DAS family
DAS_w230_alcUltrasoundBlocked
Automatic lane change unavailable
What does the DAS_w230_alcUltrasoundBlocked alert mean?
Automatic lane change (ALC) is initiated by the driver but ALC is unavailable due to Autopilot electronic control unit (ECU) detecting blocked ultrasonic sensors.
What you'll see in your Tesla
- Automatic lane change unavailable
- Ultrasonic sensors covered
What triggers it
Autopilot ECU detects one or more ultrasonic sensors as blocked while ALC is initiated.
When it clears
Autopilot ECU no longer detects any ultrasonic sensors as blocked.
Potential impact
Automatic lane change (ALC) feature is unavailable.
Affected models
Cybertruck
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
Model Y 2025+
Semitruck
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