Front thrust arm and control arm bushings can crack and sometimes tear completely. If this is not repaired quickly, damage to the front subframe unit will occur, which is very expensive to repair. Updated control arms (that prevent damage to the subframe when the bushings wear out) are available.
Front Thrust Arm and Control Arm Bushing Can Crack or Tear on Mercedes-Benz S430 4MATIC
Average mileage: 120,000 (120,000–120,000)
6 people reported this problem
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Brought car in for service at MB dealership and was told needed to replace control arms bushings. Expensive repair.