Alerts
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| Signal Name | Description | Condition | Impact |
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The drive interface (DI) electronic control unit (ECU) detects that the electronic parking brake (EPB) controller area network (CAN) node is missing (MIA).
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The DI ECU is not receiving the expected CAN communication from the EPB, and considers it irrational or MIA.
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The DI ECU is unable to monitor the state of the EPB.
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The Drive Interface (DI) processor has detected an internal exception. This alert does not on its own indicate a symptom or root cause.
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The DI processor detects an exception.
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This alert is primarily informational and is used for logging purposes.
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The Drive Unit is not able to transition to Drive state. There may be a condition preventing the Drive Unit from transitioning states.
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The Drive Unit is not able to transition to Drive state. There may be a condition preventing the Drive Unit from transitioning states.
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The Drive Unit may not function as expected, including a reduction in vehicle power. The vehicle's drive cycle may not function as expected, or at all.
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The Drive Inverter (DIx) has detected an error communicating with the Field Programmable Gate Array (FPGA).
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DIx has detected an error communicating with FPGA. There may be a condition affecting the DIx control board functionality.
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The DIx Gate Drive Unit may not be able to receive data from the Pedal Monitor. The vehicle's drive cycle may not function as expected.
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The Drive Inverter (DIx) has detected a DIx thread executing later than expected. The DIx CPU may be diverting resources towards other tasks.
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The DIx has detected a DIx thread executing later than expected. The DIx CPU may be diverting resources towards other tasks.
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This alert is primarily informational and is used for logging purposes. No expected impact on vehicle functionality.
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The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects an electrically erasable programmable read-only memory (EEPROM) read/write access error. Check for other alerts that may be set as a result.
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There are read/write issues to EEPROM.
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The DI is not able to store any record in EEPROM where the error is located, which impacts functionality on the next boot up.
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The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects an analog-to-digital converter (ADC) channel reference below the lower rational bound.
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Any ADC channel reference is below the minimum rational value.
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The vehicle is blocked from shifting out of Park.
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The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects a memory check error.
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The bootloader cyclic redundancy check (CRC) or application CRC is not expected, or the RAM constants do not match with initialization segment in flash.
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The DI processor may reset, and other functionality may be impacted due to memory corruption.
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The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects that the high voltage (HV) battery management system (BMS) controller area network (CAN) node is missing (MIA).
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The DI ECU is not receiving the expected CAN communication from the BMS, and considers it irrational or MIA.
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The DI ECU is unable to monitor the state of the BMS.
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The drive interface (DI) electronic control unit (ECU) detects that the electronic stability program (ESP, also known as traction control) controller area network (CAN) node is missing (MIA).
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The DI ECU is not receiving the expected CAN communication from the ESP, and considers it irrational or MIA.
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The DI ECU is unable to monitor the state of the ESP.
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The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects that the pedal monitor (PM) controller area network (CAN) node is missing (MIA).
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The DI ECU is not receiving the expected CAN communication from the PM, and considers it irrational or MIA.
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The DI ECU is unable to monitor the state of the PM.
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The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects that the gateway (GTW) controller area network (CAN) node is missing (MIA).
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The DI ECU is not receiving the expected CAN communication from the GTW, and considers it irrational or MIA.
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The DI ECU is unable to monitor the state of the GTW.
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Drive Inverter Warning: Low flow rate of fluid
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Insufficient cooling to the drive inverter is detected
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Drive unit enters unit limp mode (see DI_a126_limpMode)
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Drive Inverter Warning: Active discharge is on but bus voltage remains high
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Bus voltage is high while active discharge is ON
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Potentially exposed high voltage
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Drive Inverter Warning: Phase current imbalance
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Imbalanced phase currents detected. See payload signals for reason of trigger
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Drive unit enters unit limp mode (see DI_a126_limpMode)
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Drive Inverter Warning: Battery sensor bad
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When HV bus is up, DI measured bus voltage very low or disagrees with BMS reported voltage
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Drive unit enters unit limp mode (see DI_a126_limpMode), faults (Model 3 only)
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Drive Inverter Warning: Inverter over temperature
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Drive Inverter temperature (refer payload signals for temperatures) exceeds upper temperature threshold
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No direct impact. Could damage drive inverter if temperature is continuously too high.
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Drive Inverter Warning: Outlet under temperature
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DI coolant outlet temperature (refer to outletTemp) drops below lower temperature threshold
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No direct impact. Could damage drive inverter if temperature is continuously too low.
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Drive Inverter Warning: Outlet over temperature
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DI coolant outlet temperature (refer to outletTemp) exceeds upper temperature threshold
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No direct impact. Could damage drive inverter if temperature is continuously too high.
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Drive Inverter Warning: Battery under voltage
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HV bus voltage (refer to busVoltage) drops below lower voltage threshold (refer to busHighLimit)
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Unable to produce torque/power from drive unit
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