2017 BMW 640i xDrive Convertible Complete Service & Maintenance Schedule

Key Takeaways

• The 2017 BMW 640i xDrive Convertible (F12 chassis) is powered by the N55 3.0L turbocharged inline-six engine, producing 315 horsepower and 330 lb-ft of torque, and features xDrive all-wheel drive .
• BMW's Condition Based Service (CBS) system uses sensors to calculate maintenance needs based on actual driving conditions, not fixed intervals . Synthetic oil and filter changes typically occur every 10,000 miles or 12 months .
• Brake fluid should be flushed periodically as it deteriorates over time; the vehicle uses DOT4 specification brake fluid .
• Spark plugs are recommended for replacement at 60,000 miles, with a repeat service at 120,000 miles .
• Oxygen sensors are scheduled for replacement at 120,000 miles, with a repeat service at 150,000 miles .
• The N55 engine has an oil capacity of approximately 6.5 liters.

Understanding BMW's Condition Based Service (CBS) System

The 2017 BMW 640i xDrive Convertible utilizes BMW's Condition Based Service (CBS) system . Unlike traditional fixed-interval maintenance schedules, CBS uses sensors and algorithms that take into account the driving conditions of your vehicle to determine when maintenance is required . The system adapts the amount of maintenance to your specific driving profile, considering factors such as trip length, engine temperature, and driving style .

Service information on required maintenance is continuously stored in the vehicle's remote key fob. Your service center will read out this data and suggest the right array of service procedures for your vehicle .

OEM Factory Maintenance Schedule

The following maintenance intervals represent the key factory-recommended milestones for the 2017 BMW 640i xDrive Convertible. Exact intervals are determined by the vehicle's CBS system based on driving conditions.

60,000 Mile Service

• Replace Spark Plugs
• Engine Air Filter Replacement (as indicated by CBS)
• Cabin Microfilter Replacement (as indicated by CBS)

120,000 Mile Service

• Replace Spark Plugs
• Replace Oxygen Sensors
• Brake Fluid Flush (if not performed within last 2 years)
• Engine Air Filter Replacement (as indicated by CBS)

150,000 Mile Service

• Replace Oxygen Sensors

Engine Oil and Filter Change

Synthetic oil and oil filter changes typically occur every 10,000 miles or 12 months, whichever occurs first, as determined by the CBS system.

Oil Specifications:

• BMW-approved synthetic oil
• Capacity with filter: Approximately 6.5 liters

Conservative Owner Guidance:

Motor oil is the single most important element in keeping your engine healthy . More frequent oil changes are advisable if you regularly haul heavy loads, drive in dusty areas, go off-road, or drive at low speeds for long distances . A conservative approach is to change synthetic motor oil every 5,000 to 7,500 miles for optimal engine protection.

Brake Fluid Service

The 2017 BMW 640i xDrive Convertible uses DOT4 specification brake fluid .

OEM Guidance:

Brake fluid service is indicated by the CBS system. Brake fluid deteriorates over time and eventually needs to be replaced with a brake system flush . Dark or brown brake fluid indicates significant contamination and the need for immediate service .

Conservative Owner Guidance:

Brake fluid is hygroscopic—it absorbs moisture from the atmosphere over time, which lowers its boiling point and compromises braking performance. A conservative approach is to flush and replace brake fluid every 2 years regardless of mileage.

Brake System Service

BMW recommends that front and rear brakes are disassembled and serviced at least once every 12,000 miles or 12 months, including inspecting the parking brake .

Signs of Brake Issues:

• Unusual noises (squealing or grinding)
• Vibration or pulsation in the steering wheel or pedal
• A burning smell coming from the tires
• An illuminated brake dashboard warning light

Spark Plug Service

The 2017 BMW 640i xDrive Convertible uses high-performance spark plugs, with the N55 engine requiring 6 spark plugs .

OEM Interval:

Spark plugs are scheduled for replacement at 60,000 miles, with a repeat service at 120,000 miles .

Conservative Owner Guidance:

Some service providers recommend replacing spark plugs on time or about every 30,000 miles . Without the spark of electricity created by spark plugs, your engine doesn't have the combustion it needs to start .

Oxygen Sensor Service

OEM Interval:

Oxygen sensors are scheduled for replacement at 120,000 miles, with a repeat service at 150,000 miles . Oxygen sensors deteriorate on a mileage basis, and replacement helps maximize fuel economy and minimize exhaust pollution.

Engine Air Filter

Engine air filter replacement is indicated by the CBS system. For driving in particularly dusty conditions, it is advisable to check the condition of the air filter earlier and replace it if the filter is visibly dirty.

Cabin Air Filter

Cabin air filters remove pollen, dirt, and harmful airborne pollutants from cabin air. Replacement intervals are determined by the CBS system. Clogged cabin filters restrict airflow through the heater and air conditioner, reducing HVAC efficiency.

Differential Fluid

The xDrive all-wheel-drive system includes both front and rear differentials. Differential oil should be checked for level and changed as per the owner's manual recommendation. For vehicles with standard differentials, fully synthetic gear oil meeting BMW specifications is typically recommended.

xDrive Transfer Case

The xDrive transfer case requires periodic fluid service using BMW-approved transfer case fluid. Service intervals are determined by the CBS system. Regular fluid service is critical for proper xDrive operation and system longevity.

Wheel Alignment

It is generally recommended to have wheel alignment checked approximately every 6,000 miles or 6 months. Signs that alignment may need attention include:

• The car pulling to one side
• Rapid or uneven tire wear
• A steering wheel that sits crooked while driving straight

Battery Care

Batteries generally need to be replaced every three to five years. Short trips and extreme temperatures can shorten battery life. The battery registration process should be performed when replacing the battery to ensure proper charging characteristics.

Long-Term Ownership Outlook

With proactive maintenance, a 2017 BMW 640i xDrive Convertible has a good chance of hitting 200,000 miles or more . Staying on track with routine service appointments can help your 640i xDrive Convertible perform better, keep you safer on the road, and help you avoid expensive repairs .

Regular maintenance is an investment that maintains the value and dependability of your car, extends its service life, and increases its resale value. Scheduled maintenance services can vary depending on driving conditions, climate, and other factors; however, recommended maintenance usually includes services like oil changes, tire rotations, brake pad replacement, filter changes, and fluid checks and exchanges .