What happens if my BMW 645Ci spark plugs fail?

Replace spark plugs on time or about every 30,000 miles or so. Without the spark of electricity created by spark plugs, your engine doesn’t have the combustion it needs to start — which could leave you stranded on the road. Always replace your spark plugs on time based on BMW’s recommendations.

What do I do if I see a pool of liquid under my BMW 645Ci?

Don't ignore puddles of fluid under your BMW 645Ci. It could signal a coolant leak, brake fluid leak, or an oil leak. Let any one of these leaks linger and it could cause engine damage.

Are hard starts and stops bad for my BMW 645Ci engine?

You can make your driving habits more engine-friendly. Hard starts and stops can increase the stress on engine parts, especially over many years. Boost your fuel economy and care for your engine by using gradual, smooth starts and stops instead.

Where can I get a tune-up for my BMW 645Ci?

At the nearest Firestone Complete Auto Care! We’re ready to help service, maintain, and repair your BMW 645Ci.

How frequently do the fuel injectors in my BMW 645Ci need to be cleaned?

Factors like fuel type and driving conditions can affect how frequently you need to clean your 645Ci fuel injectors. Some manufacturers recommend a fuel system cleaning as part of routine maintenance, or as needed if your vehicle is showing signs of poor fuel system performance.

Who offers BMW 645Ci tune-ups?

When your 645Ci needs a tune-up, head to your local Firestone Complete Auto Care. Check out our latest offers to save on your service and schedule an appointment online.

2004 BMW 645Ci Tune-Up & Engine Service

Get a Tune-Up

Schedule an Appointment for Your BMW 645Ci Tune-Up

Tune in to tune up. Listen to your 645Ci and schedule an engine tune-up at the first strange squeak, clunk, or click. Make an appointment today.

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Tune Into Your BMW 645Ci

Is it time for an engine tune-up? If you usually wait until your car has an issue to take it in for service, now is the time to work on that habit, especially if you drive a 2004 BMW 645Ci. Periodic tune-ups can bring more power back to your 645Ci’s engine. They're designed to help your engine start easier and run more efficiently, which can lead to lower emission levels and better fuel economy. When you get routine engine tune-ups based on BMW's recommendations, you invest in your 645Ci's long-term health and engine performance.

Engine Tune-Up for BMW 645Ci

Your local Firestone Complete Auto Care offers a range of engine tune-up services for your 2004 BMW 645Ci. The standard Firestone Tune-Up is one service option. The standard Firestone Tune-Up includes new spark plugs (and installation!), a thorough inspection of engine components, and a lifetime parts warranty*. Another service option pays special attention to the filters in your 645Ci. Specifically, we replace the fuel filter and air filter. Yet another service is a fuel system cleaning process, which involves removing varnish, dirt, and carbon deposits that have built up inside the fuel injectors, throttle body, and throttle plate in your 645Ci. This can improve your fuel system’s performance (and therefore, your engine’s performance). Here’s something to remember when choosing services: the mileage and service history of your 645Ci can determine what kind of service it needs. This means that a tune-up service that’s a great fit for another car may not be optimal for yours. Ask one of our technicians what your vehicle needs, based on your driving habits and your car’s current condition.

Where Should I Go for My BMW 645Ci Tune-Up?

If you’re looking for 2004 645Ci engine tune-up services, head to Firestone Complete Auto Care. Not sure when you’re due for a tune-up? Use BMW’s recommended maintenance schedule as a reference point, or schedule an appointment ASAP if you notice any of these signs: decreased gas mileage, "rough" idling or stalling when stopped, engine knocking, or an illuminated check engine light.

*Ask a Firestone Complete Auto Care teammate about full terms and conditions for warranties.

Questions About 2004 BMW 645Ci Engine Tune-Ups

What happens if my BMW 645Ci spark plugs fail? Replace spark plugs on time or about every 30,000 miles or so. Without the spark of electricity created by spark plugs, your engine doesn’t have the combustion it needs to start — which could leave you stranded on the road. Always replace your spark plugs on time based on BMW’s recommendations.
What do I do if I see a pool of liquid under my BMW 645Ci? Don't ignore puddles of fluid under your BMW 645Ci. It could signal a coolant leak, brake fluid leak, or an oil leak. Let any one of these leaks linger and it could cause engine damage.
Are hard starts and stops bad for my BMW 645Ci engine? You can make your driving habits more engine-friendly. Hard starts and stops can increase the stress on engine parts, especially over many years. Boost your fuel economy and care for your engine by using gradual, smooth starts and stops instead.
Where can I get a tune-up for my BMW 645Ci? At the nearest Firestone Complete Auto Care! We’re ready to help service, maintain, and repair your BMW 645Ci.
How frequently do the fuel injectors in my BMW 645Ci need to be cleaned? Factors like fuel type and driving conditions can affect how frequently you need to clean your 645Ci fuel injectors. Some manufacturers recommend a fuel system cleaning as part of routine maintenance, or as needed if your vehicle is showing signs of poor fuel system performance.
Who offers BMW 645Ci tune-ups? When your 645Ci needs a tune-up, head to your local Firestone Complete Auto Care. Check out our latest offers to save on your service and schedule an appointment online.

2004 BMW 645Ci Maintenance

Stay ahead of any potential issues with your BMW 645Ci so your car can keep pace with life! Learn more about proper maintenance for your vehicle below.

Repairs on Your 2004 BMW 645Ci

Nothing lasts forever. Even your BMW 645Ci's many parts and pieces. When something breaks, we're ready. Click on a repair below to learn more about 2004 BMW 645Ci repairs.