Why does my S420’s check engine light come on when I start it?

Generally, your check engine light turning on upon ignition is not a bad thing. This is just your S420 testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.

Why does my Mercedes-Benz engine sound different?

Strange engine sounds can be a sign something’s off in your Mercedes-Benz S420. 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 Mercedes-Benz S420 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 pushing 'the pedal to the metal' before the engine has warmed up. Protect your engine’s performance and efficiency by distancing yourself from these habits.

Can I put water in my Mercedes-Benz S420 radiator?

Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.

What could cause my S420 engine 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.

Where can I go for Mercedes-Benz S420 repair?

Your local Firestone Complete Auto Care has you covered with expert S420 engine repair. Schedule an appointment today and see us at one of our thousands of locations.

Engine Repairs for Your 1995 Mercedes-Benz S420

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1995 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

Repairs for Your 1995 Mercedes-Benz S420

Stuff wears out. Even your Mercedes-Benz S420’s engine parts and components will change. When something breaks or fails, we’re ready to help. Select a repair or category to learn more about 1995 Mercedes-Benz S420 services.

We Know Mercedes-Benz S420 Engines

Mercedes-Benz S420 drivers trust that their S420 will take them near and far. You may have even been thinking about that when you bought it. Even so, pieces and parts can break down over time. Things can go wrong on the road. If the unexpected strikes, you may search the internet frantically for quick and affordable 1995 Mercedes-Benz S420 engine repairs. 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 an appointment if you're experiencing problems that could require engine repair. Firestone Complete Auto Care offers both trustworthy and affordable engine repairs.

Check Engine Light on 1995 Mercedes-Benz S420

An illuminated check engine light on your Mercedes-Benz S420 is one of the first signs it's time to 'brake' for engine service. A check engine light that’s flashing or steadily illuminated could point to problems with your car’s ignition, Possible causes can include a failing 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 S420 in for an on-board diagnostic check and we’ll figure out why that check engine light is giving you grief. rattling sounds, oil leaks, or misfiring.

Engine Repairs for Your 1995 S420

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 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 want to give you all the details you need to make an informed decision about your engine repairs. By choosing Firestone Complete Auto Care for S420 engine repairs and you can feel good knowing that we only use Mercedes-Benz-compliant replacement parts such as the serpentine belt, oil gasket, ignition coil, or other parts.

1995 Mercedes-Benz S420 Engine Q&A

Why does my S420’s check engine light come on when I start it? Generally, your check engine light turning on upon ignition is not a bad thing. This is just your S420 testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.
Why does my Mercedes-Benz engine sound different? Strange engine sounds can be a sign something’s off in your Mercedes-Benz S420. 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 Mercedes-Benz S420 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 pushing 'the pedal to the metal' before the engine has warmed up. Protect your engine’s performance and efficiency by distancing yourself from these habits.
Can I put water in my Mercedes-Benz S420 radiator? Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.
What could cause my S420 engine 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.
Where can I go for Mercedes-Benz S420 repair? Your local Firestone Complete Auto Care has you covered with expert S420 engine repair. Schedule an appointment today and see us at one of our thousands of locations.