On 2007 Acura MDX models with active damper control, it is recommended to consult an authorized dealership or qualified repair facility for rear shock absorber replacement. Before starting the removal process, loosen the rear wheel lug nuts and secure the front wheels with chocks. Then, raise the rear of the vehicle and support it on jack stands. Remove the rear wheels. For Pilot and MDX models, support the lower arm B with a floor jack placed under the coil spring pocket. Remove the stabilizer link, ABS speed sensor, and wire harness from the lower arm B. Remove the shock absorber upper mounting bolt and the shock absorber lower mounting nut and washer. If necessary, compress the shock and remove it. For Ridgeline models, special tools are required to compress the shock/coil spring assembly, so it is recommended to have the rear shocks installed by an authorized dealership or qualified repair facility. Remove the lower 
Control Arm B and the three flange bolts from the shock/coil spring assembly upper mounting base. Lower the shock/coil spring assembly from the vehicle. To install the shock absorber, reverse the removal procedure. For all models, make sure to tighten the mounting fasteners to the specified torque. Repeat the procedure for the other rear shock absorber. Finally, install the wheels and lug nuts, lower the vehicle, and tighten the lug nuts to the specified torque.