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188 2−4. Using other driving systems
nSensor detection information
lCertain vehicle conditions and the surrounding environment may affect
the ability of the sensor to correctly detect obstacles. Particular instances
where this may occur are listed below.
There is dirt, snow or ice on the sensor. (Wiping the sensor will resolve
this problem.)
The sensor is frozen. (Thawing the sensor will resolve this problem.)
The sensor is covered in any way.
In harsh sunlight or intense cold weather.
When driving on bumpy, sloped or gravel roads, or over grass.
If there is something producing ultrasonic waves nearby, such as
another vehicle’s horn, motorcycle engine noise, air braking sound
from heavy−duty vehicles, or another vehicle using the park assist sys−
tem.
In heavy rain, or if water is splashed on the sensors.
The vehicle is leaning considerably to one side.
If a commercial fender pole or radio antenna is installed.
If moving towards a high curb or a curb corner.
If towing eyelet is installed on your vehicle.
The bumper or sensor receives a strong impact.
A non−genuine Toyota suspension (lowered suspension etc.) is
installed.
In addition to the examples above, there are instances in which, because of
their shapes, signs and other objects may be judged by the sensor to be
closer than they are.
lThe shape of the obstacle may prevent the sensor from detecting it. Pay
particular attention to the following obstacles.
Thin objects such as wire, fencing or rope.
Objects that absorb sound waves, such as cotton or snow.
Objects with sharp corners.
Low objects.
Objects where the upper section projects out over the lower section.
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417
4−3. Do−it−yourself maintenance
4
Maintenance and care
Fuse layout and amperage ratings
n
Engine compartment
FuseAmpere Circuit
1 A/F15 A
A/F heater
2 HORN10 A
Horn
3 EFI MAIN25 A
EFI, A/F heater
4 IG2 MAIN30 A
Injector, ignition, meter
5 RR A/C50 A
No circuit
6 SEAT−A/C LH25 A
No circuit
7 RR S/HTR20 A
Rear seat heater
8 DEICER20 A
Windshield wiper de−icer
9 CDS FAN25 A
Condenser fan
10 TOW TAIL30 A
Towing tail
11 RR P/SEAT30 A
No circuit
12 ALT−CDS10 A
Alternator condenser
13 FR FOG15 A
Front fog lights
14 SECURITY5 A
Security horn
15 SEAT−A/C RH25 A
No circuit
Page 470 of 531

476
5−2. Steps to take in an emergency
If the engine will not star t
If the engine still does not start after following the correct starting
procedure ( P. 149) or releasing the steering lock ( P. 151), confirm
the following points.
nThe engine will not start when the starter motor operates
normally.
One of the following may be the cause of the problem.
l
There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
lThe engine may be flooded.
Try to restart the engine once more following correct starting
procedures. (P. 150)
l
There may be a malfunction inthe engine immobilizer system.
(P. 9 3 )
n
The starter motor turn over slowly, the interior lights and
headlights are dim, or the horn does not sound or sounds at
a low volume.
One of the following may be the cause of the problem.
l
The battery may be discharged. ( P. 484)
lThe battery terminal connections may be loose or corroded.
n
The starter motor does not turn over.
The engine starting system may
be malfunctioning due to an
electrical problem such as an open circuit or a blown fuse. How−
ever, an interim measure is available to start the engine.
( P. 477)
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5
When trouble arises
477 5−2. Steps to take in an emergency
Emergency start function
When the engine does not start, the following steps can be used as
an interim measure to start the engine if the “ENGINE START STOP”
switch is functioning normally.
Set the parking brake.
Put the shift lever in “P”.
Set the “ENGINE START ST
OP” switch to ACCESSORY
mode.
Press and hold the “ENGINE START STOP” switch about 15
seconds while depressing the brake pedal firmly.
Even if the engine can be start
ed using the above st eps, the system
may be malfunctioning. Have the vehicle checked by your Toyota
dealer. nThe starter motor does not turn over, the interior lights and
headlights do not turn on, or the horn does not sound.
One of the following may be the cause of the problem.
l
One or both of the battery terminals may be disconnected.
l
The battery may be discharged. ( P. 484)
lThere may be a malfunction in the steering lock system.
Contact your Toyota dealer if the problem cannot be repaired, or if
repair procedures are unknown.
STEP1
STEP 2
STEP 3
STEP 4
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538
What to do if...
What to do if...
A tire puncturesP. 463If you have a flat tire
The engine does not start
P. 9 3Engine immobilizer system
P. 476If the engine will not start
P. 484If the battery is discharged
The shift lever cannot be
moved outP. 478If the shift lever cannot be shifted
The engine coolant temperature
gauge enters the red zone
Steam can be seen coming
from under the hood
P. 488If your vehicle overheats
The key is lostP. 479If you lose your keys
The battery runs outP. 484If the battery is discharged
The doors cannot be lockedP. 4 3Side doors
P. 4 8Back doors
The horn begins to soundP. 9 7Alarm
The vehicle is stuck in mud
or sandP. 491If the vehicle becomes stuck
The warning light or indi−
cator light comes onP. 449If the warning light turns on