VCLEFT_a586 — Both Headlamps Internal Error
Full alert identifier: VCLEFT_a586_bothHeadlampsInternalError
Alert description
Left and right headlamps report simultaneous matrix manager, LED, High Side Driver (HSD), or Boolean status errors indicating a condition affecting functionality of both headlamps.
Potential impact
Certain light functions or the headlamp fan may be degraded or disabled for both headlamps.
Set condition
For both headlamps, the SSL100 pixel matrix detects non-functional pixels or has communication issues, or the voltage measured across the Lowbeam Prefield, DRL segments, or Turn LEDs (Model S only) is out of range, or the LED drivers in the ECU have reported status flags, or certain values programmed in the SSL100 EEPROM are out of range, or the fan current is out of range.
Clear condition
Left and right headlamps no longer report matrix manager, LED, HSD, or Boolean status errors indicating one or more conditions affecting functionality of both headlamps.
Signals to check
These diagnostic fields are associated with VCLEFT_a586. Check the alert's Alert Log in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
Frunk Open
VCLEFT_
|
— |
In Factory Mode
VCLEFT_
|
— |
In Service Mode
VCLEFT_
|
— |
In Transport Mode
VCLEFT_
|
— |
Left Headlamp Internal Error Mask
VCLEFT_
|
— |
Left Rail Voltage Low
VCLEFT_
|
— |
Right Headlamp Internal Error Mask
VCLEFT_
|
— |
Right Rail Voltage Low
VCLEFT_
|
— |
Show 1 more field
| Signal | Unit |
|---|---|
Ui Mia
VCLEFT_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCLEFT_a586.