Mercedes-Benz W210 rear control arm and subframe bushings

Yes. The outer mounts of the lower control arm, the so-called squeaking mounts, can be broken and cause the car to wander. Worn bushings and mounts should be replaced if the direction of the rear axle feels unstable.

1. Lift the rear of the car and remove the wheels. 2. Remove the front bolts of the subframe, which lets the rear drop about 10 cm. 3. Heat the area around the bushing, not to red heat, and pry the old bushing out with a chisel. 4. Clean the surfaces, grease the new bushing and press it into place. 5. Fit the bolts. No special tools are needed; heating makes removal easier.

The rear spring does not need to be removed, so no spring compressor is needed. Remove the wheel and the outer 22 mm bolt of the lower control arm, heat the eye of the mount and knock the mount out with a 24 mm socket. The new mount is installed with a 32 mm socket. The control arm bolts are tightened with the car on its wheels.

The inside of the lower control arm can rust after the drain hole becomes blocked, and the rust does not show on the outside. A rusted arm can snap suddenly, which is a safety risk. Have a workshop assess the condition of the arm and any repair.