Alerts
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| Signal Name | Description | Condition | Impact |
|---|---|---|---|
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One or more of the messages the vehicle controller receives periodically from the Positive Temperature Coefficient (PTC) heater electronic control unit (ECU) is not received, indicating the PTC heater ECU may be unavailable (MIA).
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One or more of the expected messages from the PTC heater ECU is not received.
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Thermal management system features depending on PTC heater functionality may be limited or unavailable.
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One or more of the messages the vehicle controller receives periodically from the Pedal Monitor (PM) electronic control unit (ECU) is not received, indicating the PM ECU may be unavailable (MIA).
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One or more of the expected messages from the PM ECU is not received.
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Vehicle speed and power may be limited.
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One or more of the messages the vehicle controller receives periodically from the charge port (CP) electronic control unit (ECU) is not received, indicating the CP ECU may be unavailable (MIA).
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The vehicle controller does not receive one or more of the expected messages from the CP ECU within the expected time frame.
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Charging may not start or may be interrupted unexpectedly.
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One or more expected Controller Area Network (CAN) messages from the Park Assist (PARK) electronic control unit (ECU) was not received. Autopark and Summon functions may be unavailable, or their performance may be affected.
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An expected CAN message from the Park Assist (PARK) electronic control unit (ECU) has not been received within the expected timeout, or the message drop rate is too high while the park assist ECU is CAN active. The PARK ECU is considered CAN active when VCFRONT_chGoToSleep is 0 AND VCFRONT_parkLVState is LV_ON.
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Autopark and Summon functions may be unavailable, or their performance may be affected.
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More than half of the ECUs on a either the VEH or PARTY bus are missing more than half their messages while the bus should be active.
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If 50% or more of the ECUs the local ECUs listens to are MIA, and the local ECU receives from more than 3 ECUs on this bus. An ECU is MIA if more than 50% of its messages are MIA and that ECU is considered CAN active (see specific ECU's MIA alert for CAN active conditions).
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Vehicle functionality may be degraded.
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One or more of the messages the vehicle controller receives periodically from the Tesla Air Suspension (TAS) electronic control unit (ECU) is not received, indicating the TAS ECU may be unavailable (MIA).
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One or more of the expected messages from the TAS ECU is not received.
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The air suspension may not function as expected.
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One or more of the messages the vehicle controller receives periodically from the 1st row passenger occupancy classification system (OCS1P) electronic control unit (ECU) is not received, indicating the OCS1P ECU may be unavailable (MIA).
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One or more of the expected messages from the OCS1P ECU is not received.
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Vehicle functions that depend on the OCS1P may be unavailable or may not function as expected.
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One or more of the messages the vehicle controller receives periodically from the onboard charger (CHG) electronic control unit (ECU) is not received, indicating the CHG ECU may be unavailable (MIA).
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The vehicle controller does not receive one or more of the expected messages from the CHG ECU within the expected time frame.
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Charging may not start or may be interrupted unexpectedly.
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One or more of the messages the vehicle controller receives periodically from the rear drive inverter (DIR) electronic control unit (ECU) is not received, indicating the DIR ECU may be unavailable (MIA).
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One or more of the expected messages from the DIR ECU is not received.
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Vehicle speed and power may be limited.
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One or more of the messages the vehicle controller receives periodically from the right Electronic Park Brake (EPBR) electronic control unit (ECU) is not received, indicating the EPBR ECU may be unavailable (MIA).
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The vehicle controller does not receive one or more of the expected messages from the EPBR ECU within the expected time frame.
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The parking brake may be unavailable or may not function as expected.
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One or more of the messages the vehicle controller receives periodically from the Primary Electronic Power-Assisted Steering (EPAS3P) electronic control unit (ECU) is not received, indicating the EPAS3P ECU may be unavailable (MIA).
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One or more of the expected messages from the EPAS3P ECU is not received.
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Vehicle functions that depend on the EPAS3P may be unavailable or may not function as expected.
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One or more of the messages the vehicle controller receives periodically from the power conversion system (PCS) electronic control unit (ECU) is not received, indicating the PCS ECU may be unavailable (MIA).
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One or more of the expected messages from the PCS ECU is not received.
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The vehicle may be unable to charge.
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One or more of the messages the vehicle controller receives periodically from the left Electronic Park Brake (EPBL) electronic control unit (ECU) is not received, indicating the EPBL ECU may be unavailable (MIA).
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The vehicle controller does not receive one or more of the expected messages from the EPBL ECU within the expected time frame.
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The parking brake may be unavailable or may not function as expected.
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One or more of the messages the vehicle controller receives periodically from the rear right drive inverter (DIRER) is not received, indicating the DIRER may be unavailable (MIA).
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One or more of the expected messages from the DIRER is not received.
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Vehicle speed and power may be limited.
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One or more of the messages the vehicle controller receives periodically from the rear left drive inverter (DIREL) is not received, indicating the DIREL may be unavailable (MIA).
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One or more of the expected messages from the DIREL is not received.
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Vehicle speed and power may be limited.
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One or more of the expected CAN messages from iBooster were not received.
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A message the local ECU expects to receive from the iBooster ECU has not been received within the expected timeout or the drop rate is too high while the iBooster is CAN active.
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Brake boost functionality may be missing.
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One or more of the messages the vehicle controller receives periodically from the Center Console Control Module (CCCM) electronic control unit (ECU) is not received, indicating the CCCM ECU may be unavailable (MIA).
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One or more of the expected messages from the CCCM ECU is not received.
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Vehicle functionality depending on the CCCM ECU may be limited or unavailable.
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One or more of the messages the vehicle controller receives periodically from the vehicle battery controller (VCBATT) is not received, indicating the VCBATT may be unavailable (MIA).
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One or more of the expected messages from the VCBATT is not received.
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Vehicle functionality depending on the VCBATT may be limited or unavailable.
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One or more of the messages the vehicle controller receives periodically from the heat pump system compressor (CMPD) electronic control unit (ECU) is not received, indicating the CMPD ECU may be unavailable (MIA).
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One or more of the expected messages from the CMPD ECU is not received.
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The HVAC system may be unavailable or may not function as expected.
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One or more of the messages the vehicle controller receives periodically from the right vehicle controller (VCRIGHT) is not received over the interprocessor controller area network (IPC), indicating the VCRIGHT may be unavailable (MIA).
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One or more of the expected messages from the VCRIGHT is not received over the IPC.
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Vehicle functions that depend on the VCRIGHT may be unavailable or may not function as expected.
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