2017 Infiniti Q70

The fuel level sending unit inside the fuel tank can fail, causing the fuel gauge to read inaccurately, fluctuate erratically, or read empty when the tank has fuel. Some owners have been stranded when the gauge indicated fuel remaining but the tank was actually empty, or conversely, were unable to fill the tank completely because the gauge read full prematurely.

Replace the fuel level sending unit, which requires dropping or accessing the fuel tank. The sending unit is part of the fuel pump assembly on some models, requiring the complete pump module replacement. Ensure the replacement unit has the updated float arm design to prevent recurrence.

The front lower control arm bushings wear prematurely, causing clunking noises over bumps, wandering steering, and uneven front tire wear. The rubber bushings degrade from normal driving and road salt exposure, developing excessive play that affects alignment angles and handling precision.

Replace the front lower control arms or press in new bushings. Infiniti recommends replacing the complete control arm assembly rather than individual bushings. Perform a four-wheel alignment after replacement. Inspect the upper control arm bushings, sway bar end links, and ball joints at the same time.

The InTouch infotainment system can experience touchscreen unresponsiveness, navigation freezing, and intermittent loss of audio output. The system may take an excessively long time to boot up after starting the vehicle, and the backup camera display may be delayed or show a black screen.

Have the dealer update the infotainment software to the latest version. Perform a hard reset of the infotainment system. If the display itself is defective, the touchscreen panel or control module may need replacement. Check for Infiniti service bulletins related to infotainment updates for the 2016 model year.

The rear differential cover gasket and pinion seal can develop leaks over time, causing differential fluid to drip onto the driveway and reduce the fluid level inside the differential. Low fluid leads to increased wear, noise, and eventual differential bearing or gear damage if not addressed promptly.

Replace the rear differential cover gasket and/or pinion seal. Clean the mating surfaces thoroughly before installing new gaskets. Refill with the correct Infiniti-specified differential fluid. Inspect the differential for any signs of internal wear caused by low fluid operation.

The alternator can fail prematurely, typically between 80,000 and 120,000 miles. Symptoms include dimming headlights, battery warning light on the dashboard, slow cranking on startup, and electrical accessories behaving erratically. If not caught quickly, the battery will drain completely and the vehicle will stall.

Replace the alternator with a new or remanufactured unit. Test the battery condition after alternator replacement, as repeated undercharging may have damaged the battery. Inspect the serpentine belt and tensioner while the alternator is being replaced, as a worn belt can contribute to charging issues.