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.
2004 Lexus LS 430FACTORY OEM SERVICE PROCEDURE
Theft warning ECU
THEFT WARNING ECU CUSTOMIZE PARAMETERS
| DISPLAY (ITEM) | DEFAULT | CONTENTS | SETTING |
|---|---|---|---|
| SMART IGNITION (Smart ignition) | Fr & Rr | Function to choose available areas for smart key to start engine and cancel steering LOCK. | Front/Fr & Rr |
| TRANSMIT INTVAL (Transmission interval) | 300 ms | Function to set smart key signal interval transmitted from outside of vehicle when vehicle is parked. | 150ms/300ms/450ms/600m s |
| SMART TRUNK (Smart trunk) | ON | Function that opens trunk with smart key. | ON/OFF |
| SMART TRNK-KIN (Smart trunk key inside) | OFF | Function that opens trunk automatically when trunk is closed with smart key left inside. If owner forgets that trunk is opened automatically by this function, it is possible vehicle may be stolen. | ON/OFF |
| DOR OP-CL BUZ (door open-close buzzer) | ON | Function that makes warning available when smart key is taken outside vehicle, any door is opened, shift position is P and ignition switch is pushed, ACC or ON (engine is not running). | ON/OFF |
| HALF LOCK BUZ (Half lock buzzer) | ON | Function that makes warning available for locking doors with smart key when doors are opened. | ON/OFF |
| KEY BATTERY BUZ (Key battery buzzer) | ON | Function that makes warning available when smart key cannot be identified. | ON/OFF |
| KEY NO FIT BUZ (Key no fit buzzer) | OFF | Function that makes warning available when smart key cannot be identified. | ON/OFF |
| SMART BUZ NUM (Smart buzzer number) | 3 TINES | Function that sets number of times wireless buzzer sounds, which warns ignition switch is still on. | 10 TIMES/7 TIMES/5 TIMES /3 TIMES /0 TIME |
| SMART BUZ VOL (Smart buzzer volume) | MAX | Function that sets sound volume of wireless buzzer, which warns ignition switch is still on. | MAX/MID 3/MID 2/MID 1/MIN/OFF |
| BUZZER LENGTH (Buzzer length) | 2s | 2 s/1 s/0 s/OFF | |
| P-OND-CLBUZ (Push-on door-close buzzer) | ON | Function that makes warning available when smart key is taken outside vehicle, driver door is opened and closed, shift position is not P and ignition switch is ACC or ON. | ON/OFF |
| KEY IN LOCK BUZ (Key inside lock buzzer) | 2s | Function that makes warning available when doors are locked with trigger switch with smart key left inside vehicle. | 2 s/1 s/0 S/OFF |
| KEY TAKEOUT BUZ (Key take out buzzer) | OFF | Function that sets interval of searching key inside vehicle and sounds buzzer when key is found inside vehicle. | 300s/60s/30s/10s/ 5 s/3 S/OFF |
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.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.