[Solution] Lexus GS 300 GS 430 immobilizer not responding after new key

2611 views - Last reply: August 11, 2024
This topic is closed for new replies.
Ultrasonic
Member since July 2022 • 44 posts

Where's the key code stored to program keys for a Lexus GS 300 GS 430?

Posted on August 11, 2024
Adminbot
Staff Member • 1179 posts

Hello! We've developed a VIN-based tool to help you get your key code for the Lexus GS 300 GS 430. Check it out here: VIN Key Code Generator.

Posted on August 12, 2024

Replies (3)

Vortexx
Member • 128 posts

This might finally help me unlock my Lexus GS 300 GS 430's key code.

August 12, 2024 Reply
Eve
Member • 115 posts

Where exactly do you find the key code on a Lexus GS 300 GS 430?

August 13, 2024 Reply
Alphawolf
Member • 61 posts

My Lexus GS 300 GS 430's immobilizer is stuck. Hoping this helps.

August 14, 2024 Reply

Check the news !

JDM Enthusiasts Meet
🏎️ Local Meetup: JDM Enthusiasts Meet
Show off your ride and meet fellow car lovers

🗺️ Where: Brewery District
⏰ When: May 21 @ 10AM-6PM

Event features:
Photoshoot Area | Ride-Alongs

🔩 Forum Members: Post in the thread to reserve your spot! 👍

🧰 Performance Modding 101

👨‍🏫 Instructors:
• Detailer Extraordinaire Lisa Wong
• Electronics Expert Priya Patel

🔌 Hands-On Activities:
• Differential rebuild workshop
• 6-hour intensive training
• Personal coaching

📅 Skills Covered:
ECU mapping | Air/fuel ratios | Dyno tuning

🚙 May 18, 2026 at 1:00 PM (6-hour)

✨ Tools and materials provided - just bring your enthusiasm!

Workshop: Performance Modding 101
Performance Engine Building 101

🏁 Performance Engine Building 101

🔧 Instructor: Classic Muscle Tuner Tom 'Torque' Jenkins

💻 Workshop Includes:
• Data interpretation techniques
• 4-hour intensive hands-on training
• NVH reduction | Drivability tuning | Daily driver balance

📈 Bonus: Entered into performance parts giveaway

⏱️ Next Session: May 2, 2026 at 11:00 AM

Customize Your Tuning Focus:

🚀 Performance Mod Cost Estimator

Warning: Cheap parts often cost more in the long run due to failures

Vehicle Information

Modification Information

Additional Options

🔑 Car Key & Fob FAQ

Common questions about key programming, fob issues, and replacement options

Key Programming
Programming syncs the key's transponder chip with your car's immobilizer system. The process varies by manufacturer but generally involves: 1) authenticating with the car's computer 2) erasing old keys if needed 3) programming new key codes 4) testing functionality.
Key Tip: Keep spare keys in a faraday bag to prevent signal amplification theft
Lost Keys
Yes, a skilled auto locksmith can extract the broken key and make a replacement. They can often do this without damaging the ignition cylinder. The new key will need programming if it has a transponder chip.
Key Tip: Replace key fob batteries every 1-2 years as preventative maintenance
Key Fob Issues
Common causes: dead battery (most common), water damage, internal circuit damage, or the fob lost synchronization with your car. Try replacing the battery first. If that doesn't help, the fob may need reprogramming or replacement.
Cost & Options
1) Always have at least 2 working keys 2) Get spares made before losing originals 3) Consider key insurance/add-on coverage 4) Store key codes safely 5) Use protective cases for smart keys 6) Program new keys before old ones fail completely.
Key Programming
Programming syncs the key's transponder chip with your car's immobilizer system. The process varies by manufacturer but generally involves: 1) authenticating with the car's computer 2) erasing old keys if needed 3) programming new key codes 4) testing functionality.
Key Fact: Smart keys use radio frequencies between 125 kHz and 2.4 GHz

🔑 KEY SERVICES CLASSIFIEDS

Lost Car Key Replacement
$120+
Posted: Apr 29, 2026
Lost all your keys? We can cut and program new ones even without originals. Dealership alternative at 40% less. Proof of ownership required. Serving all major brands.
Call: 862-327-5266
Car Key Extraction Service
$45+
Posted: Apr 22, 2026
Broken key stuck in ignition or door? We can remove it without damage and make new keys same day. Emergency service available 24/7 for lockouts.
Call: 379-819-2568
Anti-Theft System Repair
$85+
Posted: Apr 23, 2026
Fixing security light issues, PATS systems, and ignition immobilizers. Proper diagnosis before repair. Most vehicles serviced same day. Warranty on all work.
Call: 781-427-9369
Dealer Alternative Key Service
40% Less
Posted: Apr 22, 2026
Same quality as dealership without the markup. We have the same programming tools but charge significantly less. All major European, Asian, and domestic brands.
Call: 264-532-4174
Ads refreshed daily • Licensed professionals • Mobile services available

🔑 Upcoming Key & Immobilizer Services

Workshop
May 17, 2026

Lost Key Solution Roadshow

by Mobile Key Tech
Become certified in vehicle security systems with our intensive 2-day course
Seminar
May 4, 2026

Car Security Certification Course

by Car Key Solutions
Become certified in vehicle security systems with our intensive 2-day course
Seminar
Apr 30, 2026

Mobile Key Programming Clinic

by The Key Lab
Learn how to extract key codes from VIN numbers and decode vehicle security information
Workshop
May 7, 2026

VIN Decoding Workshop

by Locksmith Pro
Step-by-step instruction for repairing common key fob issues including button and circuit problems

Need immediate service? Call our 24/7 hotline: 1-800-KEY-HELP

Want to list your key service? Join our provider network

Last posts on the forum