2021 TOYOTA 4RUNNER fuel cap

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4RUNNER (U)4-1. Before driving
Driving the vehicle ............. 176
Cargo and luggage............ 186
Vehicle load limits ............. 191
Trailer towing..................... 192
Dinghy towing.................... 208
4-2. Driving procedures Engine (ignition) switch (vehicles without a
smart key system) ........... 209
Engine (ignition) switch (vehicles with a
smart key system) ........... 212
Automatic transmission ..... 218
Turn signal lever................ 223
Parking brake .................... 224
4-3. Operating the lights and wipers
Headlight switch ................ 225
Automatic High Beam ....... 230
Fog light switch ................. 234
Windshield wipers and washer ............................ 236
Rear window wiper and washer ............................ 239 4-4. Refueling
Opening the fuel tank cap................................... 242
4-5. Using the driving support systems
Toyota Safety Sense P ...... 245
PCS (Pre-Collision System) ........................... 254
LDA (Lane Departure Alert) ................................ 264
Dynamic radar cruise control.............................. 272
Intuitive parking assist ....... 285
Four-wheel drive system (part-time 4WD
models)............................ 292
Four-wheel drive system (full-time 4WD
models)............................ 296
Active traction control system ............................. 300
AUTO LSD system (2WD models) ................. 302
Rear differential lock system ............................. 304
Downhill assist control system ............................. 307
Crawl Control ..................... 310
Multi-terrain Select............. 313
Driving assist systems ....... 320
4-6. Driving tips Winter driving tips .............. 329
Off-road precautions .......... 333
4Driving

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4RUNNER (U)
Pictorial index
Pictorial index
■
Exterior
Side doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 110
Locking/unlocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 110
Opening/closing the door glasses . . . . . . . . . . . . . . . . . . . . . . P. 162
Locking/unlocking by using the mechanical key
* . . . . . . . . . . P. 507
Warning lights/warning messages . . . . . . . . . . . . . . . . . . P. 476, 484
Back door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 131
Locking/unlocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 131
Opening/closing the door glasses . . . . . . . . . . . . . . . . . . . . . . P. 166
Warning lights/warning messages . . . . . . . . . . . . . . . . . . P. 476, 484
Outside rear view mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 160
Adjusting the mirror angle . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 160
Folding the mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 160
Defogging the mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 342, 349
Windshield wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 236
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . P. 329
Fuel filler door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 242
Refueling method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 242
Fuel type/fuel tank capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 522
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Driving4
4RUNNER (U)4-1. Before driving
Driving the vehicle ............. 176
Cargo and luggage ........... 186
Vehicle load limits ............. 191
Trailer towing..................... 192
Dinghy towing ................... 208
4-2. Driving procedures Engine (ignition) switch (vehicles without a
smart key system) ........... 209
Engine (ignition) switch (vehicles with a
smart key system) ........... 212
Automatic transmission ..... 218
Turn signal lever................ 223
Parking brake .................... 224
4-3. Operating the lights and wipers
Headlight switch ................ 225
Automatic High Beam ....... 230
Fog light switch ................. 234
Windshield wipers and washer ............................ 236
Rear window wiper and washer ............................ 239 4-4. Refueling
Opening the fuel tank cap .................................. 242
4-5. Using the driving support systems
Toyota Safety Sense P ..... 245
PCS (Pre-Collision System)........................... 254
LDA (Lane Departure Alert) ............................... 264
Dynamic radar cruise control ............................. 272
Intuitive parking assist....... 285
Four-wheel drive system (part-time 4WD
models) ........................... 292
Four-wheel drive system (full-time 4WD
models) ........................... 296
Active traction control system ............................ 300
AUTO LSD system (2WD models) ................. 302
Rear differential lock system ............................ 304
Downhill assist control system ............................ 307
Crawl Control .................... 310
Multi-terrain Select ............ 313
Driving assist systems ...... 320
4-6. Driving tips Winter driving tips ............. 329
Off-road precautions ......... 333

1864-1. Before driving
4RUNNER (U)
Cargo and luggage
Take notice of the following information about storage precau-
tions, cargo capacity and load:● Stow cargo and luggage in the luggage compartment whenever
possible.
● Be sure all items are secured in place.
● To maintain vehicle balance while driving, position luggage evenly
within the luggage compartment.
● For better fuel economy, do no t carry unnecessary weight.

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4RUNNER (U)
4-4. Refueling
●Turn the engine switch to the “LOCK” position and ensure that a ll
the doors and windows are closed.
● Confirm the type of fuel.
■Fuel types
P. 530
■ Fuel tank opening for unleaded gasoline
To help prevent incorrect fueling, your vehicle has a fuel tank opening that
only accommodates the special nozzle on unleaded fuel pumps.
■ If the malfunction indicator lamp illuminates
The malfunction indicator lamp may illuminate erroneously if re fueling is per-
formed repeatedly when the fuel tank is nearly full.
Opening the fuel tank cap
Perform the following steps to open the fuel tank cap:
Before refueling the vehicle

2434-4. Refueling
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Driving
4RUNNER (U)
WARNING
■When refueling the vehicle
Observe the following precautions while refueling the vehicle. Failure to do
so may result in death or serious injury.
● After exiting the vehicle and before opening the fuel door, tou ch an
unpainted metal surface to discharge any static electricity. It is important to
discharge static electricity before refueling because sparks re sulting from
static electricity can cause fuel vapors to ignite while refuel ing.
● Always hold the grips on the fuel tank cap and turn it slowly t o remove it.
A whooshing sound may be heard when the fuel tank cap is loosen ed.
Wait until the sound cannot be heard before fully removing the cap. In hot
weather, pressurized fuel may spray out the filler neck and cause injury.
● Do not allow anyone that has not discharged static electricity from their
body to come close to an open fuel tank.
● Do not inhale vaporized fuel.
Fuel contains substances that are harmful if inhaled.
● Do not smoke while refueling the vehicle.
Doing so may cause the fuel to ignite and cause a fire.
● Do not return to the vehicle or touch any person or object that is statically
charged.
This may cause static electricity to build up, resulting in a p ossible ignition
hazard.
■ When refueling
Observe the following precautions to prevent fuel overflowing f rom the fuel
tank:
● Securely insert the fuel nozzle into the fuel filler neck.
● Stop filling the tank after the fuel nozzle automatically click s off.
● Do not top off the fuel tank.
NOTICE
■Refueling
Do not spill fuel during refueling.
Doing so may damage the vehicle, such as causing the emission c ontrol
system to operate abnormally or damaging fuel system components or the
vehicle’s painted surface.

2444-4. Refueling
4RUNNER (U)
Open the fuel filler door.
Turn the fuel tank cap slowly to
open. Hang the fuel tank cap on
the back o f the fuel filler door.
After refueling, turn the fuel tank
cap until you hear a click. Once
the cap is released, it will turn
slightly in the opposite direction.
Opening the fuel tank cap
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Closing the fuel tank cap
WARNING
■ When replacing the fuel tank cap
Do not use anything but a genuine Toyota fuel tank cap designed for your
vehicle. Doing so may cause a fire or other incident which may result in
death or serious injury.

4036-2. Maintenance
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Maintenance and care
4RUNNER (U)
The OBD system determines that a problem exists somewhere in the
emission control system. Your vehicle may not pass the I/M test and
may need to be repaired. Contact your Toyota dealer to service the
vehicle.
● When the battery is disc onnected or discharged
Readiness codes that are set duri ng ordinary driving are erased.
Also, depending on your driving habits, the readiness codes may
not be completely set.
● When the fuel tan k cap is loose
The malfunction indicator lamp comes on indicating a temporary
malfunction and your vehicle m ay not pass the I/M test.
The error code in th e OBD system will not be cleared unless the vehi-
cle is driven 40 or more times.
Contact your Toyota dea ler to prepare the vehicle for re-testin g.
Emission inspection and maintenance (I/M)
programs
Some states have vehicle emission inspection programs which
include OBD (On Board Diagnos tics) checks. The OBD system
monitors the operation of t he emission control system.
If the malfunction indicator lamp comes on
Your vehicle may not pass the I/M test in the following situations:
When the malfunction indicator lamp still remains on after sev-
eral driving trips
If your vehicle does not pass the I/M test