Service bulletin TSB_CHA104

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10176071
Published by NHTSA	2020-06-03
Manufacturer's number	TSB_CHA104
Manufacturer's date	2020-05-22
NHTSA component	SERVICE BRAKES, HYDRAULIC; ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC)

NHTSA's summary

TECHNICAL SERVICE BULLETIN: BRAKE AIR BLEEDING PROCEDURE FOR ESC HONKING NOISE - This bulletin provides information regarding the brake air bleeding procedure for 2020MY~ Soul (SK3) vehicles equipped with Electronic Stability Control (ESC) module which may exhibit a "honk" noise when using Idle Stop and Go (ISG) and/or Hill Start Assist Control (HAC).

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Brakes, Driver assistance

Vehicles listed
KIA SOUL	2020, 2021

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
2020595	2020-12-03. Brakes

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
PS797	2025-12-18. Other. PITSTOP: TECHNICAL OPERATIONS: EXTERNAL DAMAGE TO ULTRASONIC SENSOR: This Pitstop provides information related to Parking Distance Warning (PDW) alerts and repairs involving ultrasonic sensors. The PDW system alerts the driver while parking, by calculating distance based on the difference in signal transmission and reception times between the vehicle (ultrasonic sensor) and an object. The membrane film of the ultrasonic sensor is used for object detention and can be damaged by stone chips or foreign substances while driving. Damage to the cover of the ultrasonic sensor can also lead to damage to the internal circuit. As a result of this external damage, the PDW system may not receive the proper signal from the ultrasonic sensor. In some cases, the system may cause a false alarm, no alert, or phantom warnings by a “Warning Lamp’ to be displayed on the cluster. The ultrasonic sensor membrane film should be always inspected for external damage and if any part replacement should be treated as a general repair, not as a warranty claim repair for this concern. (Please note that this Pitstop only applies to models/trims that are equipped with the ultrasonic sensors.)
TSB_CHA104_R2	2023-08-02. Service bulletin. TECHNICAL SERVICE BULLETIN: BRAKE AIR BLEEDING PROCEDURE FOR ESC HONKING NOISE AND SOFT/SPONGY BRAKE PEDAL - 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 information regarding the brake air bleeding procedure for 2020MY~ Soul (SK3) vehicles equipped with Electronic Stability Control (ESC) module which may exhibit a "honk" noise when using Idle Stop and Go (ISG) and/or Hill Start Assist Control (HAC).
TSB_CHA104_R1	2023-02-02. Service bulletin. TECHNICAL SERVICE BULLETIN: BRAKE AIR BLEEDING PROCEDURE FOR ESC HONKING NOISE - 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 information regarding the brake air bleeding procedure for 2020MY~ Soul (SK3) vehicles equipped with Electronic Stability Control (ESC) module which may exhibit a "honk" noise when using Idle Stop and Go (ISG) and/or Hill Start Assist Control (HAC).
TSB_ELE231_R3	2021-12-23. Service bulletin. TECHNICAL SERVICE BULLETIN: FRONT VIEW CAMERA REPLACEMENT FOR DTC C160449 & C160649 - 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 information on the inspection and replacement of the front camera on some vehicles. Due to an internal control chip concern inside the camera, the vehicle may exhibit a Forward Collision Avoidance Assist Warning Lamp (A) and/or Master Warning Lamp (B) with C160449 and/or C160649 codes. Certain systems may become temporarily disabled during occurrences: Smart Cruise Control (SCC), Lane Keep Assistance (LKA), Lane Departure Warning (LDW), Forward Collision-Avoidance Assist (FCA), Forward Collision Warning (FCW) and/or Driver Attention Warning (DAW).
TSB_ELE246_R1	2021-10-02. Service bulletin. TECHNICAL SERVICE BULLETIN: FRONT VIEW CAMERA REPLACEMENT AND SOFTWARE UPGRADE INSTALLATION - 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 procedure to update the software logic of the front view camera system (FR_CMR) on the vehicles listed below, when a new replacement Front View Camera installed with a part number ending in "SW0". NEW parts with a part number ending in "SW0" do not have the operating software upgrade installed. If the software upgrade is not installed, units will exhibit a warning light ON with Diagnostic Trouble Codes (DTCs) related to the front view camera. Some vehicles require recovery and recording the prior variant coding value before replacement.
TSB_ELE231_R2	2021-09-03. Service bulletin. TECHNICAL SERVICE BULLETIN: FRONT VIEW CAMERA REPLACEMENT FOR DTC C160449 & C160649 - 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 information on the inspection and replacement of the front camera on some vehicles. Due to an internal control chip concern inside the camera, the vehicle may exhibit a Forward Collision Avoidance Assist Warning Lamp (A) and/or Master Warning Lamp (B) with C160449 and/or C160649 codes. Certain systems may become temporarily disabled during occurrences: Smart Cruise Control (SCC), Lane Keep Assistance (LKA), Lane Departure Warning (LDW), Forward Collision-Avoidance Assist (FCA), Forward Collision Warning (FCW) and/or Driver Attention Warning (DAW).
PS704	2021-08-25. Service bulletin. PITSTOP: FRONT RADAR SENSOR MOUNTING INSPECTION (PS704) - This pitstop provides information regarding front radar sensor alignment on 2014MY and later vehicles that may exhibit a warning light ON related to radar sensor alignment errors in the Forward Collision-Avoidance Assist (FCA)/Smart Cruise Control (SCC) system.
TSB_ELE246	2021-08-25. Service bulletin. TECHNICAL SERVICE BULLETIN: FRONT VIEW CAMERA REPLACEMENT AND SOFTWARE UPGRADE INSTALLATION - This bulletin provides the procedure to update the software logic of the Front Camera (FR_CMR) system on the vehicles listed below, which have had a new replacement Front View Camera installed without software upgrade. If the S/W is not upgraded, units will exhibit a warning light ON with Diagnostic Trouble Codes (DTCs) related to the Front Camera (FR_CMR).
TSB_CHA098_R3	2020-09-03. Service bulletin. 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.
PS675	2020-09-03. Service bulletin. PITSTOP - BRAKE CALIPER LEAK INSPECTION - This PITSTOP provides information related to a brake caliper fluid/oil substance found on some Kia vehicles, due to possible excess assembly oil applied during assembly.