PS560

Service Bulletin Details

Public Details for: PS560

Pitstop - integrated brake actuator unit (ibau) honk noise - this pitstop provides information regarding the 2017-2018my niro (de p/hev) and optima plug-in/hybrid (p/hev) vehicles, which may exhibit an intermittent ?Squeaking? And/or ?Honki


- 2018 - 2017 -

GROUP
Chassis
NUMBER
PS560
SUBJECT:
MODEL
2017-2018MY
Niro (DE P/HEV)
Optima Plug-in/
Hybrid (JF P/HEV)
DATE
September 2018
INTEGRATED BRAKE ACTUATOR UNIT
(IBAU) HONK NOISE
This Pitstop provides information regarding the 2017-2018MY Niro (DE P/HEV) and Optima
Plug-in/Hybrid (P/HEV) vehicles, which may exhibit an intermittent “squeaking” and/or
“honking” noise when applying the brakes rapidly. The ‘Integrated Brake Actuator Unit’ (IBAU)
should NOT be replaced for this concern. An IBAU brake bleed should be performed.

Perform the two-step ‘Active Hydraulic Boost’ (AHB) bleeding procedure by referring to the
“Brake System → Brake Bleeding Procedures” chapter in the applicable Shop Manual on
KGIS.
Audio Recording Example: Brake Pedal Honk Noise
Integrated Brake Actuator Unit (IBAU)
(DO NOT REPLACE for “squeak/honk” noise!)
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