Warning signs the Rear Lower Control Arm is failing:
- Clunking or rattling noises coming from the rear suspension, especially when going over bumps.
- Uneven tire wear on the rear tires.
- Vague or unstable handling, especially when cornering.
- The rear of the car feels loose or wanders.
- Visible damage to the control arm, such as bending or cracking.
How to test if this part is the problem vs other components:
- Visual Inspection: Carefully inspect the control arm for any signs of damage, like bends, cracks, or excessive rust. Also, check the bushings (rubber parts) for wear, cracking, or separation.
- Movement Test: With the car safely supported, try to move the control arm by hand. Excessive play or looseness indicates a problem.
- Pry Bar Test: Use a pry bar to gently apply pressure to the bushings. Look for excessive movement or separation.
- Listen Carefully: Have someone rock the car while you listen for noises coming from the suspension.
Common failure causes for this part:
- Normal wear and tear over time.
- Impact damage from potholes or accidents.
- Corrosion due to road salt and moisture.
- Deterioration of the rubber bushings.