[Archived] How do I get the key code to program a new key for my 2005 Mercury Mariner?

3022 views - Last reply: November 25, 2024
This topic is closed for new replies.
Jazzhands
Member since November 2021 • 77 posts

Trying to program a new key for my 2005 Mercury Mariner - where's the key code?

Posted on November 25, 2024
Adminbot
Staff Member • 861 posts

Hello! We've developed a VIN-based tool to help you get your key code for the 2005 Mercury Mariner. Check it out here: VIN Key Code Generator.

Posted on November 26, 2024

Replies (4)

Digitaldude
Member • 67 posts

Following along—same issue with my 2005 Mercury Mariner.

November 26, 2024 Reply
Greengiant
Member • 26 posts

I really hope this trick works on my 2005 Mercury Mariner.

November 27, 2024 Reply
Aceventura
Member • 108 posts

I need this so bad for my 2005 Mercury Mariner. Subscribed!

November 28, 2024 Reply
Quicksilver
Member • 60 posts

My 2005 Mercury Mariner might finally get back on the road thanks to this.

November 29, 2024 Reply

Check the news !

Tuner Car Showdown
🚗 Local Meetup: Tuner Car Showdown
The best local cars all in one place

📍 Where: Industrial Park
📅 When: May 7 @ 11AM-4PM

Event features:
Car Audio Competition | Model Car Show

🔧 Forum Members: Forum staff will be there - come say hi! 👋

🧰 Classic Car Restoration Workshop

👨‍🏫 Instructors:
• Custom Fabricator Mike 'Wrench' O'Connor
• Master Technician Carlos Rodriguez (20+ years experience)

🔌 Hands-On Activities:
• Interior restoration techniques
• 6-hour intensive training
• Personal coaching

📅 Skills Covered:
Paint decontamination | Polishing | Protective coatings

🚙 May 18, 2026 at 12:00 PM (6-hour)

✨ Network with fellow gearheads during breaks!

Workshop: Classic Car Restoration Workshop
Suspension Tuning for Speed

🏁 Suspension Tuning for Speed

🔧 Instructor: Engine Builder Mike O'Connor (1000+ HP builds)

💻 Workshop Includes:
• Component selection guides
• 6-hour comprehensive hands-on training
• Exhaust scavenging | Header design | Backpressure

📈 Bonus: Free dyno pull for first 10 signups

⏱️ Next Session: May 13, 2026 at 3:00 PM

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 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.
Security Systems
An anti-theft system that prevents the engine from starting unless it detects the correct transponder chip in the key. The chip sends a unique code to the car's computer when you turn the ignition. No match = no start, even with a physically matching key.
Key Tip: Newer cars often require dealer programming for first key replacement
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: Avoid exposing key fobs to water or extreme temperatures
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.
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 Fact: Modern transponder keys have been required in all new US vehicles since 1998

🔑 KEY SERVICES CLASSIFIEDS

Immobilizer System Reset
$95+
Posted: Apr 29, 2026
Fix "key not detected" errors and immobilizer issues. Dealer-level diagnostic equipment. Can often repair without replacing entire system. Free estimates.
Call: 311-772-8675
Fleet Key Programming
Call
Posted: Apr 23, 2026
Commercial key services for businesses with multiple vehicles. Bulk discounts available. We can handle all your company cars, trucks, and fleet vehicles.
Call: 243-570-3935
Key Fob Case Replacement
$35
Posted: Apr 26, 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: 580-847-9202
Dealer Alternative Key Service
40% Less
Posted: Apr 28, 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: 801-944-2218
Ads refreshed daily • Licensed professionals • Mobile services available

🔑 Upcoming Key & Immobilizer Services

Seminar
May 28, 2026

Car Security Certification Course

by Mobile Key Tech
Solutions for when all keys are lost - from code pulling to immobilizer resets
Seminar
May 3, 2026

Transponder Key Tech Day

by Fob Fixers
Live demonstration of the latest anti-theft technologies and bypass prevention methods
Seminar
May 9, 2026

Mobile Key Programming Clinic

by Immobilizer Experts
Learn how to extract key codes from VIN numbers and decode vehicle security information
Workshop
May 19, 2026

Car Security Certification Course

by Locksmith Pro
Learn how to extract key codes from VIN numbers and decode vehicle security information

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