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Home >> Kia >> 2020 >> Optima Plug-In Hybrid EX >> Repair and Diagnosis >> Steering >> Steering Column >> Motor Driven Power Steering System (PHEV) >> Repair Procedures >> A/S Repair Procedures >> MDPS System A/S Workflow >> (4) MDPS Common Problems

(4) MDPS Common Problems

Case 1 Case 2 Case 3
G13362558Courtesy of KIA MOTORS AMERICA, INC.
G13362559Courtesy of KIA MOTORS AMERICA, INC.
G13362560Courtesy of KIA MOTORS AMERICA, INC.
Steering shaft noise Clock spring noise DAB/Wire noise
Replace steering shaft Replace clock spring Rearrange and replace DAB
Case 4 Case 5 Case 6
G13362561Courtesy of KIA MOTORS AMERICA, INC.
G13362562Courtesy of KIA MOTORS AMERICA, INC.
G13362563Courtesy of KIA MOTORS AMERICA, INC.
Multifunction switch noise MB nut mount defect M10 nut mount defect
Replace multifunction switch Retighten nut Retighten nut
Case 7 Case 8
G13362564Courtesy of KIA MOTORS AMERICA, INC.
G13362565Courtesy of KIA MOTORS AMERICA, INC.
Cowl top bolt mount defect Cowl bar nut mount defect
Retighten cowl top bolt Replace clock spring
CAUTION: Cautions to be taken when handling the MDPS (Motor Driven Power Steering)
  • Failure occurs due to internal damage because of the drop of and shock and excessive external force on the new partial component.

    → Be cautious of shock on the partial component and replace the damaged part (due to drop, etc.) with a new one.

  • When fastening the steering, excessive impact may result in twisting the center point of the torque sensor.
  • When removing/installing the connector the wiring may be damaged (deformed) by excessive external force.
  • Be cautious when storing and replacing the partial components under the abnormal temperature and humidity conditions.