[Status: Resolved] Got replacement ECU for Rivian R1S Quad Large, now code doesn’t match

4194 views - Last reply: March 11, 2025
This topic is closed for new replies.

How to get my Rivian R1S Quad Large's key code to program replacement keys?

Hello! We've developed a VIN-based tool to help you get your key code for the Rivian R1S Quad Large. Check it out here: VIN Key Code Generator.

Replies (4)

My Rivian R1S Quad Large is basically useless until I get this code. Fingers crossed.

Hope I’m not too late to try this on my Rivian R1S Quad Large.

My Rivian R1S Quad Large's immobilizer is stuck. Hoping this helps.

Would love to see a video version of this for a Rivian R1S Quad Large.

Check the news !

Hot Rod & Custom Car Expo
🚗 Local Meetup: Hot Rod & Custom Car Expo
No trophies, just cool cars and cool people

📍 Where: Fairgrounds Parking Lot
📅 When: May 13 @ 10AM-5PM

Event features:
Show 'n Shine | Dyno Challenge | Parts Swap

🔧 Forum Members: Forum members get preferred parking! 👋

🔩 Suspension Setup Clinic

👩‍🏭 Instructors:
• Electronics Expert Priya Patel
• Detailer Extraordinaire Lisa Wong

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

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

🏎️ May 12, 2026 at 1:00 PM (6-hour)

💡 Network with fellow gearheads during breaks!

Workshop: Suspension Setup Clinic
Dyno Tuning Intensive Course

🚀 Dyno Tuning Intensive Course

⚙️ Instructor: Data Acquisition Expert Priya Patel

📊 Workshop Includes:
• Component selection guides
• 4-hour intensive hands-on training
• Air/fuel ratios | Timing maps | Boost curves

🔩 Bonus: 20% discount on performance parts

🏎️ Next Session: May 13, 2026 at 9:00 AM

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
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: Avoid exposing key fobs to water or extreme temperatures
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: Always have at least two working keys to avoid expensive replacements
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
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 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
Key Fact: Key programming typically takes 15-30 minutes for professionals

🔑 KEY SERVICES CLASSIFIEDS

Mobile Key Programming Service
$75+
Posted: Apr 23, 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: 602-592-3476
Car Key Extraction Service
$45+
Posted: Apr 25, 2026
Broken key stuck in ignition or door? We can remove it without damage and make new keys same day. Emergency service available 24/7 for lockouts.
Call: 376-933-6110
Anti-Theft System Repair
$85+
Posted: Apr 20, 2026
Fixing security light issues, PATS systems, and ignition immobilizers. Proper diagnosis before repair. Most vehicles serviced same day. Warranty on all work.
Call: 835-602-5483
Vintage Car Key Restoration
$55+
Posted: Apr 28, 2026
Specializing in classic car keys (pre-1990). Can reproduce hard-to-find keys for antique vehicles. Museum-quality work for collector cars.
Call: 590-337-4694
Ads refreshed daily • Licensed professionals • Mobile services available

🔑 Upcoming Key & Immobilizer Services

Workshop
May 29, 2026

Transponder Key Tech Day

by Locksmith Pro
Hands-on training for programming transponder keys, smart keys, and fobs using professional tools
Workshop
May 15, 2026

Immobilizer System Seminar

by Immobilizer Experts
Learn how to extract key codes from VIN numbers and decode vehicle security information
Seminar
May 17, 2026

Transponder Key Tech Day

by The Key Lab
Learn how to extract key codes from VIN numbers and decode vehicle security information
Seminar
May 13, 2026

Lost Key Solution Roadshow

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