LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Hyundai >> 2018 >> Tucson Value, FWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Cluster Module Diagnosis >> DTC B1040-55: LKAS/LDWS Present Error - Coding Code Error >> DTC Inspection >> Monitoring DTC Status
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Monitoring DTC Status

  1. Connect GDS to "DATA LINK CONNECTOR (DLC)".
  2. IG key "ON", Engine "OFF".
  3. Select "Diagnostic Trouble Codes (DTC)  " with GDS.
  4. Monitor the diagnostic trouble code and present of the trouble code.
  5. Erase the DTC and operate the vehicle within DTC Enable conditions in General information.
    G12611892Courtesy of HYUNDAI MOTOR AMERICA
  6. Is there any DTC output?

    YES 

    NO 

    • Fault is intermittent caused by poor contact in LKAS ("LANE KEEPING ASSIST CONTROL MODULE")'s connector or was repaired and LKAS memory was not cleared.

      → Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.

      → Repair or replace as necessary, go to "VERIFICATION OF VEHICLE REPAIR " procedure.