Why does my 840i xDrive’s check engine light come on when I start it?

It’s usually normal for your check engine light to turn on upon ignition. This is a sign that your vehicle is 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. Knocking or tapping could be a symptom of low oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.

What could damage my BMW 840i xDrive engine?

Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, revving your engine while the vehicle is in Park, or slamming the gas pedal while the engine is still cold. Protect your engine’s performance and efficiency by distancing yourself from these habits.

Can I use water in my BMW 840i xDrive 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 840i xDrive when you’re out of coolant, having water in the coolant reservoir is better than nothing.

Why did my 840i xDrive engine suddenly stop?

There are different reasons your 840i xDrive vehicle engine could suddenly stop. You may be looking at a lack of fuel, faulty sensors, issues with the ignition system, engine overheating, electrical problems, or mechanical troubles.

Who repairs BMW 840i xDrive engines?

Your local Firestone Complete Auto Care offers BMW 840i xDrive engine repair. Schedule an appointment today at one of our thousands of locations nationwide!

2021 BMW 840i xDrive Engine Repair

Learn about

2021 BMW 840i xDrive Trim Options

Select your BMW 840i xDrive trim level to learn more about BMW-recommended engine repair. Even BMW 840i xDrive parts will get older and change.

L6/3.0L

BMW 840i xDrive Repairs and Services

Stuff wears out. Even your BMW 840i xDrive's many parts and pieces. We’re here to help when something stops working. Click on a repair below to learn more about 2021 BMW 840i xDrive repairs.

We’re Trained to Care for BMW 840i xDrive Engines

BMW 840i xDrive drivers trust that their 840i xDrive will take them near and far. You probably thought about that when you got it. However, even your trustworthy engine is subject to wear and tear. Things can go sideways sometimes. If the unexpected strikes, you may search the internet frantically for quick and affordable 2021 BMW 840i xDrive engine repairs. That’s where Firestone Complete Auto Care comes in. Since 1926, we’ve taken care of 500 million+ cars, so you can rest assured knowing your BMW 840i xDrive engine will be in good hands. Schedule a courtesy inspection at the first sign of engine trouble. Firestone Complete Auto Care offers both trustworthy and affordable engine repairs.

Check Engine Light on 2021 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 flashing or steadily illuminated could point to problems with your car’s ignition, Potential causes may include a faulty oxygen sensor, bad spark plug, a problem with your catalytic converter, or an engine vacuum leak, to name a few potential sources. Bring your 840i xDrive to Firestone Complete Auto Care to get computerized diagnostics and our expert techs will get the root of the problem. engine rattling, oil leaks, or engine misfiring.

Engine Repairs for Your 2021 840i xDrive

When your BMW 840i xDrive engine needs repairs, our technicians will provide you with a thorough explanation beforehand. We don't start working until we have your approval. If a repair can wait, we'll let you know. We'll also tell you if it's necessary for your safety. We seek to give you all the info you need to make a smart decision about our services. Turn to Firestone Complete Auto Care for your 2021 840i xDrive engine repairs and you can feel good knowing that we only use BMW-compliant replacement parts such as the serpentine belt, valve guide seal, sensors, or another part.

Questions About 2021 BMW 840i xDrive Engines

Why does my 840i xDrive’s check engine light come on when I start it? It’s usually normal for your check engine light to turn on upon ignition. This is a sign that your vehicle is 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. Knocking or tapping could be a symptom of low oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.
What could damage my BMW 840i xDrive engine? Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, revving your engine while the vehicle is in Park, or slamming the gas pedal while the engine is still cold. Protect your engine’s performance and efficiency by distancing yourself from these habits.
Can I use water in my BMW 840i xDrive 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 840i xDrive when you’re out of coolant, having water in the coolant reservoir is better than nothing.
Why did my 840i xDrive engine suddenly stop? There are different reasons your 840i xDrive vehicle engine could suddenly stop. You may be looking at a lack of fuel, faulty sensors, issues with the ignition system, engine overheating, electrical problems, or mechanical troubles.
Who repairs BMW 840i xDrive engines? Your local Firestone Complete Auto Care offers BMW 840i xDrive engine repair. Schedule an appointment today at one of our thousands of locations nationwide!