Infiniti FX Workshop Manuals and Repair Manuals

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Infiniti FX

The Infiniti FX-series (called the Infiniti QX70 from late 2013) is a mid-size luxury crossover SUV produced by the Nissan-owned Infiniti luxury vehicle brand since the 2003 model year. The FX replaced the QX4 as Infiniti's mid-size luxury-type SUV, although the QX4 was smaller than the FX. The FX is now in its second generation, since the 2009 model year FX35 and FX50. It is available as front-engine, rear-wheel drive or all-wheel drive. Standard safety features include dual front air bags, side impact air bags, and rear curtain airbags with rollover sensor, as well as Zone Body construction with front and rear crumple zones.

Infiniti FX FAQ's

How often should the air filter be replaced in an Infiniti FX?

The air filter in an Infiniti FX should be replaced every 15,000 to 30,000 miles, or as recommended by the manufacturer. A clogged or dirty air filter can restrict airflow to the engine, resulting in reduced performance and fuel efficiency. Regularly replacing the air filter helps maintain optimal engine performance and extends the life of the engine.

How often should the brake fluid be flushed in an Infiniti FX?

The brake fluid in an Infiniti FX should be flushed every 2 years or 30,000 miles, whichever comes first. Regular brake fluid flushes help remove contaminants and moisture that can affect brake performance and lead to brake system failure. Neglecting brake fluid maintenance can compromise the vehicle's safety and result in costly repairs.

How often should the cabin air filter be replaced in an Infiniti FX?

The cabin air filter in an Infiniti FX should generally be replaced every 15,000 to 30,000 miles, or as recommended by the manufacturer. A clogged or dirty cabin air filter can reduce the effectiveness of the vehicle's HVAC system and compromise air quality inside the cabin. Regularly replacing the cabin air filter helps maintain a clean and comfortable interior environment.

How often should the fuel filter be replaced in an Infiniti FX?

The fuel filter in an Infiniti FX should generally be replaced every 30,000 to 60,000 miles, depending on the specific model and driving conditions. A clogged or dirty fuel filter can restrict fuel flow, leading to poor engine performance and reduced fuel efficiency. Regularly replacing the fuel filter helps maintain optimal engine performance and protects the fuel injectors from potential damage.

How often should the oil be changed in an Infiniti FX?

The oil in an Infiniti FX should be changed every 5,000 to 7,500 miles or every 6 months, whichever comes first. Regular oil changes are crucial for maintaining the engine's performance and longevity. Neglecting oil changes can result in engine damage and reduced fuel efficiency.

How often should the serpentine belt be replaced in an Infiniti FX?

The serpentine belt in an Infiniti FX should generally be replaced every 60,000 to 100,000 miles, depending on the specific model and driving conditions. A worn or damaged serpentine belt can lead to accessory failures, such as the alternator or power steering pump, resulting in loss of power and vehicle functionality. Regularly inspecting and replacing the serpentine belt helps prevent unexpected breakdowns and ensures proper operation of the vehicle's systems.

How often should the spark plugs be replaced in an Infiniti FX?

The spark plugs in an Infiniti FX should generally be replaced every 60,000 to 100,000 miles, depending on the specific model and driving conditions. Worn or faulty spark plugs can result in misfires, reduced engine performance, and increased fuel consumption. Regularly replacing the spark plugs helps maintain optimal engine performance and fuel efficiency.

How often should the timing belt be replaced in an Infiniti FX?

The timing belt in an Infiniti FX should generally be replaced every 60,000 to 90,000 miles, depending on the specific model and engine type. A worn or damaged timing belt can cause engine misfires, loss of power, or even catastrophic engine failure. Regularly replacing the timing belt according to the manufacturer's recommendations helps prevent costly engine repairs.

What is the recommended battery size for an Infiniti FX?

The recommended battery size for an Infiniti FX varies depending on the specific model and year. It is important to consult the vehicle's manual or contact a certified Infiniti technician to determine the correct battery size and specifications for your vehicle. Using the recommended battery size ensures proper starting power and electrical system performance.

What is the recommended engine coolant temperature range for an Infiniti FX?

The recommended engine coolant temperature range for an Infiniti FX is typically between 195 to 220 degrees Fahrenheit, as specified by the manufacturer. The engine coolant temperature should stay within this range to ensure proper engine operation and prevent overheating. Monitoring the coolant temperature and addressing any abnormal fluctuations is important for maintaining engine performance and preventing potential damage.

What is the recommended oil viscosity for an Infiniti FX?

The recommended oil viscosity for an Infiniti FX is typically 5W-30 or 0W-30, as specified by the manufacturer. It is important to use the recommended oil viscosity to ensure proper lubrication and protection of the engine's internal components. Using the wrong viscosity oil can lead to increased engine wear and potentially damage the engine.

What is the recommended tire pressure for an Infiniti FX?

The recommended tire pressure for an Infiniti FX is typically between 32 to 35 PSI (pounds per square inch), as specified by the manufacturer. Proper tire pressure ensures optimal handling, braking, and fuel efficiency. It is important to regularly check and maintain the correct tire pressure to prevent uneven tire wear and ensure safe driving conditions.

What type of coolant should be used in an Infiniti FX?

An Infiniti FX requires the use of ethylene glycol-based coolant with a 50/50 mix of coolant and distilled water. This mixture is required to ensure proper heat transfer and prevent engine overheating. Using the correct coolant type and ratio is essential for maintaining optimal engine performance and preventing damage to the cooling system.

What type of power steering fluid should be used in an Infiniti FX?

An Infiniti FX typically requires the use of power steering fluid specified by the manufacturer, such as Nissan PSF-II or equivalent. Using the correct power steering fluid is important for maintaining proper steering response and preventing premature wear of steering components. It is recommended to consult the vehicle's manual or seek professional advice to ensure the use of the appropriate power steering fluid.

What type of transmission fluid should be used in an Infiniti FX?

An Infiniti FX typically requires the use of automatic transmission fluid (ATF) specified by the manufacturer, such as Nissan Matic S or equivalent. Using the correct transmission fluid is crucial for ensuring smooth gear shifts and proper transmission operation. It is important to consult the vehicle's manual or contact a certified Infiniti technician to determine the specific ATF recommended for your model.

Infiniti FX Manuals Index

Infiniti FX Workshop Manual

Infiniti FX Owners Manual

Infiniti FX Misc Document

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