Why does the check engine light come on when I start my 645Ci?

It's okay if your check engine light comes on when you first start your vehicle. It’s just your 645Ci firing up its circuits. The light should turn off in a bit, but come see us if it doesn't.

Why is my BMW 645Ci making engine noise?

Strange engine sounds can be a sign something’s off in your BMW 645Ci. Tapping or knocking could mean you're low on oil. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can be traced back to a loose fan belt, and grinding might be coming from the brakes, not the engine.

What could damage a BMW engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your BMW 645Ci 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 pushing 'the pedal to the metal' before the engine has warmed up. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.

Can I put water in my BMW 645Ci radiator?

Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.

What could cause my 645Ci engine to suddenly stop?

If your 645Ci 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 645Ci repair?

Your local Firestone Complete Auto Care fixes BMW 645Ci engines. Book an appointment today! We have thousands of locations across the country.

2004 BMW 645Ci Engine Repair

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2004 BMW 645Ci Trim Options

Select your BMW 645Ci trim level to learn more about BMW-recommended engine repair. Even BMW 645Ci parts will get older and change.

V8/4.4L

BMW 645Ci Repairs and Services

Nothing lasts forever. Even your BMW 645Ci’s engine parts and components will change. When something breaks or fails, we’re ready to help. Click on a repair below to learn more about 2004 BMW 645Ci repairs.

We’re Trained to Care for BMW 645Ci Engines

The BMW 645Ci 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. When they do, you might find yourself searching for 2004 BMW 645Ci engine repair or replacement parts. That’s where Firestone Complete Auto Care comes in. We've serviced more than 500 million vehicles since 1926, and our technicians know BMW 645Ci engines. Schedule an appointment if you're experiencing problems that could require engine repair. Firestone Complete Auto Care offers both trustworthy and affordable engine repairs.

Check Engine Light on 2004 BMW 645Ci

As soon as your 645Ci check engine light turns on, it’s time to get an expert’s opinion. A check engine light that’s flashing or steadily illuminated could point to problems with your fuel injection, Causes may include a faulty oxygen sensor, damaged spark plug, a clogged catalytic converter, or a leak in the engine vacuum, to name a few possible causes. Bring your 645Ci in for an on-board diagnostic check and our expert techs will get the root of the problem. rattling sounds, essential fluid leaks, or engine misfiring.

2004 645Ci Engine Services

If your 2004 BMW 645Ci needs engine repair, our technicians will make sure you understand what’s going on before they start working on your engine. 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 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 2004 645Ci engine repairs and you can feel confident knowing that we use BMW-approved parts and components like the cambelt, valve guide seal, ignition coil, or other parts.

Questions About 2004 BMW 645Ci Engines

Why does the check engine light come on when I start my 645Ci? It's okay if your check engine light comes on when you first start your vehicle. It’s just your 645Ci firing up its circuits. The light should turn off in a bit, but come see us if it doesn't.
Why is my BMW 645Ci making engine noise? Strange engine sounds can be a sign something’s off in your BMW 645Ci. Tapping or knocking could mean you're low on oil. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can be traced back to a loose fan belt, and grinding might be coming from the brakes, not the engine.
What could damage a BMW engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your BMW 645Ci 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 pushing 'the pedal to the metal' before the engine has warmed up. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.
Can I put water in my BMW 645Ci radiator? Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.
What could cause my 645Ci engine to suddenly stop? If your 645Ci 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 645Ci repair? Your local Firestone Complete Auto Care fixes BMW 645Ci engines. Book an appointment today! We have thousands of locations across the country.