Vehicles which have been involved in accidents which prevent easy access to interiors would require additional time. However, for vehicles with rear seats already removed removal times would be similar to those for Ford products.

1999 Ford Explorer
Three 4-wheel drive Ford models (Explorer, Navigator & Ranger) which are sold in the U.S. were produced for varying periods of time in the 1990s. The sensor contains three – 1 gram mercury switch capsules embedded in a solid plastic component. The entire component (with mounting bolts) weighs 4.25 ounces (120 grams).

Removal Procedure
1. Place vehicle on lift.
2. Locate sensor on left frame rail under the drivers seat.
3. Release clips to disconnect wiring harness. Remove two bolts to release the sensor.
Estimated Average Removal Time: 15 Minutes (assuming vehicle is not already on lift for fluid drains) This time would be halved (7 minutes) if done in conjunction with these operations.

Download Ford and Daimler Chrysler Anti Lock Brake System Mercury Removal & Recycling Acceleration Sensors PDF Installation Manual