engine INFINITI Q50 2023 Owners Manual

.Operating in hot weather in stop-and-go
“rush hour” traffic.
. Extensive idling and/or low speed driving
for long distances, such as police, taxi or
door-to-door delivery use.
. Driving in dusty conditions.
. Driving on rough, muddy or salt spread
roads.
. Using a car-top carrier.
If your vehicle is mainly operated under the
severe conditions, follow the severe main-
tenance intervals shown in the maintenance
schedule.
OIL CONTROL SYSTEM
Your vehicle is equipped with oil control
system. It calculates engine oil and filter
change interval based on driving conditions.
Driving in severe conditions will shorten the
engine oil and filter change interval. When
the oil replacement indicator appears in the
vehicle information display, the engine oil
and filter need to be replaced.
Maintenance and schedules9-7

9-8Maintenance and schedules
The following shows the maintenance schedule.
Choose the maintenance schedule needed based on your vehicle driving conditions.
After 120,000 miles (192,000 km)/144 months, continue maintenance at the same mileage/time interval.
5,000 Miles/6 Months/8,000 KmStandard maintenance:.Perform tire rotation (1)
Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models)
(1) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.
10,000 Miles/12 Months/16,000
Km
Standard maintenance:.Inspect brake lines and cables.Inspect brake pads and rotors.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Inspect stop lamp switch and brake pedal
position switch (1)
.Inspect transfer fluid (2).Inspect differential gear oil (2).Replace engine oil and filter (3).Perform tire rotation (4) Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Replace brake fluid
(1) Inspect the clearance between the brake pedal
and the switches.
(2) If using a car-top carrier, or driving on rough or
muddy roads, change (not just inspect) oil at every
20,000 miles (32,000 km) or 24 months.
(3) If the oil replacement indicator is displayed,
change the engine oil and filter as soon as
possible. After replacing the engine oil, reset the
display.
(4) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.
STANDARD MAINTENANCE

15,000 Miles/18 Months/24,000
Km
Standard maintenance:.Inspect Intelligent Key battery.Replace In-cabin microfilter.Perform tire rotation (1)
Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models)
(1) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.
20,000 Miles/24 Months/32,000
Km
Standard maintenance:.Inspect brake lines and cables.Inspect brake pads and rotors.Inspect EVAP vapor lines and fuel lines.Inspect exhaust system.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect stop lamp switch and brake pedal
position switch (1)
.Inspect transfer fluid.Inspect differential gear oil.Replace brake fluid.Replace engine oil and filter (2).Perform tire rotation (3) Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Replace brake fluid.Replace transfer fluid.Replace differential gear oil
(1) Inspect the clearance between the brake pedal
and the switches.
(2) If the oil replacement indicator is displayed,
change the engine oil and filter as soon as
possible. After replacing the engine oil, reset the
display.
(3) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.
Maintenance and schedules9-9

9-10Maintenance and schedules
25,000 Miles/30 Months/40,000
Km
Standard maintenance:.Perform tire rotation (1)
Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models)
(1) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.
30,000 Miles/36 Months/48,000
Km
Standard maintenance:.Inspect brake lines and cables.Inspect brake pads and rotors.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Inspect stop lamp switch and brake pedal
position switch (1)
.Inspect transfer fluid.Inspect differential gear oil.Replace air cleaner filter (2).Replace engine oil and filter (3).Replace In-cabin microfilter.Replace Intelligent Key battery.Perform tire rotation (4) Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Replace brake fluid
(1) Inspect the clearance between the brake pedal
and the switches.
(2) If operating mainly in dusty conditions, more
frequent maintenance may be required.
(3) If the oil replacement indicator is displayed,
change the engine oil and filter as soon as
possible. After replacing the engine oil, reset the
display.
(4) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.

35,000 Miles/42 Months/56,000
Km
Standard maintenance:.Perform tire rotation (1)
Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models)
(1) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.
40,000 Miles/48 Months/64,000
Km
Standard maintenance:.Inspect brake lines and cables.Inspect brake pads and rotors.Inspect drive belts (1).Inspect EVAP vapor lines and fuel lines.Inspect exhaust system.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect stop lamp switch and brake pedal
position switch (2)
.Inspect transfer fluid.Inspect differential gear oil.Replace brake fluid.Replace engine oil and filter (3).Perform tire rotation (4) Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Replace brake fluid.Replace transfer fluid.Replace differential gear oil
(1) Replace the drive belts if found damaged.
(2) Inspect the clearance between the brake pedal
and the switches.
(3) If the oil replacement indicator is displayed,
change the engine oil and filter as soon as
possible. After replacing the engine oil, reset the
display.
(4) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.
Maintenance and schedules9-11

9-12Maintenance and schedules
45,000 Miles/54 Months/72,000
Km
Standard maintenance:.Replace In-cabin microfilter.Replace Intelligent Key battery.Perform tire rotation (1)
Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models)
(1) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.
50,000 Miles/60 Months/80,000
Km
Standard maintenance:.Inspect brake lines and cables.Inspect brake pads and rotors.Inspect drive belts (1).Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Inspect stop lamp switch and brake pedal
position switch (2)
.Inspect transfer fluid.Inspect differential gear oil.Replace engine oil and filter (3).Perform tire rotation (4) Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Replace brake fluid
(1) Replace the drive belts if found damaged.
(2) Inspect the clearance between the brake pedal
and the switches.
(3) If the oil replacement indicator is displayed,
change the engine oil and filter as soon as
possible. After replacing the engine oil, reset the
display.
(4) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.

55,000 Miles/66 Months/88,000
Km
Standard maintenance:.Perform tire rotation (1)
Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models)
(1) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.
60,000 Miles/72 Months/96,000
Km
Standard maintenance:.Inspect brake lines and cables.Inspect brake pads and rotors.Inspect drive belts (1).Inspect EVAP vapor lines and fuel lines.Inspect exhaust system.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect stop lamp switch and brake pedal
position switch (2)
.Inspect transfer fluid.Inspect differential gear oil.Replace air cleaner filter (3).Replace brake fluid.Replace engine oil and filter (4).Replace In-cabin microfilter.Replace Intelligent Key battery.Perform tire rotation (5) Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Replace brake fluid.Replace transfer fluid.Replace differential gear oil
(1) Replace the drive belts if found damaged.
(2) Inspect the clearance between the brake pedal
and the switches.
(3) If operating mainly in dusty conditions, more
frequent maintenance may be required.
(4) If the oil replacement indicator is displayed,
change the engine oil and filter within two weeks
or less than 500 miles (800 km).
(5) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.
Maintenance and schedules9-13

9-14Maintenance and schedules
65,000 Miles/78 Months/104,000
Km
Standard maintenance:.Perform tire rotation (1)
Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models)
(1) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.
70,000 Miles/84 Months/112,000
Km
Standard maintenance:.Inspect brake lines and cables.Inspect brake pads and rotors.Inspect drive belts (1).Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Inspect stop lamp switch and brake pedal
position switch (2)
.Inspect transfer fluid.Inspect differential gear oil.Replace engine oil and filter (3).Perform tire rotation (4) Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Replace brake fluid
(1) Replace the drive belts if found damaged.
(2) Inspect the clearance between the brake pedal
and the switches.
(3) If the oil replacement indicator is displayed,
change the engine oil and filter as soon as
possible. After replacing the engine oil, reset the
display.
(4) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.

75,000 Miles/90 Months/120,000
Km
Standard maintenance:.Replace In-cabin microfilter.Replace Intelligent Key battery.Perform tire rotation (1)
Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models)
(1) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.
80,000 Miles/96 Months/128,000
Km
Standard maintenance:.Inspect brake lines and cables.Inspect brake pads and rotors.Inspect drive belts (1).Inspect EVAP vapor lines and fuel lines.Inspect exhaust system.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect stop lamp switch and brake pedal
position switch (2)
.Inspect transfer fluid.Inspect differential gear oil.Replace brake fluid.Replace engine oil and filter (3).Perform tire rotation (4) Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Replace brake fluid.Replace transfer fluid.Replace differential gear oil
(1) Replace the drive belts if found damaged.
(2) Inspect the clearance between the brake pedal
and the switches.
(3) If the oil replacement indicator is displayed,
change the engine oil and filter as soon as
possible. After replacing the engine oil, reset the
display.
(4) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.
Maintenance and schedules9-15

9-16Maintenance and schedules
85,000 Miles/102 Months/
136,000 Km
Standard maintenance:.Perform tire rotation (1)
Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models)
(1) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.
90,000 Miles/108 Months/
144,000 Km
Standard maintenance:.Inspect brake lines and cables.Inspect brake pads and rotors.Inspect drive belts (1).Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Inspect stop lamp switch and brake pedal
position switch (2)
.Inspect transfer fluid.Inspect differential gear oil.Replace air cleaner filter (3).Replace engine oil and filter (4).Replace In-cabin microfilter.Replace Intelligent Key battery.Perform tire rotation (5) Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Replace brake fluid
(1) Replace the drive belts if found damaged.
(2) Inspect the clearance between the brake pedal
and the switches.
(3) If operating mainly in dusty conditions, more
frequent maintenance may be required.
(4) If the oil replacement indicator is displayed,
change the engine oil and filter as soon as
possible. After replacing the engine oil, reset the
display.
(5) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.