[Archived] How do I know if my 2021 BMW M340 i has an immobilizer?

4799 views - Last reply: October 19, 2024
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Where can I get the key code to make a new key for my 2021 BMW M340 i?

Hello! We've developed a VIN-based tool to help you get your key code for the 2021 BMW M340 i. Check it out here: VIN Key Code Generator.

Replies (4)

I’m also looking for how to retrieve the key code on a 2021 BMW M340 i.

Looking for the same thing for my 2021 BMW M340 i, hope someone can help.

My mechanic said this might help with my 2021 BMW M340 i key issue.

Was about to give up on my 2021 BMW M340 i, but this gives me hope.

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Most transponder keys and smart keys can be reprogrammed if they haven't been damaged. Basic mechanical-only keys (no chip) can't be reprogrammed - they must be physically cut to match your locks.
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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.
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1) Contact a locksmith who specializes in automotive keys or your dealership 2) Provide proof of ownership (registration, title, ID) 3) They'll either cut new keys by code or reprogram your car's system 4) This is expensive ($200-$800) as the immobilizer may need resetting.
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.
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