ECU TOYOTA CAMRY 2023 Workshop Manual

1994-1. Before driving
4
Driving
CAMRY_U
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■If you hear a squealing or scraping noise (brake pad wear limit indica-
tors)
Have the brake pads checked and replaced by your Toyota dealer as soon
as possible.
Rotor damage may result if the pads are not replaced when neede d.
It is dangerous to drive the vehicle when the wear limits of the brake pads
and/or those of the brake discs are exceeded.
■ When the vehicle is stopped
● Do not race the engine.
If the shift lever is any position other than P or N, the vehicle may acceler-
ate suddenly and unexpectedly, causing an accident.
● In order to prevent accidents due to the vehicle rolling away, always keep
depressing the brake pedal while the engine is running, and apply the
parking brake as necessary.
● If the vehicle is stopped on an incline, in order to prevent ac cidents caused
by the vehicle rolling forward or backward, always depress the brake pedal
and securely apply the parking brake as needed.
● Avoid revving or racing the engine.
Running the engine at high speed while the vehicle is stopped may cause
the exhaust system to overheat, which could result in a fire if combustible
material is nearby.

2014-1. Before driving
4
Driving
CAMRY_U
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When taking a nap in the vehicle
Always turn the engine off. Otherwise, if you accidentally move the shift
lever or depress the accelerator pedal, this could cause an acc ident or fire
due to engine overheating. Additionally, if the vehicle is parked in a poorly
ventilated area, exhaust gases may collect and enter the vehicl e, leading to
death or a serious health hazard.
■ When braking
● When the brakes are wet, drive more cautiously.
Braking distance increases when the brakes are wet, and this may cause
one side of the vehicle to brake differently than the other side. Also, the
parking brake may not securely hold the vehicle.
● If the brake booster device does not operate, do not follow oth er vehicles
closely and avoid hills or shar p turns that require braking.
In this case, braking is still possible, but the brake pedal should be
depressed more firmly than usual. Also, the braking distance will increase.
Have your brakes fixed immediately.
● Do not pump the brake pedal if the engine stalls.
Each push on the brake pedal uses up the reserve for the power-assisted
brakes.
● The brake system consists of 2 individual hydraulic systems; if one of the
systems fails, the other will still operate. In this case, the brake pedal
should be depressed more firmly than usual and the braking dist ance will
increase.
Have your brakes fixed immediately.
■ If the vehicle becomes stuck (AWD models)
Do not spin the wheels excessively when any of the tires is up in the air, or
the vehicle is stuck in sand, mud, etc. This may damage the driveline com-
ponents or propel the vehicle forward or backward, causing an accident.

2054-1. Before driving
4
Driving
CAMRY_U
WARNING
■Things that must not be carried in the trunk
The following things may cause a fire if loaded in the trunk:
●Receptacles containing gasoline
●Aerosol cans
■Storage precautions
Observe the following precautions.
Failure to do so may prevent the pedals from being depressed pr operly,
may block the driver’s vision, or may result in items hitting t he driver or
passengers, possibly causing an accident.
●Stow cargo and luggage in the trunk whenever possible.
●To prevent cargo and luggage from sliding forward during brakin g, do
not stack anything in the enlarged trunk. Keep cargo and luggag e low,
as close to the floor as possible.
●Do not place cargo or luggage in or on the following locations.
• At the feet of the driver
• On the front passenger or rea r seats (when stacking items)
• On the package tray
• On the instrument panel
• On the dashboard
• Tray that has no lid
●Secure all items in the occupant compartment.
●Fold-down type rear seat: When you fold down the rear seats, lo ng
items should not be placed dire ctly behind the front seats.
●Fold-down type rear seat: Never allow anyone to ride in the enl arged
trunk. It is not designe d for passengers. They should ride in their seats
with their seat belts properly fastened.
■Capacity and distribution
●Do not exceed the maximum axle weight rating or the total vehic le
weight rating.
●Even if the total load of occupant’s weight and the cargo load is less
than the total load capacity, do not apply the load unevenly. I mproper
loading may cause deterioration of steering or braking control which
may cause death or serious injury.

2144-2. Driving procedures
CAMRY_U
■Auto power off function
If the vehicle is left in ACCESSORY mode for more than 20 minut es or IGNI-
TION ON mode (with the engine is not running) for more than an hour with
the shift lever in P, the engine switch will automatically turn off. However, this
function cannot entirely prevent battery discharge. Do not leav e the vehicle
with the engine switch in ACCESSORY or IGNITION ON mode for lon g peri-
ods of time when the engine is not running.
■ Electronic key battery depletion
P. 145
■ Conditions affecting operation
P. 163
■ Notes for the entry function
P. 164
■ If the engine does not start
●The engine immobilizer system may not have been deactivated. ( P. 80)
Contact your Toyota dealer.
● Check that the shift lever is securely set in P. The engine may not start if the
shift lever is displaced out of P.
■ When “Check Fuel Cap” is displayed on the multi-information display
P. 247
■ When a message requesting the smart key system be inspected is dis-
played on the multi-information display
The system may be malfunctioning. Have the vehicle inspected by your
Toyota dealer immediately.
■ If the electronic key battery is depleted
P. 494
■ Operation of the engine switch
●If the switch is not pressed shortly and firmly, the engine swi tch mode may
not change or the engine may not start.
● If attempting to restart the engine immediately after turning t he engine
switch off, the engine may not start in some cases. After turni ng the engine
switch off, wait a few seconds before restarting the engine.
■ If the smart key system has been d eactivated in a customized setting
P. 559

2454-4. Refueling
4
Driving
CAMRY_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, touch an
unpainted metal surface to discharge any static electricity. It is important to
discharge static electricity before refueling because sparks resulting from
static electricity can cause fuel vapors to ignite while refueling.
● 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 loosened.
Wait until the sound cannot be heard before fully removing the cap. In hot
weather, pressurized fuel may spray out the filler neck and cau se 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 from 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.

2474-4. Refueling
4
Driving
CAMRY_U
■If the fuel filler door cannot be opened
■ When “Check Fuel Cap” is displayed on the multi-information dis play
The fuel tank cap may be unfastened or loose. Turn the engine switch off,
check the cap and tighten it securely. If the message remains, wait a few sec-
onds and then turn the engine switch off once again. Remove the cover inside the trunk and
pull the lever.
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.

3354-5. Using the driving support systems
4
Driving
CAMRY_U■
Conditions under which the system may not function correctly
●The BSM function may not detect vehicles correctly in the following condi-
tions:
• When the sensor is misaligned due to a strong impact to the se nsor or its
surrounding area
• When driving on a road surface that is wet with standing water during bad
weather, such as heavy rain, snow, or fog
• When mud, snow, ice, a sticker, etc. is covering the sensor or surround-
ing area on the rear bumper
• When there is a significant difference in speed between your v ehicle and
the vehicle that enters the detection area
• When a vehicle is in the detection area from a stop and remains in the detection area as your vehicle accelerates
• When driving up or down consecutive steep inclines, such as hills, a dip
on the road, etc.
• When driving on roads with sharp bends, consecutive curves, or uneven
surfaces
• When multiple vehicles are approaching with only a small gap b etween
each vehicle
• When vehicle lanes are wide, or when driving on the edge of a lane, and
the vehicle in an adjacent lane is far away from your vehicle
• When the vehicle that enters the detection area is traveling a t about the
same speed as your vehicle
• When there is a significant difference in height between your vehicle and
the vehicle that enters the detection area
• Directly after the BSM function is turned on
● Instances of the BSM function unnecessarily detecting a vehicle and/or
object may increase under the following conditions:
• When the sensor is misaligned due to a strong impact to the se nsor or its
surrounding area
• When the distance between your vehicle and a guardrail, wall, etc. that
enters the detection area is short
• When there is only a short distance between your vehicle and a following
vehicle
• When vehicle lanes are narrow, or when driving on the edge of a lane, and a vehicle traveling in a lane other than the adjacent lanes enters the
detection area
• When items such as a bicycle carrier are installed on the rear of the vehi-
cle
• When driving up and down consecutive steep inclines, such as hills, dips on the road, etc.
• When driving on roads with sharp bends, consecutive curves, or uneven
surfaces

4325-4. Other interior features
CAMRY_U
The HomeLink® wireless control system in your vehicle has 3 buttons
which can be programmed to operate 3 different devices. Refer to the
programming methods on the following pages to determine the
method which is approp riate for the device.
HomeLink
® indicator light
Garage door operation indica-
tors
Buttons
Garage door opener
: If equipped
The garage door opener can be programmed to operate garage
doors, gates, entry doors, door locks, home lighting systems,
security systems, and other devices.
System components
1
2
3

4516-2. Maintenance
CAMRY_U
6
Maintenance and care
Vehicle interior
ItemsCheck points
Accelerator pedal
• The accelerator pedal shouldmove smoothly (without uneven
pedal effort or catching).
Automatic transmission “Park”
mechanism• When parked on a slope and the
shift lever is in P, is the vehicle
securely stopped?
Brake pedal
• Does the brake pedal movesmoothly?
• Does the brake pedal have appro-
priate clearance from the floor? (P. 583)
• Does the brake pedal have the
correct amount of free play? (P. 583)
Brakes
• The vehicle should not pull to one
side when the brakes are applied.
• The brakes should work effec-
tively.
• The brake pedal should not feel spongy.
• The brake pedal should not get too close to the floor when the
brakes are applied.
Head restraints (adjustable type)• Do the head restraints move
smoothly and lock securely?
Indicators/buzzers• Do the indicators and buzzersfunction properly?
Lights • Do all the lights come on?
Parking brake
• Does the parking brake operate normally?
• When parked on a slope and the parking brake is on, is the vehicle
securely stopped?

4586-3. Do-it-yourself maintenance
CAMRY_U
WARNING
■Pre-driving check
Check that the hood is fully closed and locked.
If the hood is not locked properly, it may open while the vehic le is in motion
and cause an accident, which may result in death or serious inj u r y.
■ After installing the sup port rod into the slot
Make sure the rod supports the hood securely preventing it from falling
down onto your head or body.
NOTICE
■ When closing the hood
Be sure to return the support rod to its clip before closing the hood. Closing
the hood with the support rod not clipped could cause the hood to bend.