[Free Solution] Need my Ernst Grube G5's key code to program a replacement key - where to look?

703 views - Last reply: May 09, 2025
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Looking for my Ernst Grube G5's key code to program a new key

Hello! We've developed a VIN-based tool to help you get your key code for the Ernst Grube G5. Check it out here: VIN Key Code Generator.

Replies (6)

I’m stuck in a parking lot with my Ernst Grube G5. Trying this now.

Appreciate any advice—my Ernst Grube G5 won’t recognize the key.

Been here before with my Ernst Grube G5. Let’s see if this one works.

I’ll try this and update how it goes with my Ernst Grube G5.

I really hope this trick works on my Ernst Grube G5.

Just wanted to say this guide helped with my Ernst Grube G5!

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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.
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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.
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