2011 Hyundai Equus SignatureFACTORY OEM SERVICE PROCEDURE

Description and Operation: Function: Denormalization

Under conditions below, ECU turns to denormalized status. After denormalization, auto up and safety function shall not be operated. In order to make these function active again, ECU should go through the normalization process. Refer to Self DiagnosisΒ  and DOOR AND GLASS STATUSΒ  table.

Denormalization conditions:

  1. Continuous 15 times reverses
  2. Power off during motor operation
  3. Driver side door opened and window glass is at the bottom (hard stop position) with IGN on, IGN Off => within Tsec(BH: 2sec,VI:5sec), IGN On => Manual Down switch signal input 3 times within 5sec => De-normalization (If IGN off) on is not fulfilled within 2sec or manual down switch signal is not inputted within 5sec then repeat again this cycle
DOOR AND GLASS STATUS

Door and Glass
Status		 IGN Status Input Time IGN Status Switch Input Status Switch
Input
Times		 Normalization
on Status
Re-input
time		 IGN Status Switch
Input
Driver side door opened, Window glass is bottom with IGN on (Hard stop) IGN Off Dt Tsec BH: 2secVI: 5sec IGN On Ξ” t ≀ 5sec IGN On Press and release Manual down switch 3times De-normalization
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.