Sensor Cluster (Accelerometer)
WARNING: This page is about a different car, the 2008 Mercury Mariner and 2008 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
The sensor cluster (also called the accelerometer) consists of several different sensors all packaged together in one unit. Four wheel drive (4WD) hybrid vehicles only use the longitudinal accelerometer portion of the sensor cluster. Front wheel drive (FWD) hybrid vehicles do not require the sensor cluster. The longitudinal accelerometer measures the acceleration corresponding to the force involved when the vehicle moves forward and rearward in the horizontal plane, along the centerline of the vehicle's front and rear wheels. This information is used by the ABS module to enhance the 4WD ABS.