Left.W/O 2.0 LITER PHEV. w/active damping. w/o active cornering. w/o SVR. A shock absorber is a device that controls the spring oscillations when the vehicle goes over various road irregularities, so the vehicle's tires remain in contact with the road. In some cases, shock absorbers have a secondary function as a suspension limiter to prevent the suspension from either over-extending and/or over-compressing. Adaptive Control Suspension. Incl.Shock Mount. Suspension Strut and Coil Spring Assembly. and Coil Spring Assembly.