Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Description and Operation: Function: De-normalization
Under conditions below, ECU turns to denormalized status. After de-normalization, 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 NORMALIZATION )
De-normalization conditions:
- Continuous 15 times reverses
- Power off during motor operation
- 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 | IGN Status | Input Time | IGN Status | Switch Input Status | Switch Input Times | Normalization Status | ||
|---|---|---|---|---|---|---|---|---|
| Re-input time | IGN Status | Switch Input | ||||||
| Driver side door opened, Window glass is bottom with IGN on (Hard stop) | IGN Off | DtTsec BH: 2sec VI: 5sec | IGN On | Δ t ≤ 5sec | IGN On | Press and release Manual down switch | 3 times | De-normalization |
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.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.