Guide · BMW

BMW 3 Series Key Replacement Guide

Last updated: August 2026 · Verified OEM part numbers

Quick answer: The BMW 3 Series (2012-2018) uses the OEM 434MHz 49 Chip Boutique Smart LCD Key for BMW CAS4 EWS5 FEM (SKU PCK-BM-1059) — verified against OEM part numbers. See the full compatibility table below.

Which BMW 3 Series key fits your vehicle?

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Compatible keys for BMW 3 Series

Years	Key
2012-2018	OEM 434MHz 49 Chip Boutique Smart LCD Key for BMW CAS4 EWS5 FEM SKU: PCK-BM-1059
2012-2018	(Korea Version) OEM 433.92MHz 49 Chip Boutique Smart LCD Key for BMW CAS4 EWS5 FEM SKU: PCK-BM-1058
2012-2018	(BDC Model) 868MHz 7945 Chip Boutique Smart LCD Key for BMW CAS4 EWS5 FEM SKU: PCK-BM-2003
2012-2018	(BDC Model) 315MHz 7945 Chip Boutique Smart LCD Key for BMW CAS4 EWS5 FEM SKU: PCK-BM-2001

Before you order

Match the year range — BMW changed key systems across model years. Check your registration year.
Check your current key — the OEM number printed on your key matches the table above.
Programming — smart keys need a compatible programmer (Xhorse, VVDI, Autel). We can advise which one works for each key.

Frequently asked questions

Which key fits my BMW 3 Series?

The BMW 3 Series (2012-2018) uses the OEM 434MHz 49 Chip Boutique Smart LCD Key for BMW CAS4 EWS5 FEM (SKU PCK-BM-1059). Check the table above for all compatible options, verified against OEM part numbers.

Do you supply BMW 3 Series keys wholesale?

Yes. We supply locksmiths and key distributors at wholesale prices with MOQ from 5 units. Message us on WhatsApp for today's price list.

Can a BMW 3 Series key be programmed without the dealer?

In most cases yes, using tools like Xhorse, VVDI or Autel. We can advise the right programmer for each key SKU.

Ready to order a BMW 3 Series key?