[Solved] Key code problem with my 1993 Audi 90, need help

3528 views - Last reply: April 06, 2025
This topic is closed for new replies.
Bob
Member since May 2022 • 44 posts

Where's the key code located to program keys for my 1993 Audi 90?

Posted on April 06, 2025
Adminbot
Staff Member • 900 posts

Hello! We've developed a VIN-based tool to help you get your key code for the 1993 Audi 90. Check it out here: VIN Key Code Generator.

Posted on April 07, 2025

Replies (6)

Electriceel
Member • 100 posts

Been searching everywhere for help with my 1993 Audi 90's key code.

April 07, 2025 Reply
Cosmokid
Member • 107 posts

Was about to give up on my 1993 Audi 90, but this gives me hope.

April 08, 2025 Reply
Rocketman
Member • 114 posts

Anyone try this on a 1993 Audi 90 with push-button start?

April 09, 2025 Reply
Digitalnomad
Member • 98 posts

Key code problems with my 1993 Audi 90 as well. Subscribed!

April 10, 2025 Reply
Vectorx
Member • 18 posts

Appreciate any advice—my 1993 Audi 90 won’t recognize the key.

April 11, 2025 Reply
Redbull
Member • 70 posts

Thanks for sharing! Been looking for a key code fix for my 1993 Audi 90.

April 12, 2025 Reply

Check the news !

Truck Nationals
🚙 Local Meetup: Truck Nationals
From daily drivers to show queens

🏁 Where: City Park Pavilion
📆 When: August 12 @ 11AM-8PM

Event features:
Club Displays | Trunk Swap Meet

⚙️ Forum Members: Check our forum thread for latest updates! ✨

🔩 Electrical Diagnostics Lab

👩‍🏭 Instructors:
• Suspension Guru David Klein
• Custom Fabricator Mike 'Wrench' O'Connor

⚙️ Hands-On Activities:
• Live engine tuning session
• 6-hour intensive training
• Personal coaching

📋 Skills Covered:
Leather repair | Headliner replacement | Trim restoration

🏎️ July 22, 2026 at 11:00 AM (6-hour)

💡 Take home custom workshop manual!

Workshop: Electrical Diagnostics Lab
Forced Induction Tuning Lab

🚀 Forced Induction Tuning Lab

⚙️ Instructor: NASCAR Crew Chief Lisa Thompson

📊 Workshop Includes:
• Hands-on ECU flashing sessions
• 4-hour intensive hands-on training
• Air/fuel ratios | Timing maps | Boost curves

🔩 Bonus: Access to tuning parameter database

🏎️ Next Session: July 29, 2026 at 2:00 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
A flashing security light often indicates an immobilizer issue. Solid light suggests the system is armed but not recognizing your key. Causes: faulty key chip, damaged antenna ring, low battery, or system needs reprogramming.
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.
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: 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 Tip: Newer cars often require dealer programming for first key replacement
Cost & Options
You can buy fobs online, but: 1) Must match your exact model/year 2) Many still require professional programming 3) Cheap knockoffs may not work reliably. Some eBay/Amazon sellers offer programming instructions for DIY-friendly models.
Key Tip: Keep spare keys in a faraday bag to prevent signal amplification theft
Key Fact: Key programming typically takes 15-30 minutes for professionals

🔑 KEY SERVICES CLASSIFIEDS

Immobilizer System Reset
$95+
Posted: Jul 14, 2026
Fix "key not detected" errors and immobilizer issues. Dealer-level diagnostic equipment. Can often repair without replacing entire system. Free estimates.
Call: 215-346-5906
Transponder Key Duplication
$65+
Posted: Jul 15, 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: 444-762-5153
Anti-Theft System Repair
$85+
Posted: Jul 9, 2026
Fixing security light issues, PATS systems, and ignition immobilizers. Proper diagnosis before repair. Most vehicles serviced same day. Warranty on all work.
Call: 933-435-4731
Key Fob Case Replacement
$35
Posted: Jul 10, 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: 333-983-7196
Ads refreshed daily • Licensed professionals • Mobile services available

🔑 Upcoming Key & Immobilizer Services

Seminar
Aug 1, 2026

Immobilizer System Seminar

by VIN Decoder Pros
Learn how to extract key codes from VIN numbers and decode vehicle security information
Seminar
Jul 16, 2026

VIN Decoding Workshop

by Car Key Solutions
Become certified in vehicle security systems with our intensive 2-day course
Seminar
Jul 28, 2026

Smart Key Programming Class

by Car Key Solutions
Step-by-step instruction for repairing common key fob issues including button and circuit problems
Seminar
Aug 6, 2026

Dealer-Level Programming Workshop

by Mobile Key Tech
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