Why does the check engine light in my 840i xDrive 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 840i xDrive testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.

Why is my BMW 840i xDrive making engine noise?

Strange under-the-hood noises can point to problems within your BMW 840i xDrive engine. Tapping or knocking could mean you're low on oil. Whistling could mean a belt is misaligned or there's an intake leak. 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 a BMW engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your BMW 840i xDrive engine?

Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, revving the engine while still in Park, or slamming the gas pedal while the engine is still cold. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.

Can I add water to my BMW 840i xDrive radiator?

It’s not recommended you put water in your 840i xDrive 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 840i xDrive to suddenly stop?

If your 840i xDrive car engine suddenly stops, it could be due to overheating, low fuel, a faulty ignition system, sensor problems, electrical system trouble, or mechanical issues.

Where can I go for BMW 840i xDrive repair?

Your local Firestone Complete Auto Care has you covered with expert 840i xDrive engine repair. Schedule an appointment today and see us at one of our thousands of locations.

2020 BMW 840i xDrive Engine Repair

Learn about

2020 BMW 840i xDrive Trim Options

Select your BMW 840i xDrive trim level to learn more about BMW-recommended engine repair. Use the following chart to find information.

L6/3.0L

BMW 840i xDrive Repairs and Services

Nothing lasts forever. Even your BMW 840i xDrive's many parts and pieces. When something breaks, we're ready. Select a repair or category to learn more about 2020 BMW 840i xDrive services.

We Know BMW 840i xDrive Engines

BMW 840i xDrive engines are known for their reliability. You probably thought about that when you got it. However, the wear-proof engine has yet to be invented! Things can go wrong on the road. If the unexpected strikes, you may search the internet frantically for quick and affordable 2020 BMW 840i xDrive 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 more than 500 million vehicles since 1926, and our technicians know BMW 840i xDrive 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.

Check Engine Light on 2020 BMW 840i xDrive

If your 840i xDrive check engine light is on, it’s time to get it looked at. A check engine light that’s on or flashing could be a symptom of a serious problem in your or emission system that won't go away on its own. Potential causes may include a faulty oxygen sensor, damaged spark plug, a clogged catalytic converter, or an engine vacuum leak, to name a few potential sources. Stop by your local Firestone Complete Auto Care to get your 840i xDrive issues diagnosed and our expert techs will get the root of the problem. Other signs your BMW 840i xDrive engine needs some TLC are burning smells, or a sinking feeling that something’s wrong.

2020 840i xDrive Engine Services

If your 2020 840i xDrive engine needs repairs, our technicians will make sure you understand what’s going on before they start working on your engine. 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 seek to give you all the info you need to make a smart decision about our services. Choose Firestone Complete Auto Care for BMW 840i xDrive engine repairs and you can feel good knowing that we only use BMW-compliant replacement parts such as the timing chain or belt, valve guide seal, fuses, or another part.

Engine Q&A 2020 BMW 840i xDrive

Why does the check engine light in my 840i xDrive 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 840i xDrive testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.
Why is my BMW 840i xDrive making engine noise? Strange under-the-hood noises can point to problems within your BMW 840i xDrive engine. Tapping or knocking could mean you're low on oil. Whistling could mean a belt is misaligned or there's an intake leak. 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 a BMW engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your BMW 840i xDrive engine? Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, revving the engine while still in Park, or slamming the gas pedal while the engine is still cold. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.
Can I add water to my BMW 840i xDrive radiator? It’s not recommended you put water in your 840i xDrive 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 840i xDrive to suddenly stop? If your 840i xDrive car engine suddenly stops, it could be due to overheating, low fuel, a faulty ignition system, sensor problems, electrical system trouble, or mechanical issues.
Where can I go for BMW 840i xDrive repair? Your local Firestone Complete Auto Care has you covered with expert 840i xDrive engine repair. Schedule an appointment today and see us at one of our thousands of locations.