Why does the check engine light in my S4 turn on when I start my car?

It's okay if your check engine light comes on when you first start your vehicle. This is just your S4 testing its circuits. The light should turn off in a bit, but come see us if it doesn't.

Are Audi S4 engine noises bad?

Strange engine sounds can be a sign something’s off in your Audi S4. Tapping or knocking could mean you're low on oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can be traced back to a loose fan belt, and grinding might be coming from the brakes, not the engine.

What could damage my Audi S4 engine?

Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, revving the engine while still in Park, or slamming the gas pedal while the engine is still cold. Protect your engine’s performance and efficiency by distancing yourself from these habits.

Is it okay to put 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.

Why did my S4 engine suddenly stop?

If your S4 car engine suddenly stops, it could be due to overheating, low fuel, a faulty ignition system, sensor problems, electrical system trouble, or mechanical issues.

Who fixes Audi S4 engines?

For Audi S4 engine repair, trust your local Firestone Complete Auto Care. You can make an appointment today at any of our thousands of locations across the U.S.

Engine Repairs for Your 2004 Audi S4

Learn about

2004 Audi S4 Trim Options

Select your Audi S4 trim level to learn more about Audi-recommended engine repair. Use the following chart to find information.

V8/4.2L

Audi S4 Repairs and Services

Stuff wears out. Even your Audi S4's many parts and pieces. We’re here to help when something stops working. Select a service or repair below to learn more about what we can do for your 2004 Audi S4.

We Care for Audi S4 Engines

Audi S4 engines are known for their reliability. That might be why you bought it in the first place. Even so, pieces and parts can break down over time. Things can go wrong on the road. When they do, you might find yourself searching for 2004 Audi S4 engine repair or replacement parts. 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 Audi S4 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.

My 2004 Audi S4 Check Engine Light Is On

As soon as your S4 check engine light turns on, it’s time to get an expert’s opinion. A check engine light that’s flashing or steadily illuminated could point to problems with your or emission system that won't go away on its own. Causes may include a faulty oxygen sensor, bad spark plug, a clogged catalytic converter, or a leak in the engine vacuum, but that's only a few of the possible causes. Stop by your local Firestone Complete Auto Care to get your S4 issues diagnosed and we'll determine exactly why your check engine light is on. rattling sounds, oil leaks, or a sinking feeling that something’s wrong.

Audi S4 Engine Repair

If your 2004 Audi S4 needs engine repair, our technicians will make sure you understand what’s going on before they start working on your engine. We make recommendations, but you make the final decision. If a repair isn’t urgent right now, we’ll let you know. We'll also tell you if it's necessary for your safety. We want to provide you with the information you need to make an informed engine repair decision. Turn to Firestone Complete Auto Care for your 2004 S4 engine repairs and you can feel good knowing that we only use Audi-compliant replacement parts such as the timing chain or belt, oil gasket, ignition coil, or a different component.

2004 Audi S4 Engine Q&A

Why does the check engine light in my S4 turn on when I start my car? It's okay if your check engine light comes on when you first start your vehicle. This is just your S4 testing its circuits. The light should turn off in a bit, but come see us if it doesn't.
Are Audi S4 engine noises bad? Strange engine sounds can be a sign something’s off in your Audi S4. Tapping or knocking could mean you're low on oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can be traced back to a loose fan belt, and grinding might be coming from the brakes, not the engine.
What could damage my Audi S4 engine? Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, revving the engine while still in Park, or slamming the gas pedal while the engine is still cold. Protect your engine’s performance and efficiency by distancing yourself from these habits.
Is it okay to put 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.
Why did my S4 engine suddenly stop? If your S4 car engine suddenly stops, it could be due to overheating, low fuel, a faulty ignition system, sensor problems, electrical system trouble, or mechanical issues.
Who fixes Audi S4 engines? For Audi S4 engine repair, trust your local Firestone Complete Auto Care. You can make an appointment today at any of our thousands of locations across the U.S.