VCREAR_a458 — 48 V Heater Fused Rail Or Load Stuck On
Full alert identifier: VCREAR_a458_48VHeaterFusedRailOrLoadStuckOn
Alert description
Fused rail driver or downstream load driver cannot be turned off independently.
Potential impact
Front left seat heater and left frunk strut may be disabled.
Set condition
Stuck-on condition (unexpected load or output) is detected on rail driver or any downstream load.
Clear condition
Stuck-on condition (unexpected load or output) no longer detected on rail driver or any downstream load.
Signals to check
These diagnostic fields are associated with VCREAR_a458. Check the alert's Alert Log in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
Any Downstream Output Test Failed
VCREAR_
|
— |
Downstream Load Stuck On
VCREAR_
|
— |
Left Seat Heat Output High
VCREAR_
|
— |
Left Seat Heat Output Test Failed
VCREAR_
|
— |
Right Seat Heat Output High
VCREAR_
|
— |
Right Seat Heat Output Test Failed
VCREAR_
|
— |
Upstream Current
VCREAR_
|
A |
Upstream Load Test Failed
VCREAR_
|
— |
Show 1 more field
| Signal | Unit |
|---|---|
Upstream Rail Stuck On
VCREAR_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCREAR_a458.