Hyundai Sonata LF Quiz
Brake System

Stop Lamp Electronic Module Repair Procedures

In this manual: Brake System
General Information — 9Engine Mechanical System — 90Engine Electrical System — 58Emission Control System — 24Engine Control System/Fuel System — 114Drive Shaft and Axle — 15Suspension System — 35Steering — 19Restraints — 50Brake System — 54Body (Interior and Exterior) — 213Body Electrical System — 241Heating, Ventilation, and Air Conditioning — 56DCT (Dual Clutch Transmission) System — 52
6steps
~36min
2/5difficulty
Done 0 of 6

Inspection

1. Check Fuses. Install a test fuse on the switch fuse and relay fuse part to check for normal connection.
2. Inspect Each Connector Check each connector for damage, terminal overvoltage or incomplete connection. [Engine Room Junction Box]
[Stop Lamp Electronic Module]
[ABS/VDC Control Module]
3. Inspect the Stop Lamp Circuit. Connect the probe to each terminal wire and check the oscilloscope waveform. [Stop Lamp Switch Input/Output]
[Brake light electronic module input/output]
[Oscilloscope Waveform Screen]

Removal

  1. Turn the ignition switch OFF and disconnect the negative (-) battery cable.
  2. Remove the AVN unit. (Refer to Body Electrical System - AVN System) (Refer to Body Electrical System - Premium AVN System)
  3. Remove the glove box. (Refer to Body - Glove Box)
  4. Disconnect the stop lamp electronic module connector (A).
  5. Remove the clip (B), then remove the stop lamp electronic module.
  6. Installation is the reverse of removal.

Test yourself

A quick Hyundai Sonata LF quiz: every answer comes with an explanation and a link to the manual page.