[Resolved] 1994 Porsche 928 keyless entry failed - car won’t start

1785 views - Last reply: February 04, 2025
This topic is closed for new replies.

Need the key code to program a replacement key for my 1994 Porsche 928

Hello! We've developed a VIN-based tool to help you get your key code for the 1994 Porsche 928. Check it out here: VIN Key Code Generator.

Replies (6)

I tried this with my 1994 Porsche 928 but still no luck. Any suggestions?

Exactly what I was looking for to fix my 1994 Porsche 928.

My 1994 Porsche 928 has the same problem—any luck getting the key code?

Same issue here with my 1994 Porsche 928, let me know if it works.

My 1994 Porsche 928 won’t start without that code. Following this closely.

Hope this method is better than the last one I tried on my 1994 Porsche 928.

Check the news !

Supercar Sunday Gathering
🚙 Local Meetup: Supercar Sunday Gathering
Where car culture comes alive in your community

🏁 Where: Fairgrounds Parking Lot
📆 When: May 27 @ 10AM-4PM

Event features:
Car Audio Competition | Model Car Show

⚙️ Forum Members: Special section just for forum members! ✨

🔧 Electrical Diagnostics Lab

👨‍🔧 Instructors:
• 4x4 Builder Mark Jensen
• Race Engineer Emily Torres

🛠️ Hands-On Activities:
• Panel beating and dent repair
• 4-hour intensive training
• Personal coaching

📝 Skills Covered:
Metal finishing | Bondo application | Rust treatment

🚗 May 17, 2026 at 11:00 AM (4-hour)

🔥 Early registrants get preferred work bay access!

Workshop: Electrical Diagnostics Lab
Forced Induction Tuning Lab

🏁 Forced Induction Tuning Lab

🔧 Instructor: Factory ECU Engineer Dr. Sophia Chen

💻 Workshop Includes:
• Track vs street setup comparisons
• 4-hour intensive hands-on training
• Traction control tuning | Launch control setup

📈 Bonus: Personalized setup recommendation

⏱️ Next Session: May 13, 2026 at 4:00 PM

Customize Your Tuning Focus:

🚀 Performance Mod Cost Estimator

FYI: Many performance shops offer package deals for common upgrade paths

Vehicle Information

Modification Information

Additional Options

🔑 Car Key & Fob FAQ

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

Security Systems
Some systems reset by: 1) Disconnecting battery for 15+ minutes 2) Using original keys in specific sequences 3) Professional diagnostic reset. Consult your manual - procedures vary. Persistent issues may require dealer-level tools.
Lost Keys
Dealerships can often cut keys using your VIN, but will require proof of ownership. This only works for original factory keys - aftermarket or previously replaced locks won't match. The key will still need programming to start the car if it has a transponder.
Key Tip: Always have at least two working keys to avoid expensive replacements
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: Always have at least two working keys to avoid expensive replacements
Key Programming
Common reasons: wrong key type for your vehicle, anti-theft system needs reset, low car battery voltage during programming, or the key isn't properly synced. Some cars also have programming limits (only 2-4 keys can be registered).
Key Tip: Keep spare keys in a faraday bag to prevent signal amplification theft
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: Some locksmiths offer mobile key programming services
Key Fact: Some luxury car keys can cost $800+ to replace at dealerships

🔑 KEY SERVICES CLASSIFIEDS

Mobile Key Programming Service
$75+
Posted: Apr 27, 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: 640-892-5983
Transponder Key Duplication
$65+
Posted: Apr 20, 2026
Get spare keys made before you lose yours! Cuts and programs most transponder keys on the spot. Cheaper than dealerships. 15+ years experience.
Call: 858-594-1526
Anti-Theft System Repair
$85+
Posted: Apr 21, 2026
Fixing security light issues, PATS systems, and ignition immobilizers. Proper diagnosis before repair. Most vehicles serviced same day. Warranty on all work.
Call: 629-826-2042
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: 715-498-7530
Ads refreshed daily • Licensed professionals • Mobile services available

🔑 Upcoming Key & Immobilizer Services

Seminar
May 1, 2026

Anti-Theft System Demonstration

by Mobile Key Tech
Become certified in vehicle security systems with our intensive 2-day course
Seminar
May 13, 2026

Key Fob Repair Training

by VIN Decoder Pros
Solutions for when all keys are lost - from code pulling to immobilizer resets
Seminar
May 26, 2026

Smart Key Programming Class

by Locksmith Pro
Become certified in vehicle security systems with our intensive 2-day course
Workshop
May 25, 2026

Lost Key Solution Roadshow

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