Why does the check engine light come on when I start my S4?

It’s usually normal for your check engine light to turn on upon ignition. This is just your S4 testing its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.

Are Audi S4 engine noises bad?

Strange under-the-hood noises can point to problems within your Audi S4 engine. Knocking or tapping could be a symptom of low oil. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can indicate a loose fan belt, and grinding might be coming from the brakes, not the engine.

What could damage my Audi S4 engine?

Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, revving the engine while still 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.

Can I use water in my Audi S4 radiator?

An emergency is the only time you should consider putting water in your radiator. Outside of that, it’s recommended you use a pre-mixed coolant or a 50/50 blend of water and coolant. However, if you need to continue driving your S4 when you’re out of coolant, having water in the coolant reservoir is better than nothing.

What could cause my S4 engine to suddenly stop?

Reasons your S4 car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.

Who can repair my Audi S4 engine?

Your local Firestone Complete Auto Care has you covered with expert S4 engine repair. Schedule an appointment today and see us at one of our thousands of locations.

Reliable Repairs for 2021 Audi S4 Engines

Learn about

2021 Audi S4 Trim Options

Select your Audi S4 trim level to learn more about Audi-recommended engine repair. Even Audi S4 parts will get older and change.

V6/3.0L

Repairs for Your 2021 Audi S4

Nothing stays the same forever. Even your Audi S4's many parts and pieces. We’re here to help when something stops working. Select a repair or category to learn more about 2021 Audi S4 services.

We’re Trained to Care for Audi S4 Engines

Audi S4 drivers trust that their S4 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. When they do, you might find yourself searching for 2021 Audi S4 engine repair or replacement parts. Luckily, you won’t have to look far, since Firestone Complete Auto Care has 1,700+ locations across the country. Since 1926, we’ve taken care of 500 million+ cars, so you can rest assured knowing your Audi S4 engine will be in good hands. If you think something’s wrong with your engine, schedule an appointment at your convenience. Firestone Complete Auto Care offers both trustworthy and affordable engine repairs.

Check Engine Light on 2021 Audi S4

If your S4 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 control system that won’t go away on its own. Possible causes can include a failing oxygen sensor, bad spark plug, issues with your catalytic converter, or a leaking engine vacuum, to name a few possible causes. Bring your S4 in for an on-board diagnostic check and our expert techs will get the root of the problem. Other signs it's time for Audi S4 engine service might include essential fluid leaks, or misfiring.

Audi S4 Engine Repair

When your Audi S4 engine needs repairs, our expert techs will let you know what needs to be done and why before they get started. We don't start working until we have your approval. If a service can wait, we’ll make sure you know. If it's necessary for your safety, we'll make sure you understand that, too. We seek to give you all the info you need to make a smart decision about our services. Choose Firestone Complete Auto Care for Audi S4 engine repairs and you can feel confident knowing that we use Audi-approved parts and components like the timing belt, motor oil seal, ignition coil, or another part.

Engine Q&A 2021 Audi S4

Why does the check engine light come on when I start my S4? It’s usually normal for your check engine light to turn on upon ignition. This is just your S4 testing its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.
Are Audi S4 engine noises bad? Strange under-the-hood noises can point to problems within your Audi S4 engine. Knocking or tapping could be a symptom of low oil. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can indicate a loose fan belt, and grinding might be coming from the brakes, not the engine.
What could damage my Audi S4 engine? Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, revving the engine while still 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.
Can I use water in my Audi S4 radiator? An emergency is the only time you should consider putting water in your radiator. Outside of that, it’s recommended you use a pre-mixed coolant or a 50/50 blend of water and coolant. However, if you need to continue driving your S4 when you’re out of coolant, having water in the coolant reservoir is better than nothing.
What could cause my S4 engine to suddenly stop? Reasons your S4 car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.
Who can repair my Audi S4 engine? Your local Firestone Complete Auto Care has you covered with expert S4 engine repair. Schedule an appointment today and see us at one of our thousands of locations.