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June 1, 2023 Service bulletin

Electronic Parking Brake (EPB) warning light on due to brake fluid entering the HECU electrical connector

Hyundai technical service bulletin 23-01-036H-1 for 2022 Hyundai Sonata, 2022 Hyundai Elantra and 2022 Hyundai Santa Fe.

Bulletin number
23-01-036H-1
Component
Parking brake
Summary
Some Elantra (CN7A), Sonata (DN8A) and Santa Fe (TMA) vehicles may exhibit the Electronic Parking Brake (EPB) warning light on due to brake fluid entering the HECU electrical connector. DTC C1501 (EPB Switch Failure) may be present, but EPB performance remains unaffected. This bulletin describes the procedure to inspect, and if necessary, replace the Hydraulic Electronic Control Unit (HECU).

Owners of these vehicles have filed 24 complaints in the brakes category.

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