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Service bulletin 5NP-D5E6F-12

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10089641
Published by NHTSA2017-01-26
Manufacturer's number5NP-D5E6F-12
Manufacturer's date2016-11-10
NHTSA componentENGINE; ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR

NHTSA's summary

CERTAIN SONATA VEHICLES EQUIPPED WITH THE 1.6L TURBO ENGINE HAVE A MANUAL ALTERNATOR BELT TENSIONER SYSTEM. THE TOP ALTERNATOR MOUNTING BOLT (A IN THE DIAGRAM) MAY BREAK OVER TIME IF IT IS TIGHTENED OVER SPECIFICATION AND COULD RESULT IN ILLUMINATION OF THE BATTERY WARNING LIGHT AND/OR THE ENGINE OVERHEATING IN SOME CASES. THIS BULLETIN DESCRIBES THE PROCEDURE TO REPLACE THE TOP ALTERNATOR MOUNTING BOLT.

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Electrical system, Engine, Alternator

Vehicles listed
HYUNDAI SONATA2015, 2016, 2017

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
5NP-Q7W7V-112017-11-14. Service bulletin. On certain 2017 MY Sonata (LF) and Santa Fe Sport (AN) vehicles, a screw securing the alternator?s regulator may not have been properly torqued during assembly. If this condition exists, the interior and/or exterior lights may flicker, and the alternator?s charging function may be affected illuminating the charging system warning light in the instrument cluster.
5NP-B8B9B-122017-01-26. Service bulletin. HYUNDAI MOTOR AMERICA IS CONDUCTING A SERVICE CAMPAIGN TO REPLACE THE TOP ALTERNATOR MOUNTING BOLT ON CERTAIN 2015-17 MODEL YEAR SONATA 1.6L VEHICLES. SERVICE CAMPAIGN TTT PROVIDES A PROCEDURE TO REPLACE THE TOP ALTERNATOR MOUNTING BOLT.