GROUP

MODEL

Voluntary Service

2014-2017MY

Campaign

Forte & Forte Koup (YD)

NUMBER

DATE

SC238A

August 2024

VOLUNTARY SERVICE CAMPAIGN
BRAKE TUBE/LINE REINSPECTION/REPLACEMENT &
ANTI-CORROSION MATERIAL REAPPLICATION (SC238A)

SUBJECT:

This bulletin provides information to inspect and, if necessary, replace the brake tube(s)/line(s) for leakage
and apply additional anti-corrosion material to the underbody components on certain 2014-2017MY Forte
and Forte Koup (YD) vehicles produced from November 7, 2012 through April 19, 2017, originally sold or
currently registered in one of the 28 states where heavy amounts of road salt are used, that previously had
the cavity wax and anti-corrosion material application completed under SC238. Follow the procedure outlined
in this publication to inspect the brake line for brake fluid leakage and replace the brake line if necessary. In
addition, reapply a cavity wax and anti-corrosion undercoating spray in the indicated locations. Before
conducting the procedure, verify that the vehicle is included in the list of affected VINs.

The 28 states where heavy amounts of road salt are used are: AK, CT, DC, DE, IA, IL, IN, KS, KY, MA, MD, ME,
MI, MN, MO, ND, NE, NH, NJ, NY, OH, PA, RI, SD, UT, VT, WI and WV.

Note: Please remind all customers of the instructions in their Owner’s Manual (shown below), to regularly
have the underbody of their vehicles washed when road salt is being used in their area.

“Underbody maintenance”
“Corrosive materials used for ice and snow removal and dust control may collect on the underbody. If these
materials are not removed, accelerated rusting can occur on underbody parts such as the fuel lines, frame,
floor pan and exhaust system, even though they have been treated with rust protection. Thoroughly flush the
vehicle underbody and wheel openings with lukewarm or cold water once a month, after off-road driving and
at the end of each winter. Pay special attention to these areas because it is difficult to see all the mud and dirt.
It will do more harm than good to wet down the road grime without removing it. The lower edges of doors,
rocker panels, and frame members have drain holes that should not be allowed to clog with dirt; trapped
water in these areas can cause rusting.”

 NOTICE
To assure complete customer satisfaction, always remember to refer to KDealer+ Warranty
Coverage (validation) Inquiry Screen (Service → Warranty Coverage → Warranty Coverage Inquiry)
for a list of any additional campaigns that may need to be performed on the vehicle before returning
it to the customer.
A printed copy is for reference only; publication information can be updated at any time.
Always refer to KGIS for the latest information. After logging in kdealer.com, the newest technical
publications are listed in ‘Service Releases’ and has the latest service information that has been released.

Page 2 of 16

BRAKE TUBE/LINE REINSPECTION/REPLACEMENT
& ANTI-CORROSION MATERIAL REAPPLICATION (SC238A)

SUBJECT:

Brake Line Inspection Procedure:
1a.

Lift vehicle on hoist and remove the driver side
undercover (A).

A

1b.

Remove the protection cover (B).

B

2.

Inspect the entire length of the brake lines (L&R
Front to Back of the vehicle) for corrosion and/or
fluid leakage, especially in the brake line
retaining clip areas shown.

3.

Is there evidence of brake fluid leakage and/or
corrosion, especially around the brake line
retaining clips?
•

NO (OK): Proceed to the ‘Cavity Wax
Application

Procedure’

on page

8.

(Sample of light surface rust which may
be wiped off or removed light use of a
wire brush and air blowing.)
•

YES (NG): Proceed to the ‘Replacement
Procedure’ on page 3 to replace the
brake

line(s).

(Sample

of

severe

corrosion and brake fluid leak).
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: SC238A Forte (YD) August 2024

Page 3 of 16

BRAKE TUBE/LINE REINSPECTION/REPLACEMENT
& ANTI-CORROSION MATERIAL REAPPLICATION (SC238A)

SUBJECT:

Replacement Procedure:
1.

Remove the center muffler assembly (B) by
referring to “Engine Mechanical System →
Intake and Exhaust System → Muffler → Repair
procedures (Center Muffler)” in the applicable
Shop Manual on KGIS.

2.

Remove the auxiliary canister (C) by referring to
“Emission

Control

System

→

Evaporative

Emission Control System → Canister → Repair
procedures” in the applicable Shop Manual on
KGIS.

3.

Remove the fuel tank by referring to “Engine
Control/Fuel System → Fuel Delivery System →
Fuel

Tank

→

Repair

procedures”

in

the

applicable Shop Manual on KGIS.

CAUTION
Ensure

to

release

the

residual

pressure in the fuel line.

Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: SC238A Forte (YD) August 2024

Page 4 of 16
SUBJECT:

4.

BRAKE TUBE/LINE REINSPECTION/REPLACEMENT
& ANTI-CORROSION MATERIAL REAPPLICATION (SC238A)
Remove the brake tube line by disconnecting

K

the holder clips (K) in the locations shown.

K

Tightening torque for Brake Tube Nuts:
9.4 – 12.3 lb.ft (12.7 – 16.7 N.m)

K
K

K

K

5.

Separate the brake line from the fuel lines and remove the left and right side brake lines.

6.

Install the new brake lines in the reverse order of removal.

7.

Install all removed parts in reverse order of disassembly.

8.

Proceed to the Application Procedure to apply additional cavity wax and undercoating material before
lowering vehicle from hoist.

9.

Bleed brake system and adjust brake fluid levels by referring to “Brake System → Brake System →
Repair procedures → Brake System Bleeding” in the applicable Shop Manual on KGIS.

Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: SC238A Forte (YD) August 2024

Page 5 of 16
SUBJECT:

BRAKE TUBE/LINE REINSPECTION/REPLACEMENT
& ANTI-CORROSION MATERIAL REAPPLICATION (SC238A)

Anti-Corrosion Material Application:

 NOTICE
The procedure illustrated below is broken down into Preparation, Cleaning, Cavity Wax Application,
and Undercoat Application for the areas listed below. Images shown in the procedure are for
reference only purposes and will vary by model.

C
B

Side Undercover

A
Affected Areas for Application of Anti-Corrosion Material
A: Sub Frame / Front Lower Arms
B: Fuel / Brake Tube
C: Torsion Axle Complete
Other: Two-way Brake Tube Connector / Flexible Brake Hose / Fuel Tank Band / Parking Cable Bracket

WARNING
Do not eat, drink, or smoke while using these products. Keep away from heat, sparks, open flames,
hot surfaces, and other ignition sources. Avoid breathing mist, vapors, spray. Wash thoroughly after
handling. Wear protective gloves, protective clothing, eye protection, face protection.
Use with adequate ventilation. Respiratory: Level of exposure needs to be determined. If required,
use a particulate filter, a NIOSH-approved air purifying respirator with organic vapor cartridge or a
supplied air respirator. Filters should be replaced when breathing becomes labored. Cartridges
should be replaced when odors pass through. Refer to MSD sheets (Links: Cavity Wax,
Undercoating) for additional information and important warnings. All warnings provided by the
MSD sheet are hereby incorporated by reference.
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: SC238A Forte (YD) August 2024

Page 6 of 16

BRAKE TUBE/LINE REINSPECTION/REPLACEMENT
& ANTI-CORROSION MATERIAL REAPPLICATION (SC238A)

SUBJECT:

Preparation:
If vehicle undercarriage has significant road salt residue, an undercarriage carwash is recommended. Prior to
washing the undercarriage, document the vehicle’s undercarriage condition by taking two (2) photos and
submitting them with the warranty claim on form WRTY146 as specified in Warranty Bulletin 2024-54. After
an undercarriage wash, allow vehicle to dry or use compressed air. These procedures should ONLY be
performed in temperatures above 32°F (0°C). Ensure that all surfaces are completely dry and free of moisture
before applying cavity wax or undercoating.

Cleaning:
1.

On vehicles equipped with a splash shield, remove the splash shield prior to starting the procedure.

2.

Remove any rust scales or contaminants from the following components by hammering with a small
hammer and removing any surface rust with a wire brush.

CAUTION
• Do NOT strike with a hammer the fuel/brake lines or protector, parking brake cable, or
wiring harnesses. Use a wire brush only.
• Use care when striking with a hammer to not cause dimpling or damage.

Sub-Frame

Front Lower Arms (LH/RH)

Torsion Axle Complete

Fuel Tank Bands

Parking Brake Cable Brackets
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: SC238A Forte (YD) August 2024

Page 7 of 16
SUBJECT:

3.

BRAKE TUBE/LINE REINSPECTION/REPLACEMENT
& ANTI-CORROSION MATERIAL REAPPLICATION (SC238A)
After hammering and wire brushing is completed, use an air gun to blow compressed air into all service
holes and areas of the chassis components noted below to remove any additional rust scales or
contaminants.

 NOTICE
When using compressed air to remove rust scale and contaminants, be sure to rotate the air
nozzle inside the service holes to completely remove debris that may be lodged in cavities.
assembly.

Sub-Frame

Torsion Axle Complete

Front Lower Arms (LH/RH)

Fuel & Brake Tube Lines
Note: Be sure to remove all debris that may have
collected between the fuel/brake lines.

Two-way Brake Tube Connector

Flexible Brake Hose

Parking Brake Cable Brackets

Fuel Tank Bands

Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: SC238A Forte (YD) August 2024

Page 8 of 16

BRAKE TUBE/LINE REINSPECTION/REPLACEMENT
& ANTI-CORROSION MATERIAL REAPPLICATION (SC238A)

SUBJECT:

Cavity Wax Application:
WARNING
Do not eat, drink, or smoke while using this product. Keep away from heat, sparks, open flames, hot
surfaces, and other ignition sources. Avoid breathing mist, vapors, spray. Wash thoroughly after
handling. Wear protective gloves, protective clothing, eye protection, face protection.
Use with adequate ventilation. Respiratory: Level of exposure needs to be determined. If required,
use a particulate filter, a NIOSH-approved air purifying respirator with organic vapor cartridge or a
supplied air respirator. Filters should be replaced when breathing becomes labored. Cartridges
should be replaced when odors pass through. Refer to MSD sheets (Links: Cavity Wax,
Undercoating) for additional information and important warnings. All warnings provided by the
MSD sheet are hereby incorporated by reference.

 NOTICE
To prevent excessive vaporization of the cavity wax, use an inline air pressure regulator and adjust
the pressure to the wax gun to 70-90 PSI max. (Labels on older cavity wax bottles may still call for
90-120 PSI; disregard and adjust pressure to 70-90 PSI max).

 NOTICE
• This procedure should ONLY be performed in temperatures above 32°F (0°C). Ensure that all
surfaces are completely dry and free of moisture before applying cavity wax or undercoating.
• Using expired product may result in a poor spray pattern and/or insufficient cavity wax
application. Discard any such product (following all applicable local/state/federal regulations).
An expiration date has been added to the cavity wax so that any expired wax can be easily
identified and discarded. The undercoating has a manufacturing date code printed on the
bottom of the can. Undercoating should be discarded two years after the manufacturing date.
In

case

of

questions,

please

contact

the

Kia

Chemical

Program

through

https://www.kdealer.com.

1.

Using Quick Disconnect fittings suitable for the dealer’s air supply system, install the in-line pressure
regulator to a conveniently located wall air outlet and adjust the pressure to 70-90 PSI. Connect the air
hose to the regulator, and connect the other end of the hose to the Kia Injection Gun (SST 06700
10100), used to apply the cavity wax.

2a.

Insert the wax injection gun nozzle deeply into all service holes.

2b.

Then slowly pull out the nozzle while spraying the cavity wax inside of the components shown below.
Note: Rotate the nozzle while spraying to achieve an even coating of wax inside.

Click here to view a tutorial reference on wax application used in SC141.
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: SC238A Forte (YD) August 2024

Page 9 of 16
SUBJECT:

BRAKE TUBE/LINE REINSPECTION/REPLACEMENT
& ANTI-CORROSION MATERIAL REAPPLICATION (SC238A)

Sub-Frame

Front Lower Arms (LH/RH)

Torsion Axle Complete
3.

After applying cavity wax to components, use
the borescope (SST 1K545 4D200QQK) to check
for proper wax coating through the component
service holes.

4.

Power up and calibrate the display orientation
direction by gripping the probe and turning as
required. (Apply and align the 90-degree angle
adapter, as needed, for picture quality.)
Check the borescope

Check the reflector

camera’s power (1)

alignment position

1

Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: SC238A Forte (YD) August 2024

Page 10 of 16

BRAKE TUBE/LINE REINSPECTION/REPLACEMENT
& ANTI-CORROSION MATERIAL REAPPLICATION (SC238A)

SUBJECT: