2017 BMW 440i xDrive Convertible Complete Service & Maintenance Schedule

Key Takeaways

• CBS System: The 2017 BMW 440i xDrive Convertible is equipped with BMW's Condition Based Service (CBS) system, which uses sensors and algorithms to determine service needs based on actual driving conditions rather than a fixed schedule.
• Engine & Drivetrain: Powered by the B58 3.0-liter turbocharged inline-six engine producing 320 horsepower and 330 lb-ft of torque, with an 8-speed automatic transmission and xDrive all-wheel-drive system. The engine holds approximately 6.5 liters of oil with filter.
• Oil Specification: The B58 engine requires BMW Longlife-approved synthetic oil, with BMW Longlife-01 (LL-01) being a key approval for this engine.
• Oil Change Guidance: BMW's CBS system typically cycles service every 10,000 miles, but many independent specialists recommend a more conservative 5,000–7,500 mile interval for enhanced long-term engine protection.
• Maintenance Coverage: The vehicle originally included a 4-year/50,000-mile basic warranty, 4-year/50,000-mile powertrain warranty, and 3-year/36,000-mile maintenance program. This coverage has expired for all 2017 models.
• Estimated Annual Costs: Year 5 maintenance costs are estimated at $2,861, while years 1–2 were covered under the original maintenance program.

Understanding BMW's Condition Based Service (CBS) System

The 2017 BMW 440i xDrive Convertible is equipped with BMW's Condition Based Service (CBS) system. This intelligent system uses sensors and algorithms to monitor your driving style, trip length, and engine load, calculating when service is needed based on actual vehicle use rather than a fixed schedule.

Service notifications appear on the Control Display when maintenance is due. Service data is stored on your remote control key and can be read by your BMW Service Advisor. BMW recommends that maintenance and repair work be performed by an authorized BMW service center or a workshop with trained personnel who follow BMW specifications.

The CBS system tracks multiple service items separately, including engine oil, front and rear brake pads, brake fluid, and vehicle checks. A service interval warning is standard equipment on this vehicle.

Factory Maintenance Schedule Overview

The following intervals are based on BMW's maintenance system and specialist guidance. Your CBS system remains the ultimate authority for your specific vehicle.

Engine Oil & Filter Service

BMW Factory Schedule

BMW's CBS system determines the precise oil change interval based on driving style and conditions. The system typically cycles every 10,000 miles, but this varies based on actual driving conditions.

Oil Specifications

The 2017 BMW 440i xDrive Convertible is powered by the B58 3.0-liter inline-six engine.

Motor oil is the single most important element in keeping your engine healthy and helping it to enjoy a long life.

Owner Guidance

Many independent specialists recommend a more conservative oil change interval for long-term engine health:

• Standard approach: Follow the CBS system (approximately 10,000 miles or 1 year)
• Conservative approach: 5,000–7,500 miles, especially for aggressive or city driving, frequent short trips, or harsh environments
• Severe conditions: For frequent short trips or heavy city driving, consider oil changes every 5,000 to 7,500 miles

Always replace the oil filter when changing the oil.

Brake Fluid Service

BMW Factory Schedule

BMW recommends brake fluid replacement at regular intervals, with general guidance suggesting every 2 years or 20,000–30,000 miles. Brake fluid flushes are essential for maintaining brake system performance and safety.

Specification

The 2017 BMW 440i xDrive Convertible requires DOT 4 brake fluid.

Why Brake Fluid Service Matters

Brake fluid is a hydraulic fluid specially formulated to withstand the extreme pressures and temperatures of your braking system. Brake fluid should be changed when servicing brakes. Over time, brake fluid absorbs moisture from the air, which can:

• Reduce the boiling point, leading to brake fade under heavy braking
• Cause internal corrosion of brake system components
• Result in a spongy or soft brake pedal feel

Signs Brake Fluid Needs Service:

• Brake fluid appears dark, brown, or black
• Brake pedal feels spongy or soft
• Diminished braking performance

Spark Plug & Ignition System Service

Spark Plug Service

Spark plug replacement is typically recommended every 60,000 miles for most BMW models. The 2017 BMW 440i xDrive Convertible uses NGK spark plugs as original equipment.

Ignition Coils

Bosch ignition coils with spark plug connectors are available as replacement parts. Old ignition coils can impede engine performance by firing out of time with the engine and causing it to work harder than it needs to. Replacing ignition coils and spark plugs together is recommended as preventative maintenance.

Why Spark Plug Service Matters

Spark plugs are used to ignite the fuel-air mixture in the engine's combustion chamber. Keeping your spark plugs fresh is a very important part of keeping your car in top shape. When replacing spark plugs, check for abnormal pitting or charred plug ends. Also check each plug against each other—any strange variations among plugs may indicate an issue with a particular cylinder.

Engine Air Filter & Cabin Air Filter Service

Engine Air Filter

As a rule of thumb, replace the engine air filter every 15,000 to 30,000 miles or during routine service intervals, depending on driving conditions.

Cabin Air Filter

Cabin air filters provide clean air inside your BMW and should be replaced every 12,000 to 15,000 miles or as needed.

Brake System Service

A BMW's high-performance braking system requires regular upkeep to ensure safe, responsive stopping power. Inspect brake pads and rotors for wear or damage every 5,000 to 7,000 miles and replace them as needed. Brake pad wear indicators will alert you when your pads reach their wear limit.

Signs Brake Service Is Needed:

• Squealing or grinding noises when braking
• Brake pedal feels spongy or soft
• Vibration or pulsation in the pedal or steering wheel
• Brake warning light on the dashboard

Transmission Service

BMW Factory Schedule

BMW generally designates the automatic transmission fluid as "lifetime fill" for normal operation. The 2017 BMW 440i xDrive Convertible is equipped with a ZF 8-speed automatic transmission.

Owner Guidance

The transmission is one of the most neglected service areas on a car. Periodic fluid and filter changes at recommended intervals remove harmful contaminants that can damage expensive drivetrain components. Many independent specialists recommend transmission fluid and filter service at the 60,000-mile major service interval for long-term reliability.

Signs Transmission Service May Be Needed:

• Gears slipping when accelerating
• Hard shifting or difficulty getting into gear
• Dirty or contaminated transmission fluid
• Grinding sounds from the transmission

Wheel Bearing Service

As part of routine basic maintenance, it is a good idea to clean and repack your wheel bearings once a year to ensure they are properly lubricated. Wheel bearing grease lubricates the bearings that support the weight and heat generated by the spinning of the wheels. Genuine BMW wheel bearing grease is recommended for high-temperature service in rolling bearings.

xDrive Drivetrain Service

The xDrive all-wheel-drive system includes a transfer case and front differential that require periodic fluid service in addition to the rear differential. While BMW may designate these as "lifetime fill" in some cases, many independent specialists recommend proactive fluid changes at major service intervals (typically around 60,000–80,000 miles) to ensure optimal AWD performance and longevity.

Cooling System Service

Coolant and brake fluid flushes are essential for maintaining your BMW's performance. Follow BMW's recommended intervals, which may vary from 30,000 to 60,000 miles for coolant changes. Always use BMW-approved coolant.

Tire & Suspension Maintenance

Rotate tires every 5,000 to 8,000 miles and check tire pressure as needed. Have wheel alignment checked every 10,000 to 15,000 miles or if you notice uneven tire wear or pulling. Steering and suspension components should be inspected for signs of wear and replaced as needed to maintain a smooth, comfortable driving experience.

Maintenance Cost Overview

Based on data for the 2017 BMW 440i xDrive Convertible, estimated maintenance costs by year are approximately :

*Costs are estimates and vary significantly by region and service provider. The 3-year/36,000-mile maintenance program covers scheduled maintenance during that period.*

Frequently Asked Questions

1. How often should I change the oil in my 2017 BMW 440i xDrive Convertible?

BMW's CBS system determines the interval based on your driving style. Many independent specialists recommend changing synthetic motor oil every 5,000–7,500 miles for optimal engine health. The B58 engine requires approximately 6.5 liters of BMW Longlife-approved synthetic oil.

2. What oil does the 2017 BMW 440i xDrive Convertible require?

The B58 engine requires BMW Longlife-approved synthetic oil. BMW Longlife-01 (LL-01) is a key approval for this engine. Always refer to your owner's manual for the correct viscosity for your climate.

3. What spark plugs does the 2017 BMW 440i xDrive Convertible use?

The vehicle uses NGK spark plugs as original equipment.

4. When should the brake fluid be replaced?

BMW recommends brake fluid replacement at regular intervals, with general guidance suggesting every 2 years or 20,000–30,000 miles.

5. When should the transmission fluid be changed?

BMW generally designates the automatic transmission fluid as "lifetime fill," but many independent specialists recommend transmission fluid service at the 60,000-mile major service interval for long-term reliability.

6. When should the engine air filter be replaced?

Replace the engine air filter every 15,000 to 30,000 miles or during routine service intervals.

7. When should the spark plugs be replaced?

Spark plug replacement is typically recommended every 60,000 miles for most BMW models.

8. What warranty coverage did the 2017 BMW 440i xDrive Convertible include?

The vehicle originally included a 4-year/50,000-mile basic warranty, 4-year/50,000-mile powertrain warranty, 144-month/unlimited-mile corrosion perforation warranty, 48-month/unlimited-mile roadside assistance, and a 3-year/36,000-mile maintenance program. These periods have expired for all 2017 models.

9. How often should wheel bearings be serviced?

It is a good idea to clean and repack your wheel bearings once a year to ensure they are properly lubricated.

10. Does the 2017 BMW 440i xDrive Convertible use a timing belt or timing chain?

The B58 engine uses a timing chain designed for the life of the engine. Regular oil changes are critical for chain longevity.

*Always consult your vehicle's owner's manual and the CBS system for the most accurate maintenance requirements for your specific 2017 BMW 440i xDrive Convertible. Maintenance needs may vary by production date and driving conditions.*