Warning lamp for DTC P218100 (Cooling System Performance) related to the Integrated Thermal-Management...
Hyundai technical service bulletin 25-EM-007H TSB for 2021-2023 Hyundai Elantra, 2022-2025 Hyundai Kona and 2020-2023 Hyundai Sonata Hybrid.
- Bulletin number
- 25-EM-007H TSB
- Component
- Engine
- Summary
- Some Elantra (CN7, CN7A), Kona (OS, SX2), and Sonata Hybrid (DN8 HEV) vehicles equipped with 2.0L engines may illuminate a warning lamp for DTC P218100 (Cooling System Performance) related to the Integrated Thermal-Management Module (ITM). Follow the service procedure in this bulletin to install a spring onto the thermostat within the ITM, in order to prevent premature opening, and perform an ECU software update on affected vehicles.
Owners of these vehicles have filed 141 complaints in the engine category.
Vehicles covered
- Hyundai Elantra 2021-2023 202120222023
- Hyundai Kona 2022-2025 2022202320242025
- Hyundai Sonata Hybrid 2020-2023 2020202120222023
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