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).
