VCFRONT family
VCFRONT_a188_sleepFailed
Not Available
What does the VCFRONT_a188_sleepFailed alert mean?
The front vehicle controller was not able to go to sleep.
What you'll see in your Tesla
- Not Available
What triggers it
The front vehicle controller started sleep sequence but was aborted.
When it clears
The front vehicle controller is able to successfully sleep.
Potential impact
Higher SoC loss than expected, higher 12V draw than expected, possible unexpected alerts.
Affected models
Model 3 2017-2023
Model 3 2024+
Model Y
Model Y 2025+
Track your Tesla's alerts automatically
Alerts like this reach MyTeslaMate through your car's Tesla telemetry API. MyTeslaMate logs every alert your Tesla reports and turns it into readable history and real-time notifications — hosted TeslaMate with no server to run.