GROUP

NUMBER

ENGINE
MECHANICAL

Technical Service Bulletin

24-EM-011H

DATE

MODEL(S)

NOVEMBER 2024
SUBJECT:

ELANTRA (CN7)

INTEGRATED THERMAL MANAGEMENT (ITM) MODULE
HEAT EXCHANGE PORT REPLACEMENT

Description: Certain 2024MY Elantra (CN7) vehicles may produce a coolant leak from the Heat
Exchange Port on the Integrated Thermal Management (ITM) Module assembly. Follow the procedure
outlined in this TSB to replace the Heat Exchange Port at the ITM assembly.
Applicable Vehicles:
• 2024MY Elantra (CN7) vehicles equipped with 2.0L engine and produced from 10/05/2023 01/08/2024 (VINs starting with ‘KMH’)
Parts Information:
Part Name

Part Number

Figure

Remarks
Heat Exchange Port Assembly

25695-2J299
QTY: 1
Teflon Gasket
25696-2J299
QTY: 1
ITM Housing Gasket
25623-2J200
QTY: 1

ITM Service Kit
(25690 - 2J299QQH)

Funnel
25697-2J299
QTY: 1
Coolant Recovery Container
25698-2J299
QTY: 1
Insulation Cap
25699-2J299
QTY: 1

Pink Coolant

00232-19098

1 gallon can treat up to 14 vehicles.
(Used due to minimal loss of coolant
during ITM removal)

Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair

INTEGRATED THERMAL MANAGEMENT (ITM) MODULE HEAT
EXCHANGE PORT REPLACEMENT

SUBJECT:

Warranty Information:
Model

Op. Code

Operation

Op.
Time

Causal Part

Nature Cause
Code Code

Elantra
ITM Module Heat Exchange
40D015R3
1.5 M/H 25600-2J300
L31
ZZ4
(CN7)
Port Replacement
NOTE 1: Submit claim on Claim Entry Screen as “Campaign” type.
NOTE 2: Take a picture as directed within this TSB on page 5. Op times include VIN, Mileage, and
Repair validation photo(s) as outlined in the Digital Documentation Policy.
NOTE 3: The incident parts are subject to callback through the normal Warranty Technical Center
(WTC) parts return process. Claim is subject to debit if the part is not returned.
NOTE 4: If a part is found in need of replacement while performing this TSB and the affected part is
still under warranty, submit a separate claim using the same repair order. If the affected part is out of
warranty, submit a Prior Approval request for goodwill consideration prior to performing the work.
NOTE 5: Use of coolant in the amount of $3.00 will be reimbursed as sublet under the above OP
code.
Service Procedure:

STUI
This TSB includes Repair validation photos. Refer to the latest Warranty Digital Documentation
Policy for requirements.

Integrated Thermal Management (ITM) Module Removal
1.

Remove the Integrated Thermal Management
(ITM) Module (A).
Refer to Shop Manual:
• Engine Mechanical System > Cooling
System > Integrated Thermal
Management Module (ITM) >
Repair Procedures
A

TSB #: 24-EM-011H

Page 2 of 8

INTEGRATED THERMAL MANAGEMENT (ITM) MODULE HEAT
EXCHANGE PORT REPLACEMENT

SUBJECT:

i

Information

Use the supplied funnel and coolant
recovery container when draining the
coolant to avoid contamination. The
coolant will be reused.

Heat Exchange Port Replacement
1.

Install the supplied insulation cap (A) to the
ITM actuator connector (B).

i

Information

Remove the cap after replacement of the
heat exchange port.

A

2.

Loosen and remove the fixing screw bolts from
the heat exchange port (C).
Tightening Torque:

lb-ft

4.4

lb-in

53

N.m

5.9
C

TSB #: 24-EM-011H

Page 3 of 8

INTEGRATED THERMAL MANAGEMENT (ITM) MODULE HEAT
EXCHANGE PORT REPLACEMENT

SUBJECT:

3.

Position the heat exchange port (D) downward
and carefully detach it from the housing.

D

4.

Remove parts in this order:
A. Teflon gasket
B. Support
C. Wave Spring

i

Information

Reused parts: Support & Wave Spring
Replaced parts: Teflon Gasket & Heat
Exchange Port (O-ring Included)
*Ensure the marking on the Teflon
gasket is facing downward when
reinstalling.

5.

O-Ring

Teflon Gasket (A)

B

A

Reinstall parts in this order:
C. Wave Spring
B. Support
A. Teflon Gasket

Support (B)

Wave Spring (C)

C

O-Ring

NOTICE
When installing the O-ring (E) onto the
ITM housing, coat the entire O-ring with
coolant.

TSB #: 24-EM-011H

E

Page 4 of 8

SUBJECT:

INTEGRATED THERMAL MANAGEMENT (ITM) MODULE HEAT
EXCHANGE PORT REPLACEMENT

6.
OLD

STUI

NEW

Using STUI, take a photo of the New
and Old Heat Exchange Ports
(side-by-side) with the last 6 digits of
the VIN and the date of repair on a
piece of paper.
Upload the photo to STUI.

7.

Reinstall the heat exchange port to the ITM
housing (F).

F

8.

Reinstall the fixing screw bolts (G) into the
heat exchange port.
Tightening Torque:
lb-ft

4.4

lb-in

53

N.m

5.9
G

TSB #: 24-EM-011H

Page 5 of 8

SUBJECT:

9.

INTEGRATED THERMAL MANAGEMENT (ITM) MODULE HEAT
EXCHANGE PORT REPLACEMENT

Verify the Teflon gasket (H) is properly fitted.

H

10.

Remove the ITM housing gasket (I).
I

11.

Wipe off the excess coolant from the ITM
housing with a shop rag or towel (J).

TSB #: 24-EM-011H

J

Page 6 of 8

INTEGRATED THERMAL MANAGEMENT (ITM) MODULE HEAT
EXCHANGE PORT REPLACEMENT

SUBJECT:

12.

Reinstall the supplied ITM housing gasket from
the service kit in the order as shown in the
picture.

i

1

Information

Always use a new ITM rubber gasket.
2

Ensure that the ITM housing gasket is
properly installed and pushed into the
grooves of the ITM housing.
3

13.

Reinstall the ITM (K).
Tightening Torque:
lb-ft

5.1

lb-in

61

N.m

6.9

14.

Install remaining components in reverse order
of removal.

15.

Fill the engine coolant with the previously
drained coolant, adding new coolant as
necessary.

K

Refer to Shop Manual:
• Engine Mechanical System > Cooling
System > Coolant >
Repair procedures
16.

Start the engine and check for coolant
leakage.

TSB #: 24-EM-011H

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INTEGRATED THERMAL MANAGEMENT (ITM) MODULE HEAT
EXCHANGE PORT REPLACEMENT

SUBJECT:

17.

Adjust coolant level as necessary up to the
FULL line.

NOTICE
Be sure to follow the ITM Coolant Filling
Mode procedure. Failure to do so may
result in air pockets and overheating of
the engine.

18.

The service procedure is now complete.

TSB #: 24-EM-011H

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