NHTSA Complaint #11478410 — 2017 HYUNDAI ELANTRA

POWER TRAIN issue reported to NHTSA

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Complaint Details

ODI Number	11478410
Vehicle	2017 HYUNDAI ELANTRA
Component	POWER TRAIN
Date of Incident	August 4, 2022
Date Filed	August 9, 2022
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	UT

Consumer Description

Started having intermittent misfires on various cylinders, specifically cylinder 3. (Code P0303) This would mainly cause the engine to stall, or idle. No accidents or injuries to report, but having a car stall out at 80 MPH on the freeway is certainly scary as hell. Just frustration and possible damage to other parts of the engine (spark plugs and some wiring). Took vehicle into local auto shop where they reproduced the problem, but informed me of TSB 20-FL-001H, which can only be fixed by a Hyundai dealership due to the ECM reprogramming and the proprietary nature of the tool to perform that. As such I have taken the vehicle to a Hyundai Dealership where, again, they were able to find and diagnose the problem, as well as determine the spark plugs were likely fouled by the known-faulty ignition coil packs. This is the third time in 75,000 miles I've replaced them.

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