If the SAS light on the dash of your Toyota 7 series lift is on and you have trouble getting traction (one wheel spinning), this is likely the culpret. It's job is to lock the rear axle into one position when turning at higher speeds to make the lift more stable. However, when it fails, it usually fails in the locked position. Thus, if you drive over uneven surfaces, you will end up with 3 wheels on the ground frequently (usually resulting in one wheel spinning without traction).
Weight: 12.2 lbs.