Why does the check engine light in my Sonata turn on when I start my car?

Generally, your check engine light turning on upon ignition is not a bad thing. This is just your Sonata testing its circuits. The light should turn off in a bit, but come see us if it doesn't.

Are Hyundai Sonata engine noises bad?

Strange engine sounds can be a sign something’s off in your Hyundai Sonata. Tapping or knocking could mean you need an oil change. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.

What could damage my Hyundai Sonata engine?

Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' revving your engine while the vehicle is in Park, or accelerating too quickly, too soon. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.

Is it okay to put water in my Hyundai Sonata radiator?

It’s not recommended you put water in your Sonata radiator unless it’s an emergency. Under normal circumstances, use a 50/50 mix of water and coolant or a pre-mixed coolant. But, if you need to keep driving while out of coolant, using water is better than driving with an empty coolant reservoir.

What can cause the engine in my Sonata to suddenly stop?

Your Sonata car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.

Who fixes Hyundai Sonata engines?

Your local Firestone Complete Auto Care offers Hyundai Sonata engine repair. Schedule an appointment today at one of our thousands of locations nationwide!

Engine Repairs for Your 2003 Hyundai Sonata

Learn about

2003 Hyundai Sonata Trim Options

Select your Hyundai Sonata trim level to learn more about Hyundai-recommended engine repair. Use the following chart to find information.

L4/2.4L

V6/2.7L

Hyundai Sonata Repairs and Services

Nothing lasts forever. Even your Hyundai Sonata’s engine parts and components will change. When something breaks or fails, we’re ready to help. Select a service or repair below to learn more about what we can do for your 2003 Hyundai Sonata.

We’re Trained to Care for Hyundai Sonata Engines

Hyundai Sonata drivers trust that their Sonata will take them near and far. That might be why you bought it in the first place. However, the wear-proof engine has yet to be invented! Things can go sideways sometimes. If the unexpected strikes, you may search the internet frantically for quick and affordable 2003 Hyundai Sonata engine repairs. That's when it's time to head to Firestone Complete Auto Care. We've serviced millions of vehicles since 1926, and our professional technicians are trained to service Hyundai Sonata engines. Schedule a courtesy inspection at the first sign of engine trouble. Firestone Complete Auto Care is a top choice for professional engine diagnosis, service, and repair at an affordable price.

Illuminated Check Engine Light on 2003 Hyundai Sonata

If your Sonata check engine light is on, it’s time to get it looked at. A steady or flashing check engine light could signal a serious issue with your or emission system, and it won’t go away by ignoring it. Potential causes may include a faulty oxygen sensor, damaged spark plug, a problem with your catalytic converter, or a leaking engine vacuum, but that's only a few of the possible causes. Bring your Sonata in for an on-board diagnostic check and our expert techs will get the root of the problem. engine pinging noises, oil leaks, or engine misfiring.

Hyundai Sonata Engine Repair

If your 2003 Hyundai Sonata needs engine repair, our technicians will make sure you understand what’s going on before they start working on your engine. We don't start working until we have your approval. If a service can wait, we’ll make sure you know. But if immediate repairs are necessary for your safety, we’ll make sure that's clear, too. We seek to give you all the info you need to make a smart decision about our services. By choosing Firestone Complete Auto Care for Sonata engine repairs and you can feel confident knowing that we use Hyundai-approved parts and components like the serpentine belt, valve guide seal, fuses, or a different component.

Engine Q&A 2003 Hyundai Sonata

Why does the check engine light in my Sonata turn on when I start my car? Generally, your check engine light turning on upon ignition is not a bad thing. This is just your Sonata testing its circuits. The light should turn off in a bit, but come see us if it doesn't.
Are Hyundai Sonata engine noises bad? Strange engine sounds can be a sign something’s off in your Hyundai Sonata. Tapping or knocking could mean you need an oil change. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.
What could damage my Hyundai Sonata engine? Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' revving your engine while the vehicle is in Park, or accelerating too quickly, too soon. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.
Is it okay to put water in my Hyundai Sonata radiator? It’s not recommended you put water in your Sonata radiator unless it’s an emergency. Under normal circumstances, use a 50/50 mix of water and coolant or a pre-mixed coolant. But, if you need to keep driving while out of coolant, using water is better than driving with an empty coolant reservoir.
What can cause the engine in my Sonata to suddenly stop? Your Sonata car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.
Who fixes Hyundai Sonata engines? Your local Firestone Complete Auto Care offers Hyundai Sonata engine repair. Schedule an appointment today at one of our thousands of locations nationwide!