Hyundai Tucson: Brake Pedal

Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual / Brake System / Braking System - operation and description / Brake Pedal


  1. Brake member assembly
  2. Stop lamp switch
  3. Brake pedal arm assembly
  4. Brake pedal pad

Schematic Diagram

System circuit diagram

System circuit diagram

Terminal Function

Terminal Function



  1. Turn ignition switch OFF and disconnect the negative (-) batteiy cable.
  2. Remove the crash pad lower panel.

    (Refer to Body - "Crash Pad Lower Panel")

  3. Confirm the gap between stop lamp switch and bracket.

Stop lamp clearance (A) : 1.0 - 2.0 mm (0.04 - 0.08 in.)

  1. If the gap between stop lamp switch and bracket is not 1.0 - 2.0 mm (0.04 - 0.08 in), check the mounting clip and other part of around stop lamp.
  2. If there is normal, remove the stop lamp switch and then install again.


  1. Fuse inspection

Mount the test fuse to the switch fuse and relay fuse part to confirm a normal joint fit.

  1. Diagnostic tool Data Analysis
  1. Analyze diagnostic tool data and confirm if there is anything wrong with the stop lamp switch.

(1) Connect the diagnostic tool to the self-diagnosis connector.

(2) Turn the spark switch on (3) Step on the brake pedal.

(4) Inspect the "brake switch" categoiy that displays the "sensor data" diagnostic tool.

Normal waveform : The pressure sensor signal value will change according to the brake ON/OFF switch.

  1. Inspection of connector by each part

Check to see whether or not each connector has been damaged, or terminal surge, or incomplete connection has taken place

Engine room junction box

ABS/VDC control module

ABS/VDC control module

  1. Inspect the stop lamp circuit

Connect probe to each terminal wire and confirm oscilloscope waveform.

Stop lamp switch input/output

Oscilloscope waveform screen

Oscilloscope waveform screen

Brake Pedal - Removal


     Brake Pedal - Removal

    Turn ignition switch OFF and disconnect the negative (-) batteiy cable. Remove the crash pad lower panel. (Refer to Body - "Crash Pad Lower Panel") Disconnect the stop lamp switch connector (A). Pull the locking plate (A)

     Parking Brake System

    Components Lever Type Parking brake pedal assembly Equalizer assembly Parking brake cable Pedal Type Parking brake pedal assembly Front parking brake cable Equalizer assembly Rear parking brake cable Removal Disconnec

     Parking Brake Pedal Stroke

    Adjustment WARNING After disassembling/assembling the caliper body or replacing the caliper, parking brake cable or brake disc, re-adjust the parking brake. To fit the cable, follow one of these procedures. Apply a parking brake fully


     Fuel Tank

    Component Location Fuel tank Canister Vapor hose Ventilaton hose Fuel filler hose Fuel tank air filter Leveling hose Fuel Level Sender (FLS) Fuel pump Fuel filter Fuel pressure regulator Fuel Perssure Sensor (FPS) High

     Heating and air conditioning

    Start the engine. Set the mode to the desired position. To improve the effectiveness of heating and cooling, select: Heating:  Cooling:  Set the temperature control to the desired position.  Set the air i