TSB Document:

Affected Component: ELECTRICAL SYSTEM

Summary
On certain Sonata hybrid (YF HEV) vehicles, the HEV safety plug or power relay assembly (PRA) may cause the following symptoms and one or more current related DTCs. Follow the Service Procedure before diagnosing the hybrid battery. Please review the following instructions carefully to determine applicability depending on the model year of your vehicle. Warning light: • No “EV Ready” mode, or “Ready” light blinks on and off • “Check Engine” warning light on • Charging system warning light on • “Wrench” symbol (service indicator) blinks on and off Drivability symptoms: • Vehicle will not move from a stop or gasoline engine will not turn on. • Warning in the instrument cluster display: “Hybrid System Warning! Safely stop and Do Not Drive” and/or alarm sound.

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Date Published
AUG 01, 2023
NHTSA TSB #
10241797
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