Alerts
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| Signal Name | Description | Condition | Impact |
|---|---|---|---|
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Invalid Data Received From Air Bag Control Module : Invalid Yaw Signal Status.
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Inertial signal failed plausibility/integrity checks
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May fault VDC/TC, ABS performance degradation
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Invalid Data Received From Air Bag Control Module : Invalid Yaw Signal Status.
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Yawrate signal received from RCM exceeds message latency specification
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May fault VDC/TC, ABS performance degradation
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Steering Wheel Position Sensor: Plausibility fault.
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This monitoring detects a wrong sign of steering angle signal. The yaw rate calculated from steering angle and the yaw rate calculated from the wheel speed sensors are compared. If the measured yaw rate fits to the model yaw rate positive integrals (IVzLwVA and IVzLwHA) are calculated but if the negative values fits the integrals will become negative. A fault is determined if the integral value is negative and forward driving is recognized. This fault will cause a release test in the following ignition cycle to assure that the sensor is build in correctly. This fault can also be caused by swapped WSS lines at one axle. It requires a release check in the following ignition cycle to prevent system release when the fault is still present. The conditions for release is positive integrals (IVzLwVA and IVzLwHA) > +180 deg.
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May fault VDC/TC, ABS performance degradation
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Steering Wheel Position Sensor: Plausibility fault.
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The monitoring checks for a physically plausible steering angle signal and consists of following parts:- Sas range monitoringReceived raw sensor hardware value is higher than the maximum, physical steering wheel turn from zero-position to lock in the vehicle (LwAnschlMax) + an additional robustness tolerance value (typical 90 deg)- Sas gradient monitoringIf the signal gradient (steering angle velocity) from one 20 ms-cycle to another is higher than 40 deg for 2 SAS Messages (60 deg for more than 2 SAS messages or no SAS message counter) or - change of this gradient (steering angle acceleration) is higher than 30 deg a failure will be set.- Sas plausibility versus yaw rateThe difference between measured steering angle signal and model value calculated from yaw rate signal is evaluated for fault detection. Dependent on the driving conditions failures in size of (10 + 60 [m/s] / velocity [m/s]) deg at steering angle are recognized through three possible recognition paths evaluating stable driving conditions. This is to prevent a fault recognition due to unstable driving.When the difference is caused by a fault of the steering angle sensor a steering sensor angle fault will be entered. The sensor - yaw rate sensor(YRS) or steering angle sensor(SAS) - showing the largest deviation to the reference yaw rate is marked as faulty.
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May fault VDC/TC, ABS performance degradation
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Steering Wheel Position Sensor: Adjustment not possible (Offset too large).
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Steering offset received from EPAS outside of threshold
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May fault VDC/TC, ABS performance degradation
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Steering Wheel Position Sensor: Constant signal detected.
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EPAS3P_internalSAS is frozen on CAN
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May fault VDC/TC, ABS performance degradation
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Invalid Data Received From Steering Angle Sensor Module: Invalid Signal Status.
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EPAS3P_internalSAS fails plausibility check for center position
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May fault VDC/TC, ABS performance degradation
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Invalid Data Received From Steering Angle Sensor Module: Invalid Signal Status.
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EPAS3P_internalSASQF is received as invalid
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May fault VDC/TC, ABS performance degradation
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The Electronic Stability Program (ESP) detects that the vehicle is skidding while the wheels are locked.
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The ESP detects the vehicle is skidding with locked wheels.
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No expected impact on vehicle functionality. The vehicle should be driven with caution due to the road conditions.
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External Brake Request (EBR) is active. This feature manages the brake commands for Autopilot and vehicle comfort features, such as vehicle hold.
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EBR is active.
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No expected impact on vehicle functionality.
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Brake Disk Wipe (BDW) is active. This feature will help keep the brakes dry during cold and/or wet conditions.
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BDW is active.
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No expected impact on vehicle functionality.
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Regenerative Traction Control is active. The Electronic Stability Program (ESP) may try to prevent wheel slips under regenerative braking.
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Regenerative Traction Control is active.
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No expected impact on vehicle functionality. The vehicle should be driven with caution due to the road conditions.
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Roll Over Mitigation (RMI) is active. The Electronic Stability Program (ESP) may activate the brakes to help stabilize the vehicle.
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RMI is active.
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The ESP may attempt to prevent the vehicle from rolling over by engaging the brakes.
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The Electronic Stability Program (ESP) detects that the brake pressure is too low for the given brake pedal stroke, causing the Hydraulic Brake Boost (HBB) to be activated.
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The HBB is activated because the brake pressure is too low for a given brake pedal stroke.
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Braking performance may be reduced. The ESP pump may be activated to increase the brake pressure.
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The Electronic Stability Program (ESP) detects that the one or more of the brakes are faded, causing Hydraulic Fade Compensation (HFC) to be activated.
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HFC is activated because all of the following conditions have been met: (1) the master cylinder pressure exceeds a certain pressure; (2) the Anti-lock Braking System (ABS) is not active; (3) the vehicle does not decelerate in time.
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Braking performance may be reduced due to faded brakes. The ESP pump may be activated to increase the brake pressure.
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The Electronic Stability Program (ESP) determines that an emergency stop may be required, causing the Hydraulic Brake Assist (HBA) to be activated. The ESP may also increase the brake pressure by running the ESP pump.
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The HBA is activated as the operating speed of the brake pedal exceeds the maximum threshold.
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The ESP may increase the brake pressure.
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Trailer Sway Mitigation (TSM) is activated as the Electronic Stability Program (ESP) detects the vehicle and trailer may be swaying. The ESP may activate the brakes to help stabilize the vehicle and trailer.
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TSM is active.
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The ESP may activate the brakes to help prevent the vehicle and trailer from swaying.
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The Electronic Brake Force Distribution (EBD) is active due to early onset of brake related wheel slip(s) at one or more wheels.
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The EBD is active.
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No expected impact on vehicle functionality. The vehicle should be driven with caution due to the road conditions.
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The Tesla Vehicle Dynamics Controller (TVDC) is active due to lateral stability related wheel slip(s) at one or more wheels.
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The TVDC is active.
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No expected impact on vehicle functionality. The vehicle should be driven with caution due to the road conditions.
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Brake Torque Control (BTC) is active due to traction related wheels slip(s) at one or more wheels.
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BTC is active.
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No expected impact on vehicle functionality. The vehicle should be driven with caution due to the road conditions.
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