Why does the check engine light come on when I start my S420?

It's okay if your check engine light comes on when you first start your vehicle. It’s just your S420 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 Mercedes-Benz engine sound different?

Unusual noises can signal a problem with your Mercedes-Benz S420 engine. Knocking or tapping could be a symptom of low 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 a sign of brake problems rather than engine issues.

What could damage my Mercedes-Benz S420 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. Protect your engine’s performance and efficiency by distancing yourself from these habits.

Is it okay to put water in my Mercedes-Benz S420 radiator?

It’s not recommended you put water in your S420 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 S420 to suddenly stop?

Reasons your S420 car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.

Who repairs Mercedes-Benz S420 engines?

Your local Firestone Complete Auto Care fixes Mercedes-Benz S420 engines. Book an appointment today! We have thousands of locations across the country.

Reliable Repairs for 1997 Mercedes-Benz S420 Engines

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1997 Mercedes-Benz S420 Trim Options

Select your Mercedes-Benz S420 trim level to learn more about Mercedes-Benz-recommended engine repair. Use the following chart to find information.

V8/4.2L

1997 Mercedes-Benz S420 Repair

Stuff wears out. Even your Mercedes-Benz S420's many parts and pieces. 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 1997 Mercedes-Benz S420.

We Know Mercedes-Benz S420 Engines

Mercedes-Benz S420 engines are known for their reliability. You probably thought about that when you got it. 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 1997 Mercedes-Benz S420 engine repair or replacement parts. 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 Mercedes-Benz S420 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 1997 Mercedes-Benz S420

As soon as your S420 check engine light turns on, it’s time to get an expert’s opinion. A check engine light that’s on or flashing could be a symptom of a serious problem in your car’s ignition, Causes may include a faulty oxygen sensor, damaged spark plug, a clogged catalytic converter, or a leaking engine vacuum, to name a few possible causes. Bring your S420 to Firestone Complete Auto Care to get computerized diagnostics and we’ll figure out why that check engine light is giving you grief. engine pinging noises, essential fluid leaks, or engine misfiring.

Mercedes-Benz S420 Engine Repair

When your Mercedes-Benz S420 engine needs repairs, our technicians will make sure you understand what’s going on before they start working on your engine. We never do any work without your sign-off. If a service can wait, we’ll make sure you know. We'll also tell you if it's necessary for your safety. 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 1997 S420 engine repairs and you can feel confident knowing that we use Mercedes-Benz-approved parts and components like the cambelt, oil gasket, sensors, or other parts.

Engine Q&A 1997 Mercedes-Benz S420

Why does the check engine light come on when I start my S420? It's okay if your check engine light comes on when you first start your vehicle. It’s just your S420 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 Mercedes-Benz engine sound different? Unusual noises can signal a problem with your Mercedes-Benz S420 engine. Knocking or tapping could be a symptom of low 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 a sign of brake problems rather than engine issues.
What could damage my Mercedes-Benz S420 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. Protect your engine’s performance and efficiency by distancing yourself from these habits.
Is it okay to put water in my Mercedes-Benz S420 radiator? It’s not recommended you put water in your S420 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 S420 to suddenly stop? Reasons your S420 car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.
Who repairs Mercedes-Benz S420 engines? Your local Firestone Complete Auto Care fixes Mercedes-Benz S420 engines. Book an appointment today! We have thousands of locations across the country.