2014 BMW 740Li xDrive Preventive Maintenance & Service Schedule

Key Takeaways

• The 2014 BMW 740Li xDrive (F01/F02 LCI chassis) is powered by the N55 3.0L turbocharged inline-six engine, with an oil capacity of approximately 6.5 liters .
• BMW utilizes a Condition Based Service (CBS) system that uses sensors and driving data to calculate maintenance needs based on actual driving conditions rather than fixed intervals .
• Factory-scheduled maintenance milestones include spark plug replacement at 60,000 miles, oxygen sensor replacement at 120,000 miles (repeat at 150,000), and another spark plug service at 120,000 miles .
• The vehicle uses DOT4 Low Viscosity (LV) brake fluid — the system must be totally flushed before filling with LV brake fluid .
• Brake system service is recommended at least once every 12 months or 12,000 miles .
• Wheel alignment should be checked approximately every 6,000 miles .
• With proactive maintenance, a 2014 BMW 740Li xDrive can achieve 200,000 miles or more .

Understanding BMW's Condition Based Service (CBS) System

The 2014 BMW 740Li xDrive utilizes BMW's Condition Based Service (CBS) system, which uses onboard sensors and algorithms to calculate maintenance needs based on actual driving conditions rather than fixed intervals . The system adapts service intervals to your specific driving profile, considering factors such as trip length, engine temperature, and driving style.

Service information on required maintenance is stored in the vehicle's remote key fob, allowing your BMW Service Advisor to propose the precise maintenance procedures needed for your vehicle.

Engine Specifications & Capacities

The 2014 BMW 740Li xDrive is equipped with the N55 3.0L turbocharged inline-six engine (engine code N55B30A) .

OEM Factory Maintenance Schedule

The following maintenance intervals represent the key factory-recommended milestones for the 2014 BMW 740Li xDrive. Exact intervals are determined by the vehicle's CBS system based on driving conditions .

Preventive Maintenance Schedule

Engine Oil and Filter Change

Motor oil is the single most important element in keeping your engine healthy and helping it to enjoy a long life. The 2014 740Li xDrive uses the N55 engine with an oil capacity of approximately 6.5 liters .

Oil Change Interval Guidance:

BMW recommends changing your 2014 740Li xDrive's oil at regular intervals as determined by the CBS system . Your 740Li xDrive may need an oil change sooner if:

• The check engine light is on
• You hear knocking sounds from the engine
• You sense an oil smell in the cabin
• You see an excess amount of vehicle exhaust

Conservative Owner Guidance:

More frequent oil changes may be needed if you regularly haul heavy loads, drive in dusty conditions, go off-roading, or drive at low speeds for long distances . In general, being extra-diligent about oil changes won't damage your BMW—each oil change is another chance to diagnose and treat other issues, such as worn brake pads or a weak battery .

Spark Plug Service

Spark plugs are vital components that provide the electric spark needed for combustion. The 2014 BMW 740Li xDrive uses 6 spark plugs for its inline-six engine .

Service Interval: Spark plugs are recommended for replacement at 60,000 miles, with a repeat service at 120,000 miles .

Estimated Replacement Cost: On average, the cost for a BMW 740Li xDrive spark plug replacement is approximately $370 for parts and labor, though prices may vary depending on location and service provider .

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, which could leave you stranded .

Symptoms of Faulty Spark Plugs :

• Difficulty starting your car
• Check engine light for a misfire code
• Reduced fuel economy and/or power
• Rough idle and/or unexplained engine vibration
• Engine knocking
• Flashing check engine light during acceleration (can cause engine damage)

Even if only one spark plug is found to be faulty, they should always be replaced in sets .

Oxygen Sensor Service

Service Interval: Oxygen sensors are scheduled for replacement at 120,000 miles, with a repeat service at 150,000 miles . Replacement helps maximize fuel economy and minimize exhaust pollution.

Brake Fluid Service

The 2014 BMW 740Li xDrive requires DOT4 Low Viscosity (LV) brake fluid .

Important Note: The system must be totally flushed before filling with LV brake fluid .

Fluid Specifications :

• Boiling Point: >265°C (>509°F)
• Wet Boiling Point: >170°C (>338°F)
• DOT4 specification

Fluid Guidance: Brake fluid should be changed every time you service your brakes . Brake fluid is hygroscopic—it absorbs moisture from the atmosphere over time, which lowers its boiling point and compromises braking performance.

Brake System Service

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

Brake Pad Life: The majority of brake pads last between 30,000 and 40,000 miles. Factors like frequent highway driving and smooth braking can help your brake pads last longer. Hauling heavy loads and riding your brakes can shorten their useful life.

Symptoms of Brake Issues :

• Unusual noises (squealing or grinding)
• Vibration or pulsation in the steering wheel or pedal
• A burning smell near the tires
• Illuminated brake dashboard warning light
• A feeling that something isn't right

Wheel Alignment

Recommended Interval: Wheel alignment should be checked approximately every 6,000 miles or 6 months, whichever comes first .

Signs Alignment May Need Attention :

• A feeling that your car pulls to one side
• Excessive wear on only one tire
• A steering wheel that feels off center or crooked while driving straight
• Tires that squeal frequently

Unlike with other potential issues, you won't see any dashboard warning lights if your wheel alignment needs attention .

Engine Tune-Up Signs

Pay attention to warning signs that your engine may need attention :

• Decreased gas mileage
• "Rough" idling or stalling when stopped
• Knocking noises in the engine
• A lit check engine light on your dashboard

Periodic tune-ups can bring more power back to your 740Li xDrive's engine, helping it start smoothly and run more efficiently, which can mean better fuel economy and lower emissions .

xDrive-Specific Maintenance Considerations

The xDrive all-wheel-drive system adds several maintenance considerations beyond rear-wheel-drive models:

Transfer Case Fluid: The transfer case requires periodic fluid service using BMW-approved transfer case fluid. This is critical for proper xDrive operation and system longevity.

Differential Fluid: Both front and rear differentials require periodic fluid service. For vehicles with standard differentials, fully synthetic gear oil is recommended.

Axle Shafts and CV Boots: Front axle shafts and CV boots should be inspected periodically for damage or tears.

Long-Term Ownership Outlook

With proper and diligent maintenance, a 2014 BMW 740Li xDrive can achieve 200,000 miles or more . Staying on track with routine service appointments can help your 740Li xDrive 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.