2023 NISSAN FRONTIER coolant reservoir

3.8L 6 cylinder (VQ38DD engine model)
(without idle stop)
1. Windshield-washer fluid reservoir(P. 8-15)
2. Fusible link (P. 8-23)
3. Fuse/Fusible link box (P. 8-23)
4. Fusible link and relay box (P. 8-23)
5. Engine oil filler cap (P. 8-8)
6. Engine oil dipstick (P. 8-8)
7. Brake fluid reservoir (P. 8-14)
8. Air cleaner (P. 8-20)
9. Drive belt location (P. 8-19)
10. Power steering fluid reservoir (P. 8-14)
11. Radiator cap (P. 8-6)
12. Battery (P. 8-16)
13. Engine coolant reservoir (P. 8-6)
NOTE:
Your vehicle may not be equipped with
an engine cover.
Refer to the page number indicated in
parentheses for operating details.
LDI3520
ENGINE COMPARTMENT CHECK
LOCATIONS
0-8Illustrated table of contents

3.8L 6 cylinder (VQ38DD engine model)
(with idle stop)
1. Windshield-washer fluid reservoir(P. 8-15)
2. Fusible link and relay box(P. 8-23)
3. Fuse/Fusible link box (P. 8-23)
4. Fusible link (P. 8-23)
5. Engine oil filler cap (P. 8-8)
6. Engine oil dipstick (P. 8-8)
7. Brake fluid reservoir (P. 8-14)
8. Relay box (P. 8-23)
9. Air cleaner (P. 8-20)
10. Drive belt location (P. 8-19)
11. Radiator cap (P. 8-6)
12. Battery (P. 8-16)
13. Power steering fluid reservoir (P. 8-14)
14. Relay box (P. 8-23)
15. Engine coolant reservoir (P. 8-6)
NOTE:
Your vehicle may not be equipped with
an engine cover.
Refer to the page number indicated in
parentheses for operating details.
LDI3693
Illustrated table of contents0-9

CAUTION
• Always connect positive (+) to posi-
tive (+) and negative (−) to body
ground (for example, strut mounting
bolt, engine lif t bracket, etc.) — not to
the battery.
• Make sure the jumper cables do not
touch moving parts in the engine
compartment and that the cable
clamps do not contact any other
metal.
5. Start the engine of the booster vehicle and let it run for a few minutes.
6.
Keep the engine speed of the booster ve-
hicle at about 2,000 rpm and start the
engine of the vehicle being jump started.
CAUTION
Do not keep the starter motor engaged
for more than 10 seconds. If the engine
does not start right away, place the ig-
nition switch in the OFF position and
wait 3 to 4 seconds before trying again.
7. Af ter starting the engine, carefully dis- connect the negative cable and then the
positive cable.
CAUTION
•
Do not push start this vehicle. The
three-way catalyst may be damaged.
• Automatic transmission models can-
not be push-started or tow-started.
Attempting to do so may cause
transmission damage.
WARNING
• Do not continue to drive if your ve-
hicle overheats. Doing so could cause
engine damage or a vehicle fire.
• To avoid the danger of being scalded,
never remove the radiator or coolant
reservoir cap while the engine is still
hot. When the radiator or coolant res-
ervoir cap is removed, pressurized
hot water will spurt out, possibly
causing serious injury.
• Do not open the hood if steam is
coming out.
If your vehicle is overheating (indicated by
an extremely high temperature gauge
reading), or if you feel a lack of engine
power, detect abnormal noise, etc. take the
following steps.
1. Move the vehicle safely off the road, ap- ply the parking brake and move the shif t
lever to P (Park).
Do not stop the engine.
2. Turn off the air conditioner. Open all the windows, move the heater or air condi-
tioner temperature control to maximum
hot and fan control to high speed.
PUSH STARTING IF YOUR VEHICLE OVERHEATS
In case of emergency6-13

3. Get out of the vehicle. Look and listen forsteam or coolant escaping from the ra-
diator before opening the hood. If steam
or coolant is escaping, turn off the en-
gine. Do not open the hood further until
no steam or coolant can be seen.
4. Open the engine hood.
WARNING
If steam or water is coming from the
engine, stand clear to prevent getting
burned.
5. Visually check drive belts for damage or looseness. Also check if the cooling fan
is running. The radiator hoses and radia-
tor should not leak water. If coolant is
leaking, the water pump belt is missing
or loose, or the cooling fan does not run,
stop the engine.
WARNING
Be careful not to allow your hands, hair,
jewelry or clothing to come into con-
tact with, or get caught in, engine belts
or the engine cooling fan. The engine
cooling fan can start at any time. 6. Af ter the engine cools down, check the
coolant level in the engine coolant res-
ervoir tank with the engine running. Add
coolant to the engine coolant reservoir
tank if necessary. Have your vehicle re-
paired. It is recommended that you visit
a NISSAN dealer for this service. When towing your vehicle, all jurisdictional
and local regulations for towing must be
followed. Incorrect towing equipment
could damage your vehicle. Towing in-
structions are available from a NISSAN
dealer. Local service operators are gener-
ally familiar with the applicable laws and
procedures for towing. To assure proper
towing and to prevent accidental damage
to your vehicle, NISSAN recommends hav-
ing a service operator tow your vehicle. It is
advisable to have the service operator
carefully read the following precautions:
WARNING
• Never ride in a vehicle that is being
towed.
• Never get under your vehicle af ter it
has been lif ted by a tow truck.
CAUTION
• When towing, make sure that the
transmission, axles, steering system
and powertrain are in working condi-
tion. Use dollies or flatbed if any of
the listed systems are not working.
• Always attach safety chains before
towing.
TOWING YOUR VEHICLE
6-14In case of emergency

8 Do-it-yourself
Maintenance precautions.......................8-2
Engine compartment check locations ...........8-4
Engine cooling system ..........................8-6
Checking engine coolant level ................8-7
Changing engine coolant ....................8-7
Engine oil .......................................8-8
Checking engine oil level .....................8-8
Changing engine oil and oil filter ..............8-8
Automatic Transmission Fluid (ATF) .............8-13
Power Steering Fluid (PSF) ......................8-14
Brake fluid ...................................... 8-14
Brake fluid ................................... 8-15
Windshield-washer fluid ........................8-15
Windshield-washer fluid reservoir ...........8-15
Battery......................................... 8-16
Jump starting ............................... 8-18
Variable voltage control system ................8-18
Drive belt ....................................... 8-19
Spark plugs .................................... 8-19
Replacing spark plugs ....................... 8-19Air cleaner
..................................... 8-20
In-cabin microfilter .......................... 8-20
Windshield wiper blades ........................8-21
Cleaning .................................... 8-21
Replacing ................................... 8-21
Brakes ......................................... 8-22
Fuses .......................................... 8-23
Engine compartment .......................8-24
Passenger compartment ...................8-25
Battery replacement ........................... 8-26
NISSAN Intelligent Key® ......................8-26
Lights .......................................... 8-28
Headlights .................................. 8-28
Fog lights (if so equipped) ...................8-28
Exterior and interior lights ...................8-29
Wheels and tires ............................... 8-32
Tire pressure ................................ 8-32
Tire labeling ................................. 8-36
T
ypes of tires ................................ 8-39
Tire chains .................................. 8-40
Changing wheels and tires ..................8-41

3.8L 6 cylinder (VQ38DD engine model)
(without idle stop)
1. Windshield-washer fluid reservoir
2. Fusible link
3. Fuse/Fusible link box
4. Fusible link and relay box
5. Engine oil filler cap
6. Engine oil dipstick
7. Brake fluid reservoir
8. Air cleaner
9. Drive belt location
10. Power steering fluid reservoir
11. Radiator cap
12. Battery
13. Engine coolant reservoir
NOTE:
Your vehicle may not be equipped with
an engine cover.
LDI3520
ENGINE COMPARTMENT CHECK
LOCATIONS
8-4Do-it-yourself

3.8L 6 cylinder (VQ38DD engine model)
(with idle stop)
1. Windshield-washer fluid reservoir
2. Fusible link and relay box
3. Fuse/Fusible link box
4. Fusible link
5. Engine oil filler cap
6. Engine oil dipstick
7. Brake fluid reservoir
8. Relay box
9. Air cleaner
10. Drive belt location
11. Radiator cap
12. Battery
13. Power steering fluid reservoir
14. Relay box
15. Engine coolant reservoir
NOTE:
Your vehicle may not be equipped with
an engine cover.
LDI3693
Do-it-yourself8-5

The engine cooling system is filled at the
factory with a pre-diluted mixture of 50%
Genuine NISSAN Long Life Antifreeze/
Coolant (blue) and 50% water to provide
year-round antifreeze and coolant protec-
tion. The antifreeze solution contains rust
and corrosion inhibitors. Additional engine
cooling system additives are not
necessary.
WARNING
• Never remove the radiator or coolant
reservoir cap when the engine is hot.
Wait until the engine and radiator
cool down. Serious burns could be
caused by high pressure fluid escap-
ing from the radiator. For additional
information on precautions, see “If
your vehicle overheats” (P. 6-13).
• The radiator and coolant reservoir
are equipped with a pressure type ra-
diator cap. To prevent engine dam-
age, use only a Genuine NISSAN ra-
diator cap.
CAUTION
• Never use any cooling system addi-
tives such as radiator sealer. Addi-
tives may clog the cooling system
and cause damage to the engine,
transmission and/or cooling system.
• When adding or replacing coolant, be
sure to use only Genuine NISSAN
Long Life Antifreeze/Coolant (blue)
or equivalent. Genuine NISSAN Long
Life Antifreeze/Coolant (blue) is pre-
diluted to provide antifreeze protec-
tion to -34° F (-37° C). If additional
freeze protection is needed due to
weather where you operate your ve-
hicle, add Genuine NISSAN Long Life
Antifreeze/Coolant (blue) concen-
trate following the directions on the
container. If an equivalent coolant
other than Genuine NISSAN Long Life
Antifreeze/Coolant (blue) is used, fol-
low the coolant manufacturer’s in-
structions to maintain minimum an-
tifreeze protection to -34° F (-37° C).
The use of other types of coolant so-
lutions other than Genuine NISSAN
Long Life Antifreeze/Coolant (blue)
or equivalent may damage the en-
gine cooling system. •
The life expectancy of the factory-fill
coolant is 105,000 miles (168,000 km)
or 7 years. Mixing any other type of
coolant other than Genuine NISSAN
Long Life Antifreeze/Coolant (blue)
(or equivalent coolant), including
Genuine NISSAN Long Life
Antifreeze/Coolant (green), or the
use of non-distilled water may re-
duce the life expectancy of the
factory-fill coolant. For additional in-
formation, see the "Maintenance and
schedules" section of this manual.
ENGINE COOLING SYSTEM
8-6Do-it-yourself