2023 TOYOTA HILUX coolant level

4937-3. Do-it-yourself maintenance
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7
Maintenance and care
■If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine coolant reservoir cap, intercooler
coolant reservoir cap (if equipped), drain cock and water pump. If you cannot
find a leak, have any authorized Toyota retailer or Toyota authorized repairer,
or any reliable repairer test the cap and check for leaks in the cooling system.
Check the radiator, condenser and intercooler coolant radiator/inter-
cooler and clear away any foreign objects. If any of the above parts is
extremely dirty or you are not sure of their condition, have your vehi-
cle inspected by any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
WARNING
■ When the engine is hot
Do not remove the radiator cap (if equipped), the engine coolant reservoir
cap or intercooler coolant reservoir cap (if equipped).
The cooling system may be under pressure and may spray hot coolant if the
cap is removed, causing serious injuries, such as burns.
NOTICE
■ When adding coolant
Coolant is neither plain water nor straight antifreeze. The correct mixture of
water and antifreeze must be used to provide proper lubrication, corrosion
protection and cooling. Be sure to read the antifreeze or coolant label.
■ If you spill coolant
Be sure to wash it off with water to prevent it from damaging parts or paint.
■ Notice on coolant quality
Do not use improper coolant. If improper coolant is used, the engine cooling
system may be damaged.
Radiator, condenser and intercooler coolant radiator/intercooler
(if equipped)
WARNING
■ When the engine is hot
Do not touch the radiator, condenser or intercooler coolant radiator/inter-
cooler as they may be hot and cause serious injuries, such as burns.

5648-2. Steps to take in an emergency
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If you think something is wrong
●Fluid leaks under the vehicle.
(Water dripping from the air conditioning after use is normal.)
● Flat-looking tires or uneven tire wear
● Engine coolant temperature gauge needle continually points higher
than normal.
● Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the engine
● Engine missing, stumbling or running roughly
● Appreciable loss of power
● Vehicle pulls heavily to one side when braking
● Vehicle pulls heavily to one side when driving on a level road
● Loss of brake effectiveness, spongy feeling, pedal almost touches
the floor
If you notice any of the following symptoms, your vehicle proba-
bly needs adjustment or repair. Contact any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer as
soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms

5798-2. Steps to take in an emergency
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8
When trouble arises
■If a message that indicates the malfunction of front camera is shown
The following systems may be suspended until the problem shown in the
message is resolved. ( P. 270, 566)
● PCS (Pre-Collision System)*
●LDA (Lane Departure Alert With Yaw Assist Function)*
●RSA (Road Sign Assist)*
●Dynamic radar cruise control*
*: If equipped
■ If a message that indicates the malfunction of radar sensor is shown
The following systems may be suspended until the problem shown in the
message is resolved. ( P. 270, 566)
● PCS (Pre-Collision System)*
●LDA (Lane Departure Alert With Yaw Assist Function)*
●Dynamic radar cruise control*
*: If equipped
■ If “See owner’s manual” is shown
● If the following messages are shown, follow the instructions accordingly.
• “Engine Coolant Temp High Stop in a Safe Place” ( P. 610)
• “Transmission fluid temp high” ( P. 237)
• “Water accumulation in fuel filter” ( P. 499)
• “AdBlue Level Low Fill up AdBlue in 2400 km” ( P. 502)
• “AdBlue level Low No start in 800 km Top up AdBlue” ( P. 502)
• “AdBlue empty Unable to Restart Engine Fill up AdBlue” ( P. 502)
•“DPF full” ( P. 370)
• “Front Camera Temporarily Unavailable” ( P. 270)
● If “Smart Entry & Start System malfunction” is shown, this may be a mal-
function.
Immediately have the vehicle inspected by any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer.
● If “Low Braking Power Stop in a Safe Place” is shown, there may be a mal-
function. Immediately stop the vehicle in a safe place and contact any
authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer. Continuing to drive the vehicle may be dangerous.
● If the following messages are shown, there may be a malfunction. Immedi-
ately stop the vehicle in a safe place and contact any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer.
• “Charging System Malfunction Stop in a Safe Place”
• “Oil Pressure Low Stop in a Safe Place”

6118-2. Steps to take in an emergency
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When trouble arises
The coolant level is satisfactory if it is between the “F” and “L” lines
on the reservoir.
4
Reservoir
“F” line
“L” line
Radiator cap (if equipped)
1
2
3
4
Engine coolant (gasoline
engine)
Engine coolant (diesel engine)
Intercooler coolant (if equipped)

665Alphabetical index
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Driving
Break-in tips .......................... 194
Correct posture ....................... 38
Procedures............................ 190
Winter drive tips .................... 373
Dynamic radar cruise
control .................................... 300
Function ................................ 300
Warning message ................. 580
Eco Driving Indicator....... 124, 126
Emergency flashers................. 554
Electronic key
If the electronic key does
not operate properly ........... 600
Replacing the battery ............ 516
Emergency, in case of
If a warning buzzer
sounds ................................ 566
If a warning light turns on ...... 566
If the electronic key does
not operate properly ........... 600
If the engine will not start ...... 598
If the vehicle battery is
discharged .......................... 604
If the vehicle is submerged or
water on the road is
rising ................................... 557
If you have a flat tire.............. 581
If you lose your keys ............. 149
If you run out of fuel and
the engine stalls.................. 614
If you think something is
wrong .................................. 564
If your vehicle becomes
stuck ................................... 615
If your vehicle has to be
stopped in an
emergency.......................... 555
If your vehicle needs to be
towed .................................. 559
If your vehicle overheats ....... 610
Engine
“ACC” position ...................... 220
Compartment ........................ 486
Engine switch................ 219, 222
Hood ..................................... 484
How to start the
engine......................... 219, 222
Identification number ............ 625
If the engine will not start ...... 598
If you run out of fuel and the
engine stalls ....................... 614
If your vehicle has to be
stopped in an
emergency.......................... 555
Ignition switch
(engine switch) ........... 219, 222
Overheating .......................... 610
Engine coolant
Capacity ................................ 634
Checking ............................... 492
Preparing and checking
before winter....................... 373
Engine coolant
temperature gauge ................ 129
Engine immobilizer system .... 113
Engine oil
Capacity ................................ 628
Checking ............................... 489
Oil level warning light ............ 570
Oil pressure warning light ..... 566
Preparing and checking
before winter....................... 373
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