[Working] Keyless entry fails on Chrysler Nassau - immobilizer active?

4826 views - Last reply: January 12, 2025
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How to find the factory key code to program Chrysler Nassau keys?

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

Replies (6)

Can’t believe this worked on my Chrysler Nassau. Huge thanks!

Really hoping this unlocks my Chrysler Nassau's mystery code.

My Chrysler Nassau needs a new key but I need the code first. Help!

Still looking for a reliable way to find the key code on my Chrysler Nassau.

This is exactly what I need for my Chrysler Nassau, thanks for posting!

Still can’t find the code for my Chrysler Nassau. This might do it.

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

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 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: Store your key code separately from your keys
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.
Key Tip: Keep spare keys in a faraday bag to prevent signal amplification theft
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: Replace key fob batteries every 1-2 years as preventative maintenance
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.
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Key Fact: Smart keys use radio frequencies between 125 kHz and 2.4 GHz

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