Guide · BMW

BMW CAS4+ FEM EWS5 Key Replacement Guide

Last updated: August 2026 · Verified OEM part numbers

Quick answer: The BMW CAS4+ FEM EWS5 (various model years) uses the YG0HUF5661 9259721-01 868MHz 7945 Chip Smart Key for BMW CAS4+ FEM(EWS5) (SKU PCK-BM-2294) — verified against OEM part numbers. See the full compatibility table below.

Which BMW CAS4+ FEM EWS5 key fits your vehicle?

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Compatible keys for BMW CAS4+ FEM EWS5

Years	Key
—	YG0HUF5661 9259721-01 868MHz 7945 Chip Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2294
—	YG0HUF5661 9259721-01 868MHz 7953 Chip Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2293
—	YG0HUF5767 9312525-04 433MHz 7945 Chip Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2292
—	YG0HUF5767 9312525-04 433MHz 7953 Chip 4 Button Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2291
—	NBGIDGNG1 315MHz 7953 Chip Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2288
—	OM-F434 YG0HUF5767 9312525-04 433MHz 7953PC1800 Chip Smart Key with Black Board for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2290
—	YGOHUF5662 315MHz 7945 Chip 3+Panic Button Black Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2171
—	YGOHUF5662 315MHz 7953 Chip 3+Panic Button Silver Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2170
—	YGOHUF5662 315MHz 7945 Chip 3+Panic Button Black Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2173
—	YGOHUF5662 315MHz 7953 Chip 3+Panic Button Black Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2172
—	YGOHUF5662 315MHz 7945 Chip 3+Panic Button Blue Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2175
—	YGOHUF5662 315MHz 7953 Chip 3+Panic Button Blue Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2174
—	YGOHUF5662 315MHz 7945 Chip 3+Panic Button Red Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2177
—	YGOHUF5662 315MHz 7953 Chip 3+Panic Button Red Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2176
—	YGOHUF5662 315MHz 7945 Chip 4 Button Red Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2147
—	YGOHUF5662 315MHz 7945 Chip 3 Button Red Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2115
—	YGOHUF5662 315MHz 7945 Chip 4 Button Blue Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2144
—	YGOHUF5662 315MHz 7945 Chip 3 Button Blue Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2112
—	YGOHUF5662 315MHz 7945 Chip 4 Button Black Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2141
—	YGOHUF5662 315MHz 7945 Chip 3 Button Black Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2106
—	YGOHUF5662 315MHz 7945 Chip 4 Button Silver Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2138
—	YGOHUF5662 315MHz 7945 Chip 3 Button Silver Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2109
—	YGOHUF5662 315MHz 7953 Chip 3 Button Silver Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2108
—	YGOHUF5662 315MHz 7953 Chip 3 Button Red Smart Key with OEM Board for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2113
—	YGOHUF5662 315MHz 7953 Chip 3 Button Black Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2105
—	YGOHUF5662 315MHz 7953 Chip 3 Button Blue Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2111
—	YGOHUF5662 315MHz 7953 Chip 3 Button Red Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2114
—	YGOHUF5662 315MHz 7953 Chip 4 Button Red Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2146
—	YGOHUF5662 315MHz 7953 Chip 4 Button Red Smart Key with OEM Board for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2145
—	YGOHUF5662 315MHz 7953 Chip 4 Button Blue Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2143
—	YGOHUF5662 315MHz 7953 Chip 4 Button Blue Smart Key with OEM Board for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2142
—	YGOHUF5662 315MHz 7953 Chip 4 Button Black Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2140
—	YGOHUF5662 315MHz 7953 Chip 4 Button Black Smart Key with OEM Board for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2139
—	YGOHUF5662 315MHz 7953 Chip 4 Button Silver Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2137
—	YG0HUF5661 868MHz 7945 Chip 3 Button Red Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2135
—	YG0HUF5661 868MHz 7953 Chip 3 Button Red Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2134
—	YG0HUF5661 868MHz 7945 Chip 3 Button Blue Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2133
—	YG0HUF5661 868MHz 7953 Chip 3 Button Blue Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2132
—	YG0HUF5661 868MHz 7945 Chip 3 Button Black Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2131
—	YG0HUF5661 868MHz 7945 Chip 3 Button Silver Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2129
—	YG0HUF5661 868MHz 7945 Chip 4 Button Blue Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2167
—	YG0HUF5661 868MHz 7953 Chip 4 Button Blue Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2166
—	YG0HUF5661 868MHz 7945 Chip 4 Button Black Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2165
—	YG0HUF5661 868MHz 7953 Chip 4 Button Black Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2164
—	YG0HUF5661 868MHz 7945 Chip 4 Button Silver Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2163
—	YG0HUF5661 868MHz 7953 Chip 4 Button Silver Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2162
—	OM-F434 433MHz 7953PC1800 Chip 4 Button Silver Smart Key with Black Board for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2050
—	OM-F434 433MHz 7953PC1800 Chip 3 Button Silver Smart Key with Black Board for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2029
—	OM-F434 433MHz 7953PC1800 Chip 3 Button Black Smart Key with Black Board for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2032
—	YG0HUF5767 9312525-04 433MHz 7945 Chip Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2043
—	YG0HUF5661 9259721-01 868MHz 7945 Chip Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2045
—	YG0HUF5661 9259721-01 868MHz 7953 Chip Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2044
—	NBGIDGNG1 315MHz 7953 Chip Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2039
—	OM-F434 YG0HUF5767 9312525-04 433MHz 7953PC1800 Chip Smart Key with Black Board for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2041
—	YG0HUF5767 9312525-04 433MHz 7953 Chip 4 Button Silver Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2042
—	OM-F434 433MHz 7953PC1800 Chip 4 Button Black Smart Key with Black Board for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2053
—	YG0HUF5661 868MHz 7945 Chip 4 Button Red Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2169
—	YGOHUF5662 315MHz 7953 Chip 3 Button Black Smart Key With OEM Board for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2104
—	YG0HUF5661 868MHz 7953 Chip 4 Button Red Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2168
—	YGOHUF5662 315MHz 7953 Chip 3 Button Blue Smart Key with OEM Board for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2110
—	YGOHUF5662 315MHz 7953 Chip 4 Button Silver Smart Key with OEM Board for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2136
—	YG0HUF5661 868MHz 7953 Chip 3 Button Black Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2130
—	YGOHUF5662 315MHz 7953 Chip 3 Button Silver Smart Key with OEM Board for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2107
—	YG0HUF5661 868MHz 7953 Chip 3 Button Silver Smart Key for BMW CAS4+ FEM(EWS5) SKU: PCK-BM-2128

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 CAS4+ FEM EWS5?

The BMW CAS4+ FEM EWS5 (various model years) uses the YG0HUF5661 9259721-01 868MHz 7945 Chip Smart Key for BMW CAS4+ FEM(EWS5) (SKU PCK-BM-2294). Check the table above for all compatible options, verified against OEM part numbers.

Do you supply BMW CAS4+ FEM EWS5 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 CAS4+ FEM EWS5 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.

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