Why does the check engine light in my E400 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 E400 testing its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.

Why is my Mercedes-Benz E400 making engine noise?

Unusual noises can signal a problem with your Mercedes-Benz E400 engine. Tapping or knocking could mean you need an oil change. 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 E400 engine?

Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, revving your engine while the vehicle is in Park, or accelerating too quickly, too soon. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.

Can I use water in my Mercedes-Benz E400 radiator?

While it’s not recommended, you can use water in your E400 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 E400 engine to suddenly stop?

Your E400 car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.

Who fixes Mercedes-Benz E400 engines?

Your local Firestone Complete Auto Care fixes Mercedes-Benz E400 engines. Book an appointment today! We have thousands of locations across the country.

Reliable Repairs for 2018 Mercedes-Benz E400 Engines

Learn about

2018 Mercedes-Benz E400 Trim Options

Select your Mercedes-Benz E400 trim level to learn more about Mercedes-Benz-recommended engine repair. Use the following chart to find information.

V6/3.0L

V6/3.5L

Repairs for Your 2018 Mercedes-Benz E400

Stuff wears out. Even your Mercedes-Benz E400's many parts and pieces. When something breaks or fails, we’re ready to help. Click on a repair below to learn more about 2018 Mercedes-Benz E400 repairs.

We Care for Mercedes-Benz E400 Engines

The Mercedes-Benz E400 is respected for its 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 2018 Mercedes-Benz E400 engine repairs. Luckily, you won’t have to look far, since Firestone Complete Auto Care has 1,700+ locations across the country. We've serviced millions of vehicles since 1926, and our professional technicians are trained to service Mercedes-Benz E400 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 2018 Mercedes-Benz E400

If your E400 check engine light is on, it’s time to get it looked at. 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. Possible causes can include a failing oxygen sensor, damaged spark plug, a problem with your catalytic converter, or an engine vacuum leak, to name a few potential sources. Bring your E400 to Firestone Complete Auto Care to get computerized diagnostics and we'll determine exactly why your check engine light is on. engine pinging noises, essential fluid leaks, or a sinking feeling that something’s wrong.

Mercedes-Benz E400 Engine Repair

When your Mercedes-Benz E400 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. 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. By choosing Firestone Complete Auto Care for E400 engine repairs and you can feel good knowing that we only use Mercedes-Benz-compliant replacement parts such as the timing chain or belt, motor oil seal, ignition coil, or another part.

2018 Mercedes-Benz E400 Engine Q&A

Why does the check engine light in my E400 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 E400 testing its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.
Why is my Mercedes-Benz E400 making engine noise? Unusual noises can signal a problem with your Mercedes-Benz E400 engine. Tapping or knocking could mean you need an oil change. 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 E400 engine? Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, revving your engine while the vehicle is in Park, or accelerating too quickly, too soon. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.
Can I use water in my Mercedes-Benz E400 radiator? While it’s not recommended, you can use water in your E400 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 E400 engine to suddenly stop? Your E400 car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.
Who fixes Mercedes-Benz E400 engines? Your local Firestone Complete Auto Care fixes Mercedes-Benz E400 engines. Book an appointment today! We have thousands of locations across the country.