[Closed] How to extract transponder code from my Haojin HJ150 3 ECU?

901 views - Last reply: February 15, 2025
This topic is closed for new replies.
Bluescreen
Member since January 2023 • 13 posts

Need my Haojin HJ150 3's key code to program a new transponder key

Posted on February 15, 2025
Adminbot
Staff Member • 1826 posts

Hello! We've developed a VIN-based tool to help you get your key code for the Haojin HJ150 3. Check it out here: VIN Key Code Generator.

Posted on February 16, 2025

Replies (4)

Alphamax
Member • 128 posts

Trying to avoid reprogramming costs for my Haojin HJ150 3. This is a lifesaver.

February 16, 2025 Reply
Happycamper
Member • 56 posts

Saved me from towing my Haojin HJ150 3. Thanks!

February 17, 2025 Reply
Reddwarf
Member • 71 posts

Can’t believe this worked on my Haojin HJ150 3. Huge thanks!

February 18, 2025 Reply
Wildcard
Member • 142 posts

Hoping someone can confirm this works for a newer Haojin HJ150 3.

February 19, 2025 Reply

Check the news !

Annual Muscle Car Meetup
🚗 Local Meetup: Annual Muscle Car Meetup
No trophies, just cool cars and cool people

📍 Where: City Park Pavilion
📅 When: May 24 @ 12AM-8PM

Event features:
Kids Activities | Charity Fundraiser

🔧 Forum Members: Don't forget to tag your photos #OurForumName 👋

🧰 Hands-On Engine Tuning Workshop

👨‍🏫 Instructors:
• Detailer Extraordinaire Lisa Wong
• Race Engineer Emily Torres

🔌 Hands-On Activities:
• Ceramic coating application
• 6-hour intensive training
• Personal coaching

📅 Skills Covered:
Paint decontamination | Polishing | Protective coatings

🚙 May 10, 2026 at 10:00 AM (6-hour)

✨ Limited to 15 participants - reserve your spot now!

Workshop: Hands-On Engine Tuning Workshop
Dyno Tuning Intensive Course

🔋 Dyno Tuning Intensive Course

🧰 Instructor: Drivetrain Engineer Sarah Wong

📱 Workshop Includes:
• Track vs street setup comparisons
• 4-hour intensive hands-on training
• Fuel system upgrades | Injector sizing | Pump flow

📉 Bonus: Access to tuning parameter database

🔌 Next Session: May 13, 2026 at 2:00 PM

Customize Your Tuning Focus:

🚀 Performance Mod Cost Estimator

Insight: Suspension mods should match your intended use (street vs track)

Vehicle Information

Modification Information

Additional Options

🔑 Car Key & Fob FAQ

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

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: Keep spare keys in a faraday bag to prevent signal amplification theft
Key Programming
Some vehicles allow DIY key programming using specific sequences (like turning ignition on/off with original keys). However, most modern cars require specialized equipment only locksmiths or dealers have. Check your owner's manual for your specific model.
Key Fob Issues
Many cars have a resync procedure: 1) Press lock/unlock buttons while near the car 2) Insert key and turn ignition on/off in a specific pattern 3) Use a sequence of button presses. Check your manual for exact steps - procedures vary widely by manufacturer.
Key Tip: Keep spare keys in a faraday bag to prevent signal amplification theft
Cost & Options
Locksmiths are typically 30-50% cheaper than dealerships for key replacement and programming. However, some newer models (especially luxury brands) may require dealer-only programming tools. Always get quotes from both.
Key Tip: Replace key fob batteries every 1-2 years as preventative maintenance
Key Fob Issues
This typically indicates: weak fob battery (replace first), damaged fob antenna, or issues with your car's receiver (often in the door handle or rearview mirror). Environmental interference from other electronics can also reduce range.
Key Tip: Keep spare keys in a faraday bag to prevent signal amplification theft
Key Fact: Key fob batteries typically last 3-4 years with normal use

🔑 KEY SERVICES CLASSIFIEDS

Key Fob Repair & Battery Replacement
$25+
Posted: Apr 22, 2026
Fob not working? We fix broken buttons, replace batteries, and resync to your vehicle. Most repairs done while you wait. Water damage specialists available.
Call: 485-770-1219
Anti-Theft System Repair
$85+
Posted: Apr 28, 2026
Fixing security light issues, PATS systems, and ignition immobilizers. Proper diagnosis before repair. Most vehicles serviced same day. Warranty on all work.
Call: 417-228-2797
Vintage Car Key Restoration
$55+
Posted: Apr 19, 2026
Specializing in classic car keys (pre-1990). Can reproduce hard-to-find keys for antique vehicles. Museum-quality work for collector cars.
Call: 614-966-1236
Key Fob Case Replacement
$35
Posted: Apr 19, 2026
Cracked or damaged fob housing? We transfer your electronics to a new case. Multiple color options available. Most models in stock. 15-minute service.
Call: 334-984-5970
Ads refreshed daily • Licensed professionals • Mobile services available

🔑 Upcoming Key & Immobilizer Services

Seminar
May 22, 2026

Smart Key Programming Class

by Locksmith Pro
Hands-on experience with the newest transponder key cloning and programming equipment
Seminar
May 23, 2026

Transponder Key Tech Day

by Fob Fixers
Become certified in vehicle security systems with our intensive 2-day course
Workshop
May 16, 2026

Mobile Key Programming Clinic

by Auto Key Masters
Live demonstration of the latest anti-theft technologies and bypass prevention methods
Workshop
May 8, 2026

Key Fob Repair Training

by Fob Fixers
Live demonstration of the latest anti-theft technologies and bypass prevention methods

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