Kia Optima Hybrid: Rear Suspension System / Rear Lower Arm Repair procedures

Replacement
1.
Remove the rear wheel & tire.

Tightening torque:
88.3 ~ 107.9N.m(9.0 ~ 11.0kgf.m, 65.1 ~ 79.6lb-ft)

   
Be careful not to damage the hub bolts when removing the rear wheel & tire.
2.
Loosen the nut and then remove the rear stabilizer link (B) from the rear lower arm (A).

Tightening torque:
98.1 ~ 117.7N.m(10.0 ~ 12.0kgf.m, 72.3 ~ 86.8lb-ft)

3.
Loosen the bolt & nut and then remove the rear lower arm (A) from the rear axle.

Tightening torque:
137.3 ~ 156.9N.m(14.0 ~ 16.0kgf.m, 101.3 ~ 115.7lb-ft)

4.
Loosen the bolt & nut and then remove the rear lower arm (B) from the sub frame (A).

Tightening torque:
117.7 ~ 137.3N.m (12.0 ~ 14.0kgf.m, 86.8 ~ 101.3lb-ft)

5.
Installation is the reverse of removal.
   
Be careful not to cover the drain hole of lower arm with spring.
Inspection
1.
Check the bushing for wear and deterioration.
2.
Check the rear lower arm for deformation.
3.
Check the coil spring and spring pad for deterioration and deformation.
4.
Check for all bolts and nut.
Rear Upper Arm Repair procedures

Replacement 1. Remove the rear wheel & tire. Tightening torque: 88.3 ~ 107.9N.m(9.0 ~ 11.0kgf.m, 65.1 ~ 79.6lb-ft)     Be careful not to damage the hub bolts when removing the rear wheel ...

Rear Stabilizer Bar Repair procedures

Replacement 1. Remove the rear wheel & tire. Tightening torque: 88.3 ~ 107.9N.m (9.0 ~ 11.0kgf.m, 65.1 ~ 79.6lb-ft)     Be careful not to damage the hub bolts when removing the rear wheel ...

Other information:

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Transaxle Control Module (TCM) Description and Operation


Description Transaxle Control Module (TCM) is the automatic transaxle''s brain. The module receives and processes signals from various sensors and implements a wide range of transaxle controls to ensure optimal driving conditions for the driver. TCM is programmed for optimal response to any on-road situation. ...

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Engine Clutch Control Solenoid Valve (E/C_VFS) Specifications


Specifications Direct control VFS [E/C] Control type : Normal low type Control Pressure kpa(kgf/cm?, psi)9.81 ~ 500.14(0.1 ~ 5.1, 1.42 ~ 72.54)Current value (mA)50~850 Internal resistance (?)5.1 ...

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