NHTSA ID Number: 11017475
Manufacturer Communication Number: 25-EM-003H
TSB/Document Date: 2025-05-02
Summary
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.
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TSB/Document ID: 25-EM-003H
- Identifier the manufacturer uses to identify the communication and the way it can be located by those searching for it.
Replacement Service Bulletin Number:
- Replacement service bulletin number.
MFR Communication Date: 2025-04-30
- Date the communication was disseminated by the manufacturer.
MFR Internal Campaign ID/Software Version:
- Manufacturer's unique identifier for the service campaign if this communication is a related one.
Communication Type: Service Bulletin/Repair Instructions
- Service Bulletin / Repair Instructions - Service Campaign - Warranty Program / Extension - Over The Air - Emissions - Other
NHTSA Components: ENGINE
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MFR Component System:
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MFR Component Subsystem:
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GROUP NUMBER ENGINE MECHANICAL Technical Service Bulletin DATE MODEL(S) APRIL 2025 SUBJECT: 25-EM-003H ELANTRA (CN7) INTEGRATED THERMAL MANAGEMENT (ITM) MODULE HEAT EXCHANGE PORT REPLACEMENT This TSB supersedes 24-EM-011H to expand the range of production dates, update the warranty information, and add a notice for torque fastening on pages 1-2. 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 08/07/2023 – 04/17/2024 (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 Elantra (CN7) 40D015R3 ITM Module Heat Exchange Port Replacement Op. Time Causal Part 1.5 M/H 25600-2J300 Nature Cause Code Code L31 ZZ4 NOTE 1: Submit claim on Claim Entry Screen as “Campaign” type. NOTE 2: Take a picture of the warrantable defect. Op times include VIN, Mileage, and Repair justification 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: DIGITAL DOCUMENTATION This TSB includes repair justification photos. Refer to the latest Warranty Digital Documentation Policy for requirements. NOTICE Applying the recommended torque to all fasteners is essential to reduce potential issues from occurring after the service procedure. TSB #: 25-EM-003H Page 2 of 8 INTEGRATED THERMAL MANAGEMENT (ITM) MODULE HEAT EXCHANGE PORT REPLACEMENT SUBJECT: 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 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 TSB #: 25-EM-003H Page 3 of 8 INTEGRATED THERMAL MANAGEMENT (ITM) MODULE HEAT EXCHANGE PORT REPLACEMENT SUBJECT: 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 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 O-Ring 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. TSB #: 25-EM-003H Teflon Gasket (A) A B Support (B) Wave Spring (C) C Page 4 of 8 INTEGRATED THERMAL MANAGEMENT (ITM) MODULE HEAT EXCHANGE PORT REPLACEMENT SUBJECT: 5. Reinstall parts in this order: C. Wave Spring B. Support A. Teflon Gasket O-Ring NOTICE When installing the O-ring (E) onto the ITM housing, coat the entire O-ring with coolant. 6. DIGITAL DOCUMENTATION E OLD 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 TSB #: 25-EM-003H Page 5 of 8 SUBJECT: 8. INTEGRATED THERMAL MANAGEMENT (ITM) MODULE HEAT EXCHANGE PORT REPLACEMENT 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 9. Verify the Teflon gasket (H) is properly fitted. H 10. Remove the ITM housing gasket (I). I TSB #: 25-EM-003H Page 6 of 8 INTEGRATED THERMAL MANAGEMENT (ITM) MODULE HEAT EXCHANGE PORT REPLACEMENT SUBJECT: 11. 12. Wipe off the excess coolant from the ITM housing with a shop rag or towel (J). J 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 TSB #: 25-EM-003H K Page 7 of 8 INTEGRATED THERMAL MANAGEMENT (ITM) MODULE HEAT EXCHANGE PORT REPLACEMENT SUBJECT: 14. Install remaining components in reverse order of removal. 15. Fill the engine coolant with the previously drained coolant, adding new coolant as necessary. Refer to shop manual: • Engine Mechanical System > Cooling System > Coolant > Repair procedures 16. Start the engine and check for coolant leakage. 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 #: 25-EM-003H Page 8 of 8
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