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. It’s just your S4 firing up its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.

Why does my Audi engine sound different?

Strange engine sounds can be a sign something’s off in your Audi S4. Tapping or knocking could mean you're low on oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing may be caused by a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.

What could damage my Audi S4 engine?

Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' flooring the gas pedal while the car is in Park, or accelerating too quickly, too soon. Steer clear of these habits to help protect engine performance and efficiency.

Is it okay to put water in my Audi S4 radiator?

While it’s not recommended, you can use water in your S4 radiator in emergencies. Normally, you should only use a 50/50 mix of coolant and water or a pre-mixed coolant. However, if you are completely out of coolant and must continue driving, it’s better to have water in your coolant reservoir than nothing.

What could cause my S4 engine to suddenly stop?

Your S4 car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.

Where can I go for Audi S4 repair?

Your local Firestone Complete Auto Care fixes Audi S4 engines. Book an appointment today! We have thousands of locations across the country.

Engine Repairs for Your 2005 Audi S4

Learn about

2005 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.

V8/4.2L

2005 Audi S4 Repair

Stuff wears out. Even your Audi S4's many parts and pieces. When something breaks, we're ready. Select a repair or category to learn more about 2005 Audi S4 services.

We Care for Audi S4 Engines

Audi S4 engines are known for their reliability. You may have even been thinking about that when you bought it. However, even your trustworthy engine is subject to wear and tear. Sometimes plans go sideways. If they do, you’ll have to find a dependable 2005 Audi service center — quick! That’s where Firestone Complete Auto Care comes in. We've serviced millions of vehicles since 1926, and our professional technicians are trained to service Audi S4 engines. Schedule an appointment if you're experiencing problems that could require engine repair. After all, Firestone Complete Auto Care is one of the most popular picks for professional engine repairs thanks to its service and affordability.

Illuminated Check Engine Light on 2005 Audi S4

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 control system that won’t go away on its own. Potential causes may include a faulty oxygen sensor, bad spark plug, a problem with your catalytic converter, or a leak in the engine vacuum, but that's only a few of the possible causes. Bring your S4 to Firestone Complete Auto Care to get computerized diagnostics and our expert techs will get the root of the problem. engine pinging noises, burning smells, or engine misfiring.

Engine Repairs for Your 2005 S4

If your 2005 S4 engine needs repairs, our technicians will provide you with a thorough explanation beforehand. We make recommendations, but you make the final decision. If a repair can wait, we'll let you know. But if immediate repairs are necessary for your safety, we’ll make sure that's clear, too. We want to give you all the details you need to make an informed decision about your engine repairs. Turn to Firestone Complete Auto Care for your 2005 S4 engine repairs and you can drive easy knowing that we use Audi-approved parts and fluids — serpentine belt, valve guide seal, ignition coil, or another part.

Questions About 2005 Audi S4 Engines

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. It’s just your S4 firing up its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.
Why does my Audi engine sound different? Strange engine sounds can be a sign something’s off in your Audi S4. Tapping or knocking could mean you're low on oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing may be caused by a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.
What could damage my Audi S4 engine? Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' flooring the gas pedal while the car is in Park, or accelerating too quickly, too soon. Steer clear of these habits to help protect engine performance and efficiency.
Is it okay to put water in my Audi S4 radiator? While it’s not recommended, you can use water in your S4 radiator in emergencies. Normally, you should only use a 50/50 mix of coolant and water or a pre-mixed coolant. However, if you are completely out of coolant and must continue driving, it’s better to have water in your coolant reservoir than nothing.
What could cause my S4 engine to suddenly stop? Your S4 car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.
Where can I go for Audi S4 repair? Your local Firestone Complete Auto Care fixes Audi S4 engines. Book an appointment today! We have thousands of locations across the country.