142 2−4. Using other driving systems
Sensor detection information
Certain vehicle conditions and the surrounding environment may affect
the ability of a sensor to correctly detect an obstacle. Particular instances
where this may occur are listed below.
There is dirt, snow or ice on a sensor.
A sensor is frozen.
A sensor is covered in any way.
The vehicle is leaning considerably to one side.
On an extremely bumpy road, on an incline, on gravel, or on grass.
The vicinity of the vehicle is noisy due to vehicle horns, motorcycle
engines, air brakes of large vehicles, or other loud noises producing
ultrasonic waves.
There is another vehicle equipped with parking assist sensors in the
vicinity.
A sensor is coated with a sheet of spray or heavy rain.
The vehicle is equipped with a fender pole or radio antenna.
A bumper or sensor receives a strong impact.
The vehicle is approaching a tall or right−angled curb.
In harsh sunlight or intense cold weather.
The area directly under the bumpers is not detected.
Objects lower than the sensors or thin stakes etc. may be detected ini−
tially, but as they draw closer, they may cease to be detected.
A towing hitch is mounted to the vehicle.
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 a sensor to be closer
than they are.
The shape of the obstacle may prevent a sensor from detecting it. Pay
particular attention to the following obstacles:
Wires, fences, ropes, etc.
Cotton, snow and other materials that absorb radio waves
Sharply−angled objects
Low obstacles
Tall obstacles with upper sections projecting outwards in the direction
of your vehicle
5
When trouble arises
329
5−1. Essential information
Event data recorder
In a crash or a near car crash event
The SRS airbag sensor assembly contains the EDR. In a crash or a
near car crash event, this device may record some or all of the follow−
ing information:
Engine speed
Whether the brake pedal was applied or not
Vehicle speed
To what extent the accelerator pedal was depressed
Position of the transmission shift lever
Whether the driver and front passenger wore seat belts or not
Driver ’s seat position
Front passenger ’s occupant classification
SRS airbag deployment data
SRS airbag system diagnostic data
Your Toyota’s Electronic Contro
l Unit (ECU) may contain another
EDR. There are a variety of driving situations which include activating
the VSC under which the VSC EDR will record certain information.
The VSC EDR may record some or all of the following information:
Behavior of the vehicle
Steering wheel angle
Your vehicle has computers that monitor and control certain aspects
of your vehicle. These computers assi
st in driving and maintaining
optimal vehicle performance.
Besides storing data useful for tr oubleshooting, there is an event
data recorder (EDR) that records data in a crash or a near car
crash event.
400
Alphabetical index
Intuitive parking assist
switch .................................. 139
Headlights switch .................. 131
Light switch ........................... 131
Power door lock switch ........... 33
Power window switch .............. 62
Rear differential lock
switch .................................. 152
Turn signal lights ................... 121
Window lock switch ................. 62
Wiper and washer ......... 133, 135
Tachometer............................... 124
Tail lights
Replacing light bulbs ............. 318
Switch.................................... 131
Wattage ................................. 371
Theft deterrent system
Engine immobilizer system ..... 68
Theft prevention labels ............ 70
Theft prevention labels.............. 70
Tire inflation pressure ............. 370
Tire information
Glossary ................................ 380
Size ....................................... 377
Tire identification number ...... 376
Uniform tire quality grading ... 378
Tires
Chains ................................... 170
Checking ............................... 287
If you have a flat tire .............. 340
Identification number ............. 376
Inflation pressure................... 370
Inflation pressure sensor ....... 288
Information ............................ 375
Replacing ...................... 287, 340
Rotating tires ......................... 287
Size ....................................... 370
Snow tires ............................. 170
Spare tire............................... 341
Tire pressure warning
system ........................ 287, 337
Warning light ......................... 334Tools ......................................... 340
Total load capacity .................. 168
Towing
Dinghy towing ....................... 182
Emergency towing ................ 322
Trailer towing ........................ 172
Traction control system .......... 156
TRAC ......................................... 156
Trip meter ................................. 124
Turn signal lights
Lever ..................................... 121
Replacing light bulbs ............. 315
Switch ................................... 121
Wattage................................. 371
Vanity mirrors .......................... 236
Vehicle identification
number ................................... 363
Vehicle stability control .......... 156
Voltmeter .................................. 124
VSC ........................................... 156
Warning buzzers
Key reminder......................... 336
Seat belt reminder................. 334
Warning lights
ABS ....................................... 332
Airbag system ....................... 332
Anti−lock brake system .......... 332
Automatic transmission fluid
temperature ........................ 332
Brake system ........................ 331
Charging system ................... 332
Driver’s seat belt ................... 334
Electronic engine control
system ................................ 332
Engine oil replacement ......... 334
Front passenger occupant
classification system ........... 332
Front passenger’s seat belt... 334
Low brake fluid ...................... 331
Low engine oil pressure ........ 332
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