TSB: MDPS FLEXIBLE COUPLING REPLACEMENT - This bulletin is issued to provide information about the replacement of the flexible coupling in the MDPS motor of some vehicles which might experience a “knock†noise originating from the MDPS, when moving the steering wheel to right or left when the vehicle is stopped. This is caused by premature wear of the flexible coupling in the MDPS motor. If any “knock†noise from the MDPS occurs, replace the affected flexible coupling only with an improved one, following the Replacement Procedure below.