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August 7, 2020 Service bulletin

Ibau system repair for noise and air bleeding

Kia technical service bulletin TSB_CHA098_R3 for 2014-2019 Kia Optima, 2015-2020 Kia Soul and 2017-2019 Kia Niro and others.

Bulletin number
TSB_CHA098_R3
Component
Service brakes, hydraulic: fluid
Summary
TECHNICAL SERVICE BULLETIN: IBAU SYSTEM REPAIR FOR NOISE AND AIR BLEEDING - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides the repair procedure for the Integrated Brake Actuation Unit (iBAU) system on some 2014-2019MY EV/Hybrid/Plug-In Hybrid vehicles listed (see table), which may exhibit a "honking" (Hissing) noise due to air remaining in the brake fluid system.

Owners of these vehicles have filed 331 complaints in the brakes category.

Vehicles covered

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