[Status: Resolved] Is the key code tied to the ECU or the key on a 1947 Plymouth Special Deluxe?

783 views - Last reply: October 10, 2024
This topic is closed for new replies.

How do I get the key code to program a new key for my 1947 Plymouth Special Deluxe?

Hello! We've developed a VIN-based tool to help you get your key code for the 1947 Plymouth Special Deluxe. Check it out here: VIN Key Code Generator.

Replies (5)

Saved me from towing my 1947 Plymouth Special Deluxe. Thanks!

Really hoping this unlocks my 1947 Plymouth Special Deluxe's mystery code.

Still looking for a reliable way to find the key code on my 1947 Plymouth Special Deluxe.

Has anyone gotten this method to work on a 1947 Plymouth Special Deluxe before?

Following this for my 1947 Plymouth Special Deluxe. Please update if it works!

Check the news !

JDM Enthusiasts Meet
🚙 Local Meetup: JDM Enthusiasts Meet
No trophies, just cool cars and cool people

🏁 Where: Industrial Park
📆 When: June 11 @ 12AM-7PM

Event features:
Judged Show | People's Choice Awards

⚙️ Forum Members: Forum members get preferred parking! ✨

🔩 Brake System Masterclass

👩‍🏭 Instructors:
• Restoration Pro Alex Petrov
• Race Engineer Emily Torres

⚙️ Hands-On Activities:
• Wiring harness fabrication
• 4-hour intensive training
• Personal coaching

📋 Skills Covered:
Alignment angles | Spring rates | Damping adjustment

🏎️ June 4, 2026 at 10:00 AM (4-hour)

💡 Certificate of completion provided!

Workshop: Brake System Masterclass
Street to Strip Tuning Workshop

🔋 Street to Strip Tuning Workshop

🧰 Instructor: Pro Drag Racer Jake 'The Snake' Reynolds

📱 Workshop Includes:
• Boost control mapping exercises
• 6-hour comprehensive hands-on training
• NVH reduction | Drivability tuning | Daily driver balance

📉 Bonus: Entered into performance parts giveaway

🔌 Next Session: June 4, 2026 at 12:00 PM

Customize Your Tuning Focus:

🚀 Performance Mod Cost Estimator

Did you know? Proper tuning can add 20-30% more power from the same hardware

Vehicle Information

Modification Information

Additional Options

🔑 Car Key & Fob FAQ

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

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 Fob Issues
1) Find the seam and pry open the fob (some have tiny screws) 2) Note battery orientation 3) Remove old battery (CR2032 is most common) 4) Insert new battery 5) Reassemble. Test all buttons - if issues remain, the fob may need reprogramming.
Lost Keys
Locksmiths or dealers can: 1) Decode your door or ignition lock to determine key cuts 2) Access your car's key code through manufacturer databases (with proof of ownership) 3) Program new transponder keys using diagnostic equipment.
Key Tip: Consider key insurance for expensive smart keys
Key Programming
Professional key programming requires: diagnostic tools to access the immobilizer system, key code software, transponder programmers, and often proprietary manufacturer equipment. Some locksmiths and all dealers have these tools.
Key Fob Issues
Sometimes. Broken buttons can often be fixed by cleaning or replacing the button pad. Cracked cases can be glued. However, water damage or circuit board issues usually require complete fob replacement. Reprogramming is still needed for replacement fobs.
Key Tip: Newer cars often require dealer programming for first key replacement
Key Fact: Key fob batteries typically last 3-4 years with normal use

🔑 KEY SERVICES CLASSIFIEDS

Mobile Key Programming Service
$75+
Posted: May 20, 2026
Professional car key programming for most makes/models. We come to you! Transponder keys, fobs, and smart keys. Same-day service available. All work guaranteed.
Call: 990-268-3031
Immobilizer System Reset
$95+
Posted: May 20, 2026
Fix "key not detected" errors and immobilizer issues. Dealer-level diagnostic equipment. Can often repair without replacing entire system. Free estimates.
Call: 818-482-0602
Fleet Key Programming
Call
Posted: May 24, 2026
Commercial key services for businesses with multiple vehicles. Bulk discounts available. We can handle all your company cars, trucks, and fleet vehicles.
Call: 714-979-4981
Key Fob Case Replacement
$35
Posted: May 15, 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: 784-419-8992
Ads refreshed daily • Licensed professionals • Mobile services available

🔑 Upcoming Key & Immobilizer Services

Seminar
Jun 22, 2026

Mobile Key Programming Clinic

by Mobile Key Tech
Step-by-step instruction for repairing common key fob issues including button and circuit problems
Seminar
Jun 24, 2026

Anti-Theft System Demonstration

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

Lost Key Solution Roadshow

by Mobile Key Tech
Live demonstration of the latest anti-theft technologies and bypass prevention methods
Workshop
Jun 7, 2026

Immobilizer System Seminar

by Car Key Solutions
Become certified in vehicle security systems with our intensive 2-day course

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