Why does the check engine light in my 740i xDrive turn on when I start my car?

Generally, your check engine light turning on upon ignition is not a bad thing. It’s just your 740i xDrive firing up its circuits. The light should turn off in a bit, but come see us if it doesn't.

Why does my BMW engine sound different?

Strange engine sounds can be a sign something’s off in your BMW 740i xDrive. Knocking or tapping could be a symptom of low oil. 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 my BMW 740i xDrive engine?

Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, revving the engine while still 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 740i xDrive radiator?

It’s not recommended you put water in your 740i 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 could cause my 740i xDrive engine to suddenly stop?

Reasons your 740i xDrive car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.

Who can repair my BMW 740i xDrive engine?

Your local Firestone Complete Auto Care fixes BMW 740i xDrive engines. Book an appointment today! We have thousands of locations across the country.

Engine Repairs for Your 2021 BMW 740i xDrive

Learn about

2021 BMW 740i xDrive Trim Options

Select your BMW 740i xDrive trim level to learn more about BMW-recommended engine repair. Use the following chart to find information.

L6/3.0L

Repairs for Your 2021 BMW 740i xDrive

Stuff wears out. Even your BMW 740i xDrive’s engine parts and components will change. We’re here to help when something stops working. Select a repair or category to learn more about 2021 BMW 740i xDrive services.

We’re Trained to Care for BMW 740i xDrive Engines

BMW 740i xDrive engines are known for their reliability. You may have even been thinking about that when you bought it. However, even your trustworthy engine is subject to wear and tear. Sometimes plans go sideways. When they do, you might find yourself searching for 2021 BMW 740i xDrive engine repair or replacement parts. 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 740i xDrive engine will be in good hands. Schedule an appointment if you're experiencing problems that could require engine repair. Firestone Complete Auto Care is a top choice for professional engine diagnosis, service, and repair at an affordable price.

Illuminated Check Engine Light on 2021 BMW 740i xDrive

If your 740i 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 or emission system, and it won’t go away by ignoring it. Potential causes may include a faulty oxygen sensor, bad spark plug, issues with your catalytic converter, or a leak in the engine vacuum, but that's only a few of the possible causes. Stop by your local Firestone Complete Auto Care to get your 740i xDrive issues diagnosed and we'll determine exactly why your check engine light is on. Other signs your BMW 740i xDrive engine needs some TLC are oil leaks, or misfiring.

2021 740i xDrive Engine Services

If your 2021 740i xDrive engine needs repairs, 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 BMW 740i xDrive engine repairs and you can drive easy knowing that we use BMW-approved parts and fluids — timing belt, motor oil seal, sensors, or a different component.

Questions About 2021 BMW 740i xDrive Engines

Why does the check engine light in my 740i xDrive turn on when I start my car? Generally, your check engine light turning on upon ignition is not a bad thing. It’s just your 740i xDrive firing up its circuits. The light should turn off in a bit, but come see us if it doesn't.
Why does my BMW engine sound different? Strange engine sounds can be a sign something’s off in your BMW 740i xDrive. Knocking or tapping could be a symptom of low oil. 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 my BMW 740i xDrive engine? Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, revving the engine while still 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 740i xDrive radiator? It’s not recommended you put water in your 740i 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 could cause my 740i xDrive engine to suddenly stop? Reasons your 740i xDrive car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.
Who can repair my BMW 740i xDrive engine? Your local Firestone Complete Auto Care fixes BMW 740i xDrive engines. Book an appointment today! We have thousands of locations across the country.