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August 14, 2019 Service bulletin

Ibau system repair guide for noise and air bleeding

Kia technical service bulletin TSBCHA098 for 2017-2019 Kia Niro, 2014-2019 Kia Optima Hybrid and 2018 Kia Niro PHEV and others.

Bulletin number
TSBCHA098
Component
Electrical system: integrated trailer brake control
Summary
TSBCHA098: IBAU SYSTEM REPAIR GUIDE FOR NOISE AND AIR BLEEDING - This bulletin provides the repair guide for the Integrated Brake Actuation Unit (iBAU) system on some 2014-2019MY Kia 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 108 complaints in the electrical category.

Vehicles covered

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