Engine Misfire & Ignition Coil Issues in 2016 Hyundai Sonata Hybrid – What You Need to Know

The 2016 Hyundai Sonata Hybrid has recently been the subject of a service bulletin highlighting a potentially serious issue involving the ignition system. If you're experiencing a persistent check engine light or an unusual rattling noise while driving, you could be dealing with faulty ignition coils, a problem that may lead to engine misfires and compromised vehicle performance.

Understanding the Issue

Faulty ignition coils are known to disrupt the timing and efficiency of spark plug firing. In the case of the Sonata Hybrid, this can lead to inconsistent engine performance and even stalling. The primary symptoms include:

• Illuminated check engine light
• Rattling noise while driving
• Engine misfires
• Reduced fuel efficiency
• Jerky acceleration or idling
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Vehicles Affected by the Service Bulletin

The issue specifically impacts the 2016 Hyundai Sonata Hybrid. According to technical service bulletin (TSB) No. 16-01-003, all four ignition coils in affected vehicles may be faulty and require replacement.

Corrective Measures by Hyundai

To rectify this issue, Hyundai dealers are instructed to replace all four ignition coils under the new-car warranty program. This proactive step ensures the long-term reliability of your engine and prevents further damage that could result from continued misfiring.

Warranty Information

This service is offered free of charge to eligible vehicle owners under Hyundai’s comprehensive new-car warranty. There are no out-of-pocket expenses for qualified repairs, as long as your vehicle falls under the warranty coverage.

Steps for Vehicle Owners

If you own a 2016 Hyundai Sonata Hybrid, take the following actions:

• Contact your local Hyundai dealer with your Vehicle Identification Number (VIN).
• Ask if your vehicle is included under TSB No. 16-01-003.
• Schedule an appointment for ignition coil replacement if eligible.
• You can also contact Hyundai Customer Care at 800-633-5151.
• Alternatively, check with the National Highway Traffic Safety Administration (NHTSA) at 888-327-4236.
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Where to Get Help

Instead of searching blindly for a repair facility, visit MotorVero’s Service & Repair tool to find a certified local Hyundai service center. This tool offers reliable listings and verified user reviews to ensure quality service near you.

Why Addressing This Issue Is Crucial

Neglecting faulty ignition coils can escalate into more serious engine problems and expensive repairs. Prolonged engine misfires can lead to:

• Damage to the catalytic converter
• Increased emissions and pollution
• Higher fuel consumption
• Complete engine failure in severe cases

Technical Background on Ignition Coils

Ignition coils play a critical role in the internal combustion engine by transforming the battery's voltage to a higher one necessary for igniting the air-fuel mixture. When these coils begin to fail, the spark becomes weak or inconsistent, resulting in poor engine performance. In hybrid vehicles like the Sonata, precise ignition timing is even more vital due to the synergy between electric and combustion power sources.

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How TSBs Differ from Recalls

A Technical Service Bulletin (TSB) is not the same as a recall. TSBs are issued by automakers to address known issues without mandating repairs. Unlike recalls, which are safety-related and often regulated by the NHTSA, TSBs are informational advisories provided to service centers. However, when covered under warranty, the repairs from a TSB can be performed at no cost to the owner.

Preventative Maintenance Tips

• Schedule regular diagnostic checks even if the check engine light isn’t on.
• Always use OEM (original equipment manufacturer) ignition components.
• Monitor fuel consumption for sudden drops, which may indicate misfiring.
• Listen for unusual noises, especially during acceleration or idling.

Conclusion

While ignition coil failure in the 2016 Hyundai Sonata Hybrid may be an inconvenience, it’s reassuring that Hyundai is addressing the issue through a free warranty repair. Timely action can preserve engine health, maintain fuel efficiency, and ensure driving safety. Use MotorVero to find the right service professional near you and keep your hybrid running at peak performance.