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2024 TESLA MODEL 3
Performance Dual Motor AWD•AWD•AUTOMATIC•ev
4 active safety recalls on this vehicle — view recalls
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Repairs83Labor322Torque3852Fluid5DTC726Battery1Maintenance0Recalls4
C0401moderate severityChassis

ACC Distance Sensor Circuit

on 2024 Tesla Model 3 Performance Dual Motor AWD · AWD

What this code means

General malfunction in the adaptive cruise control distance sensing radar or lidar unit.

Symptoms

  • ACC system disabled
  • Forward collision alert disabled
  • Cruise control limited to non-adaptive mode
  • Warning message on dash

Common causes

  • Radar/lidar unit failure
  • Sensor blocked by dirt or ice
  • Wiring damage to sensor
  • Control module failure

Diagnostic steps

  1. Clean sensor face (radar cover or camera lens)
  2. Check for obstructions in front of sensor
  3. Test sensor power supply
  4. Inspect wiring and connector
  5. Perform sensor self-test with scan tool

Repair notes

Clean sensor area first. Replace radar/lidar unit if internal failure.

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🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Mechanic · 20+ years. Spot an error? Use the Help link above — a human reads every report.
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