DI_a123 — Trail Assist Unavailable
Full alert identifier: DI_a123_trailAssistUnavailable
Alert description
The drive interface (DI) electronic control unit (ECU) detects that the Trail Assist feature is unavailable.
Potential impact
The DI may not be able to provide crawl or hill descent torque when Trail Assist is selected on UI.
Set condition
One of Trail Assist's unavailable reasons is active when requesting to activate.
Clear condition
The DI ECU detects that the condition preventing Trail Assist is no longer present.
Signals to check
These diagnostic fields are associated with DI_a123. Check the alert's Alert Log in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
Crawl Unavailable Reason
DI_
|
— |
Hill Descent Unavailable Reason
DI_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of DI_a123.