Pre Collision System PCS | Toyota Safety Sense | Toyota

Toyota Safety Sense pre-collision system overview from Toyota. Toyota Safety Sense™ C: Pre-Collision System (PCS)- Vehicle Detection
With TSS-C1, Pre-Collision System (PCS) uses an in-vehicle camera and laser to help detect the vehicle in front of your vehicle. As there is a limit to the degree of recognition accuracy and control performance that this system can provide, do not overly rely on this system. This system will not prevent collisions or lessen collision damage or injury in every situation. Do not use PCS instead of normal braking operations under any circumstances. Do not attempt to test the operation of the pre-collision system yourself, as the system may not operate or engage, possibly leading to an accident. In some situations, such as when driving in inclement weather such as heavy rain, fog, snow or a sandstorm or while driving on a curve and for a few seconds after driving on a curve, a vehicle may not be detected by the laser and camera sensors, preventing the system from operating or engaging properly. Refer to a Toyota Owner's Manual for a list of additional situations in which the system may not operate properly.
• When PCS determines that the possibility of a frontal collision with that vehicle is high, it prompts the driver to take evasive action and brake, by using an audio and visual alert
o These alerts are designed to operate when the vehicle speed is between approximately 7 to 85 miles-per-hour (MPH) for potential collisions with a vehicle (Alerts are designed to function prior to brake function at speeds between approximately 10-85 MPH. Alert and brake functions may occur simultaneously for PCS2 operational speeds below 10 MPH.)


• If the driver notices the hazard and brakes, the system may provide additional braking force using Brake Assist. This system may prime the brakes and may apply greater braking force in relation to how strongly the brake pedal is depressed
• If the driver does not brake in a set time and the system determines that the possibility of a frontal collision with a preceding vehicle is extremely high, the system may automatically apply the brakes, reducing speed in order to help the driver reduce the impact and in certain cases avoid the collision

o The PCS included with the TSS-C package may operate the automatic braking feature at speeds between approximately 7 to 50 MPH for potential collisions with a preceding vehicle
o May reduce vehicle speed by up to 19 MPH for potential collisions with a preceding vehicle


• If the vehicle is stopped by the operation of the pre-collision brake function, the operation of the pre-collision brake hold will be canceled (brake will be released) after the vehicle has been stopped for approximately two seconds to allow the vehicle to move, if necessary. The driver of the vehicle must then determine whether brake or gas pedal application, or neither, is appropriate for the conditions

The pre-collision brake function may not operate if certain operations are performed by the driver. If the accelerator pedal is being depressed strongly or the steering wheel is being turned, the system may determine that the driver is taking evasive action and possibly prevent the pre-collision braking function from operating. In some situations, while the pre-collision brake function is operating, operation of the function may be canceled if the accelerator pedal is depressed strongly or the steering wheel is turned and the system determines that the driver is taking evasive action.

The following setting(s) can be adjusted (Varies by vehicle and type of TSS):

• PCS Alert Timing (Alert timing only, brake operation remains the same): Far - Mid (default) - Near
• Pre-Collision System: Turn function ON or OFF. If PCS2 is turned OFF by the driver, PCS will default back to ON with the Mid alert timing each time the ignition is cycled.

Refer to a Toyota Owner's Manual for additional information on PCS operation, settings adjustments, limitations, and precautions.


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