Code
APP_W002
TESLA
Tesla Alert
Ldw Disabled
Views:
UK: 15
EN: 21
RU: 15
AI status
Completed
Completed
100%
Causes
- LDW or Autopilot/Lane Assist feature turned off in vehicle settings
- Forward camera(s) obscured (dirt, ice, snow, stickers) or misaligned
- Camera/module hardware failure or internal fault
- Missing or invalid camera calibration
- Software/firmware bug or incomplete update
- Loss of communications between ADAS camera/module and vehicle network
Symptoms
- LDW/Lane Assist indicator shows disabled or warning message on instrument cluster or touchscreen
- No lane departure chimes, steering/haptic alerts, or visual lane markings shown
- ADAS or camera-related warning in vehicle status screens
- Possible other ADAS features reduced or unavailable (e.g., Autosteer, Traffic Aware Cruise)
- No active fault when conditions (speed, lane markings) are otherwise suitable
What to check
- Verify driver settings: confirm LDW/Lane Assist is enabled in the vehicle menus
- Check instrument cluster/touchscreen for accompanying warning text or instructions
- Inspect forward camera(s) visually for dirt, condensation, ice, cracks, or misalignment
- Use diagnostic tool/OBD access to read ADAS and camera module fault codes and health status
- Check for recent software updates and any post-update messages
- Confirm vehicle speed and driving conditions meet minimum requirements for LDW operation
Signal parameters
- ADAS camera health / status flag
- Lane detection confidence / number of lanes detected
- LDW enabled/disabled configuration flag
- Vehicle speed (LDW minimum speed threshold)
- Steering angle and yaw rate sensor inputs
- CAN bus ADAS module heartbeat and error counters
Diagnostic algorithm
- Confirm the APP_W002 message text and note any additional messages or conditions displayed.
- Ask the driver if LDW was disabled intentionally via settings; verify LDW toggle in vehicle UI.
- Ensure vehicle is in conditions appropriate for LDW (road with visible lane markings, speed above minimum).
- Visually inspect forward camera(s) and clean lens area; remove any obstruction and recheck.
- Reboot vehicle systems / perform a soft power cycle and re-check system status.
- Connect a diagnostic tool and read ADAS/camera module DTCs, event logs and health data.
- Verify camera image feed (if available in service menu) and lane detection confidence values.
- Check CAN communications to/from ADAS module (heartbeat, bus errors, lost messages).
- Verify power and ground at the camera/module connectors and inspect wiring for damage or corrosion.
- If windshield or camera was recently serviced, confirm camera calibration and perform recalibration if required.
- If a software/firmware issue is suspected, check for updates or consult OEM service bulletins before reprogramming.
- If diagnostics indicate hardware failure after the above steps, replace the faulty camera or ADAS module and perform calibration, then clear codes and road-test to confirm restoration.
Likely causes
- Driver manually disabled LDW in the settings or via a recent update
- Contaminated or damaged forward camera lens or housing
- ADAS camera ECU reporting a fault or not responding on CAN
- Calibration data invalid after windshield replacement or camera removal
- Recent software update left LDW feature disabled or in a fallback state
Fault status
Status
Lane Departure Warning system disabled — no lane departure alerts available. Check settings, camera condition, calibration, communications and module health.
Repair difficulty: Medium
Diagnostic time: 0.5-3.0 hours
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