Why does the check engine light in my E420 turn on when I start my car?

It's okay if your check engine light comes on when you first start your vehicle. It’s just your E420 firing up 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 under-the-hood noises can point to problems within your Mercedes-Benz E420 engine. Tapping or knocking could mean you need an oil change. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can indicate a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.

What could damage a Mercedes-Benz engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Mercedes-Benz E420 engine?

Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, flooring the gas pedal while the car is in Park, or slamming the gas pedal while the engine is still cold. Steer clear of these habits to help protect engine performance and efficiency.

Can I add water to my Mercedes-Benz E420 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 E420 when you’re out of coolant, having water in the coolant reservoir is better than nothing.

What could cause my E420 engine to suddenly stop?

If your E420 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 can repair my Mercedes-Benz E420 engine?

Your local Firestone Complete Auto Care fixes Mercedes-Benz E420 engines. Book an appointment today! We have thousands of locations across the country.

Reliable Repairs for 1997 Mercedes-Benz E420 Engines

Learn about

1997 Mercedes-Benz E420 Trim Options

Select your Mercedes-Benz E420 trim level to learn more about Mercedes-Benz-recommended engine repair. Even Mercedes-Benz E420 parts will get older and change.

V8/4.2L

1997 Mercedes-Benz E420 Repair

Nothing lasts forever. Even your Mercedes-Benz E420's many parts and pieces. When something breaks, we're ready. Select a repair or category to learn more about 1997 Mercedes-Benz E420 services.

We Know Mercedes-Benz E420 Engines

Mercedes-Benz E420 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. If the unexpected strikes, you may search the internet frantically for quick and affordable 1997 Mercedes-Benz E420 engine repairs. 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 Mercedes-Benz E420 engine will be in good hands. 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 1997 Mercedes-Benz E420

As soon as your E420 check engine light turns on, it’s time to get an expert’s opinion. A steady or flashing check engine light could signal a serious issue with your vehicle's ignition, Causes may include a faulty oxygen sensor, worn spark plug, a problem with your catalytic converter, or an engine vacuum leak, to name a few potential sources. Bring your E420 to Firestone Complete Auto Care to get computerized diagnostics and we'll determine exactly why your check engine light is on. Other signs it's time for Mercedes-Benz E420 engine service might include oil leaks, or a sinking feeling that something’s wrong.

1997 E420 Engine Services

If your 1997 Mercedes-Benz E420 needs engine repair, our technicians will provide you with a thorough explanation beforehand. 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 provide you with the information you need to make an informed engine repair decision. Choose Firestone Complete Auto Care for Mercedes-Benz E420 engine repairs and you can drive easy knowing that we use Mercedes-Benz-approved parts and fluids — timing chain or belt, oil gasket, sensors, or other parts.

Questions About 1997 Mercedes-Benz E420 Engines

Why does the check engine light in my E420 turn on when I start my car? It's okay if your check engine light comes on when you first start your vehicle. It’s just your E420 firing up 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 under-the-hood noises can point to problems within your Mercedes-Benz E420 engine. Tapping or knocking could mean you need an oil change. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can indicate a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.
What could damage a Mercedes-Benz engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Mercedes-Benz E420 engine? Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, flooring the gas pedal while the car is in Park, or slamming the gas pedal while the engine is still cold. Steer clear of these habits to help protect engine performance and efficiency.
Can I add water to my Mercedes-Benz E420 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 E420 when you’re out of coolant, having water in the coolant reservoir is better than nothing.
What could cause my E420 engine to suddenly stop? If your E420 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 can repair my Mercedes-Benz E420 engine? Your local Firestone Complete Auto Care fixes Mercedes-Benz E420 engines. Book an appointment today! We have thousands of locations across the country.