MyTeslaMate App

Signal Name	Description	Condition	Impact
APP_w401_leftPillarCameraHeaterFaulted	The Autopilot electronic control unit (ECU) has detected a hardware condition affecting the left pillar camera heater system.	A hardware condition affecting the functionality of the the left pillar camera heater system is detected.	Autopilot features may not be available, or may not function as expected.
APP_w399_brakeboosterMia	One or more of the messages the Autopilot electronic control unit (ECU) receives periodically from the Brake Booster (BB) is not received on the Party bus, indicating the brake ECU may be unavailable (MIA).	One or more of the expected messages from the Brake Booster (BB) is not received on the Party bus.	Autopilot features such as Traffic-Aware Cruise Control (TACC) may be unavailable, or may not function as expected.
APS_w027_ECU_Reset_Fault	Autopilot Processor Secondary (APS) / Aurix resets unexpectedly.	APS detects that it rebooted unexpectedly.	Autopilot features will be unavailable.
APS_w024_ECU_Watchdog_Reset	Autopilot Processor Secondary (APS) watchdog timer expires.	APS watchdog timer expires.	Causes APS to reboot.
APS_w021_ECU_Temperature_Issue	Autopilot Processor Secondary (APS) detects Electronic Control Unit (ECU) temperature out of nominal range.	APS monitors the temperature sensor then alerts when temperature exceeds nominal range.	System may shut down to prevent part damage. Autopilot features will be unavailable.
APS_w020_ECU_checkstopError	Autopilot Processor Secondary (APS) receives CPU instruction execution error.	APS receives a CPU exception.	Autopilot features will be unavailable.
APS_w019_ECU_Stack_Overflow	Autopilot Processor Secondary (APS) detects software task stack overflow.	APS monitors stack usage and alerts when it exceeds limit.	Some Autopilot features may not work as expected.
APS_w010_radcCalibIssue	Autopilot Processor Secondary (APS) detects forward radar not calibrated.	APS receives an alert from radar that it is not calibrated.	Traffic Aware Cruise Control, Automatic Emergency Braking, Autosteer, etc. will be disabled.
APP_w400_selfieCameraFanFault	The selfie camera fan speed is lower than expected.	There is an issue detected with the selfie camera fan speed updates.	Image quality and Autopilot functionality may be degraded.
APP_w396_severeResidueDetected	There is a severe amount of dirt and debris on the windshield glass surface obstructing the front cameras field of view. Vehicle functions relying on the front cameras will be affected or unavailable.	Camera view is affected due to presence of severe dirt and debris on glass surface.	Autopilot features could be limited or unavailable as front cameras view is degraded.
APP_w397_apFeatDisabledPermanent	User notification that Autopilot features are not available, and will not become available again until the underlying hardware issue is resolved. The payload signal(s) indicate the specific condition(s) affecting Autopilot functionality.	One or more condition(s) affecting Autopilot functionality have been detected. Alert log signal data should provide more information on the specific condition(s) detected.	Autopilot features, including Autosteer, are unavailable, as they may not function as expected.
APP_w391_cabinCameraBlockedonAP	Cabin camera detected as blocked / not having adequate visibility while Autosteer / Full Self-Driving (FSD) is engaged. Driver monitoring features may be limited or unavailable, which may affect whether Autosteer / FSD remains engaged.	The cabin camera is blocked while Autosteer/FSD is engaged.	Driver monitoring features may be limited or unavailable, which could result in Autosteer / FSD becoming unavailable.
APP_w388_windshieldCameraHeaterFaulted	The Autopilot electronic control unit (ECU) has detected a hardware condition affecting the windshield camera heater system.	A hardware condition affecting the functionality of the windshield camera heater system is detected.	Autopilot features may not be available, or may not function as expected.
APP_w303_imuIrational	The Autopilot electronic control unit (ECU) internal inertial measurement unit (IMU) is irrational compared to the IMU from the Electronic Stability Program (ESP) or Restraint Control Module (RCM). This may occur due to an internal condition affecting the Autopilot board or may set temporarily due to aggressive driving (high lateral and longitudinal acceleration).	The Autopilot ECU internal IMU does not match the ESP or RCM IMU.	Autopilot features, including Autosteer, may be unavailable, or may not function as expected.
APP_w356_driverOverriding	The driver overrides the Traffic-Aware Cruise Control (TACC) feature by using the accelerator pedal. This results in Autopilot not applying the brakes, favoring the driver's input instead.	The driver overrides the Traffic-Aware Cruise Control (TACC) feature by applying the accelerator pedal for at least 10 seconds.	The Traffic-Aware Cruise Control (TACC) feature will not apply braking while the override is detected.
APP_w331_fsdDegradedUnavailable	Full Self-Driving (FSD) functionality is limited or unavailable.	Any sensor monitored by the Autopilot electronic control unit (ECU) reports an error.	FSD functionality may be unavailable, or may not function as expected, due to the Autopilot ECU relying on degraded sensor input.
APP_w359_aebDegraded	The Autopilot electronic control unit (ECU) detects that Automatic Emergency Braking (AEB) is unavailable due to a degradation of front camera(s visibility.	The Autopilot ECU detects condition affecting front camera(s) visibility.	Autopilot features may be unavailable, or may not function as expected.
APP_w328_autoparkDegraded	Autopark functionality is limited or unavailable due to a reported error from a sensor or electronic control unit (ECU) monitored by the Autopilot ECU. Autopark may not present parking spots to the driver.	A sensor or ECU monitored by the Autopilot ECU reports an error.	Autopark may not present parking spots to the driver.
APP_w358_isaSystemFault	The Autopilot electronic control unit (ECU) detects a condition affecting functionality of Intelligent Speed Assist(ISA) system(s).	The Autopilot ECU detects Intelligent Speed Assist(ISA) system(s) encountered an invalid condition for enabling ISA.	Autopilot features may be unavailable, or may not function as expected.
APP_w357_ddawSystemFault	The Autopilot electronic control unit (ECU) detects a condition affecting functionality of the driver drowsiness and attention warning (DDAW) system(s).	The Autopilot ECU detects the driver drowsiness and attention warning (DDAW) system(s) encountered an invalid condition for enabling DDAW.	Driver drowsiness and attention warning (DDAW) system(s) may be unavailable, or may not function as expected.

APP_w401_leftPillarCameraHeaterFaulted

The Autopilot electronic control unit (ECU) has detected a hardware condition affecting the left pillar camera heater system.

A hardware condition affecting the functionality of the the left pillar camera heater system is detected.

Autopilot features may not be available, or may not function as expected.

APP_w399_brakeboosterMia

One or more of the messages the Autopilot electronic control unit (ECU) receives periodically from the Brake Booster (BB) is not received on the Party bus, indicating the brake ECU may be unavailable (MIA).

One or more of the expected messages from the Brake Booster (BB) is not received on the Party bus.

Autopilot features such as Traffic-Aware Cruise Control (TACC) may be unavailable, or may not function as expected.

APS_w027_ECU_Reset_Fault

Autopilot Processor Secondary (APS) / Aurix resets unexpectedly.

APS detects that it rebooted unexpectedly.

Autopilot features will be unavailable.

APS_w024_ECU_Watchdog_Reset

Autopilot Processor Secondary (APS) watchdog timer expires.

APS watchdog timer expires.

Causes APS to reboot.

APS_w021_ECU_Temperature_Issue

Autopilot Processor Secondary (APS) detects Electronic Control Unit (ECU) temperature out of nominal range.

APS monitors the temperature sensor then alerts when temperature exceeds nominal range.

System may shut down to prevent part damage. Autopilot features will be unavailable.

APS_w020_ECU_checkstopError

Autopilot Processor Secondary (APS) receives CPU instruction execution error.

APS receives a CPU exception.

Autopilot features will be unavailable.

APS_w019_ECU_Stack_Overflow

Autopilot Processor Secondary (APS) detects software task stack overflow.

APS monitors stack usage and alerts when it exceeds limit.

Some Autopilot features may not work as expected.

APS_w010_radcCalibIssue

Autopilot Processor Secondary (APS) detects forward radar not calibrated.

APS receives an alert from radar that it is not calibrated.

Traffic Aware Cruise Control, Automatic Emergency Braking, Autosteer, etc. will be disabled.

APP_w400_selfieCameraFanFault

The selfie camera fan speed is lower than expected.

There is an issue detected with the selfie camera fan speed updates.

Image quality and Autopilot functionality may be degraded.

APP_w396_severeResidueDetected

There is a severe amount of dirt and debris on the windshield glass surface obstructing the front cameras field of view. Vehicle functions relying on the front cameras will be affected or unavailable.

Camera view is affected due to presence of severe dirt and debris on glass surface.

Autopilot features could be limited or unavailable as front cameras view is degraded.

APP_w397_apFeatDisabledPermanent

User notification that Autopilot features are not available, and will not become available again until the underlying hardware issue is resolved. The payload signal(s) indicate the specific condition(s) affecting Autopilot functionality.

One or more condition(s) affecting Autopilot functionality have been detected. Alert log signal data should provide more information on the specific condition(s) detected.

Autopilot features, including Autosteer, are unavailable, as they may not function as expected.

APP_w391_cabinCameraBlockedonAP

Cabin camera detected as blocked / not having adequate visibility while Autosteer / Full Self-Driving (FSD) is engaged. Driver monitoring features may be limited or unavailable, which may affect whether Autosteer / FSD remains engaged.

The cabin camera is blocked while Autosteer/FSD is engaged.

Driver monitoring features may be limited or unavailable, which could result in Autosteer / FSD becoming unavailable.

APP_w388_windshieldCameraHeaterFaulted

The Autopilot electronic control unit (ECU) has detected a hardware condition affecting the windshield camera heater system.

A hardware condition affecting the functionality of the windshield camera heater system is detected.

Autopilot features may not be available, or may not function as expected.

APP_w303_imuIrational

The Autopilot electronic control unit (ECU) internal inertial measurement unit (IMU) is irrational compared to the IMU from the Electronic Stability Program (ESP) or Restraint Control Module (RCM). This may occur due to an internal condition affecting the Autopilot board or may set temporarily due to aggressive driving (high lateral and longitudinal acceleration).

The Autopilot ECU internal IMU does not match the ESP or RCM IMU.

Autopilot features, including Autosteer, may be unavailable, or may not function as expected.

APP_w356_driverOverriding

The driver overrides the Traffic-Aware Cruise Control (TACC) feature by using the accelerator pedal. This results in Autopilot not applying the brakes, favoring the driver's input instead.

The driver overrides the Traffic-Aware Cruise Control (TACC) feature by applying the accelerator pedal for at least 10 seconds.

The Traffic-Aware Cruise Control (TACC) feature will not apply braking while the override is detected.

APP_w331_fsdDegradedUnavailable

Full Self-Driving (FSD) functionality is limited or unavailable.

Any sensor monitored by the Autopilot electronic control unit (ECU) reports an error.

FSD functionality may be unavailable, or may not function as expected, due to the Autopilot ECU relying on degraded sensor input.

APP_w359_aebDegraded

The Autopilot electronic control unit (ECU) detects that Automatic Emergency Braking (AEB) is unavailable due to a degradation of front camera(s visibility.

The Autopilot ECU detects condition affecting front camera(s) visibility.

Autopilot features may be unavailable, or may not function as expected.

APP_w328_autoparkDegraded

Autopark functionality is limited or unavailable due to a reported error from a sensor or electronic control unit (ECU) monitored by the Autopilot ECU. Autopark may not present parking spots to the driver.

A sensor or ECU monitored by the Autopilot ECU reports an error.

Autopark may not present parking spots to the driver.

APP_w358_isaSystemFault

The Autopilot electronic control unit (ECU) detects a condition affecting functionality of Intelligent Speed Assist(ISA) system(s).

The Autopilot ECU detects Intelligent Speed Assist(ISA) system(s) encountered an invalid condition for enabling ISA.

Autopilot features may be unavailable, or may not function as expected.

APP_w357_ddawSystemFault

The Autopilot electronic control unit (ECU) detects a condition affecting functionality of the driver drowsiness and attention warning (DDAW) system(s).

The Autopilot ECU detects the driver drowsiness and attention warning (DDAW) system(s) encountered an invalid condition for enabling DDAW.

Driver drowsiness and attention warning (DDAW) system(s) may be unavailable, or may not function as expected.

Alerts

Alerts