Hyundai Tucson: Introduction of Quick Brake Warning System (ESS)

Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual / Brake System / ESC (Electronic Stability Control) System / Introduction of Quick Brake Warning System (ESS)


In case of quick brake by driver, the brake lamp or turn signal is blinked to warn against the vehicle at rear.

  1. Basic function (Blinking the brake lamp/emergency lamp)
  • Operation condition : In case of quick brake or operation of ABS above in a certain speed
  • Releasing condition : In case of stopping the quick brake or releasing the ABS operation
  1. Additional function (Blinking the turn signal)
  • Operation condition : In case of quick brake in low speed
  • Releasing condition : Releasing at the start of driving

System Configuration

System Configuration

ESS Circuit Diagram

ESS Circuit Diagram

Body (Interior and Exterior)


     Body (Interior and Exterior)

     General Information

    Troubleshooting Specifications Tightening Torque Special Service Tools


    Component Location Fender assembly Replacement WARNING When removing the fender, wrap protective tape around a screwdriver or remover not to damage components Put on gloves to prevent hand injuries Remove the front bumper


     Rear Cross-Traffic Collision-Avoidance Assist (RCCA)

    Rear Cross-Traffic Collision-Avoidance Assist is designed to help detect vehicles approaching from the left and right side while your vehicle is reversing, and warn the driver that a collision is imminent with a warning message and an audible w

     Oil Pump Chain

    Disconnect the battery negative terminal. Remove the timing chain. (Refer to Timing System - "Timing Chain") Remove the oil pump chain tensioner (A). Tightening torque : 9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)