2021 TOYOTA 4RUNNER ECU

681-1. For safe use
4RUNNER (U)
WARNING
■When installing a child restraint system
● Vehicles with third row seats: When using the LATCH anchors for a child
restraint system, move the seat as far back as possible, with the seatback
close to the child restraint system.
● When a booster seat is installed, always ensure that the should er belt is
positioned across the center of the child’s shoulder. The belt should be
kept away from the child’s neck, but not so that it could fall off the child’s
shoulder. Failing to do so may result in death or serious injur y in the event
of an accident or a sudden braking.
● Ensure that the belt and plate are securely locked and the seat belt is not
twisted.
● Shake the child restraint system left and right, and forward and backward
to ensure that it has been securely installed.
● After securing a child restraint system, never adjust the seat.
● Follow all installation instructions provided by the child restraint system
manufacturer.
● When securing some types of child restraint systems in second or third
row seats, it may not be possible to properly use the seat belt s in positions
next to the child restraint without interfering with it or affecting seat belt
effectiveness. Be sure your seat belt fits snugly across your shoulder and
low on your hips. If it does not, or if it interferes with the child restraint,
move to a different position. Failure to do so may result in de ath or serious
injury.
■ Do not use a seat belt extender
If a seat belt extender is used when installing a child restraint system, the
seat belt will not securely hold the child restraint system, which could cause
death or serious injury to the child or other passengers in the event of a sud-
den braking, sudden swerving or an accident.
■ To correctly attach a child restraint system to the anchors
When using the LATCH anchors, be sure that there are no foreign objects
around the anchors and that the seat belt is not caught behind the child
restraint system. Make sure the child restraint system is secur ely attached,
or it may cause death or serious injury to the child or other p assengers in
the event of a sudden braking or an accident.

691-1. For safe use
1
For safety and security
4RUNNER (U)
Exhaust gas precautions
Harmful substance to the human body is included in exhaust
gases if inhale.
WARNING
Exhaust gases include harmful carbon monoxide (CO), which is colorless and
odorless. Observe the following precautions.
Failure to do so may cause exhaust gases enter the vehicle and may lead to
an accident caused by light-headedness, or may lead to death or a serious
health hazard.
■ Important points while driving
● Keep the back door closed.
● If you smell exhaust gases in the vehicle even when the back do or is
closed, open the windows and have the vehicle inspected at your Toyota
dealer as soon as possible.
■ When parking
● If the vehicle is in a poorly ventilated area or a closed area, such as a
garage, stop the engine.
● Do not leave the vehicle with the engine on for a long time.
If such a situation cannot be avoided, park the vehicle in an o pen space
and ensure that exhaust fumes do not enter the vehicle interior .
● Do not leave the engine running in an area with snow build-up, or where it
is snowing. If snowbanks build up around the vehicle while the engine is
running, exhaust gases may collect and enter the vehicle.
■ Exhaust pipe
The exhaust system needs to be checked periodically. If there is a hole or
crack caused by corrosion, damage to a joint or abnormal exhaust noise, be
sure to have the vehicle inspected and repaired by your Toyota dealer.

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4RUNNER (U)
1-2. Emergency assistance
■System componentsMicrophone
“SOS” button
LED light indicators
Safety Connect
: If equipped
Safety Connect is a subscription-based telematics service that
uses Global Positioning System ( GPS) data and embedded cel-
lular technology to provide saf ety and security features to sub -
scribers. Safety Connect is s upported by Toyota’s designated
response center, which operates 24 hours per day, 7 days per
week.
Safety Connect service is avai lable by subscription on select,
telematics hardware -equipped vehicles.
By using the Safety Connect service, you are agreeing to be
bound by the Telematics Subscription Service Agreement and
its Terms and Conditions, as in e ffect and amended from time to
time, a current copy of which is available at Toyota.com in the
United States, Toyotapr.com in Puerto Rico and Toyota.ca in
Canada. All use of the Safety Connect service is subject to suc h
then-applicable Terms and Conditions.
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711-2. Emergency assistance
1
For safety and security
4RUNNER (U)■
Services
Subscribers have the following Safety Connect services availabl
e:
● Automatic Collision Notification
*
Helps drivers receive necessary response from emergency ser-
vice providers. ( P. 7 3 )
*: U.S. Patent No. 7,508,298 B2
● Stolen Vehicle Location
Helps drivers in the eve nt of vehicle theft. (P. 73)
● Emergency Assistanc e Button (“SOS”)
Connects drivers to response-center support. ( P. 7 3 )
● Enhanced Roadside Assistance
Provides drivers various on-road assistance. (P. 7 4 )
■Subscription
After you have signed the Telemati cs Subscription Service Agree-
ment and are enrolled, you c an begin receiving services.
A variety of subscription terms are available for purchase. Con tact
your Toyota dealer, call the following appropriate Customer Exp eri-
ence Center or push the “SOS” button in your vehicle for furthe r
subscription details.
• The United States 1-800-331-4331
• Canada
1-888-869-6828
• Puerto Rico 1-877-855-8377

731-2. Emergency assistance
1
For safety and security
4RUNNER (U)■
Automatic Collision Notification
In case of either airbag deployme
nt or severe rear-end collision, the
system is designed to automatically call the response center. T he
responding agent receives the v ehicle’s location and attempts to
speak with the vehicl e occupants to assess the level of emergency.
If the occupants are unable to communicate, the agent automati-
cally treats the call as an emergency, contacts the nearest eme r-
gency services provider to descr ibe the situation, and requests that
assistance be sent to the location.
■Stolen Vehicle Location
If your vehicle is stolen, Safety Connect can work with local author-
ities to assist them in locating and recovering the vehicle. Af ter filing
a police report, call the Customer Experience Center at 1-800-3 31-
4331 in the United States, 1-877-8 55-8377 in Puerto Rico or 1-888-
869-6828 in Canada, and follow the prompts for Safety Connect t o
initiate this service.
In addition to assisting law enforcement with recovery of a sto len
vehicle, Safety-Connect-equipped vehicle location data may, und er
certain circumstances, be shared with third parties to locate y our
vehicle. Further information is a vailable at Toyota.com in the United
States, Toyotapr.com in Puerto Rico and Toyota.ca in Canada.
■Emergency Assistance Button (“SOS”)
In the event of an emergency on t he road, push the “SOS” button to
reach the Safety Connect respons e center. The answering agent
will determine your vehicle’s loca tion, assess the emergency, and
dispatch the necessary assistanc e required.
If you accidentally press the “SOS” button, tell the response-c enter
agent that you are not experiencing an emergency.
Safety Connect services

751-2. Emergency assistance
1
For safety and security
4RUNNER (U)
■Certification for Safety Connect

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4RUNNER (U)
1-3. Theft deterrent system
Vehicles without a smart key system
The indicator light flashes after
the key has been removed from
the engine switch to indicate that
the system is operating.
The indicator light stops flashing
after the registered key has been
inserted into the engine switch to
indicate that the system has been
canceled.
Vehicles with a smart key system
The indicator light flashes aft er the engine switch has been tu rned off
to indicate that the system is operating.
The indicator light stops flashi ng after the engine switch has been
turned to ACCESSORY or IGNITION ON mode to indicate that the
system has been canceled.
■ System maintenance
The vehicle has a maintenance-free type engine immobilizer syst em.
■ Conditions that may cause the system to malfunction
●If the grip portion of the key is in contact with a metallic ob ject
● If the key is in close proximity to or touching a key to the security system
(key with a built-in transponder chip) of another vehicle
Engine immobilizer system
The vehicle’s keys ha ve built-in transponder chips that prevent
the engine from starting if a key has not been previously regis -
tered in the vehicle’s on-board computer.
Never leave the keys inside the vehicle when you leave the vehi-
cle.
This system is designed to help prevent vehicle theft but does
not guarantee absolute security against all vehicle thefts.

771-3. Theft deterrent system
1
For safety and security
4RUNNER (U)■
Certifications for the engine immobilizer system (vehicles with out a
smart key system)
For vehicles sold in the U.S.A.
For vehicles sold in Canada