BMW CAS4+ FEM EWS5 Key Replacement Guide
Last updated: September 2026 · Verified against OEM part numbers
Quick answer — BMW CAS4+ FEM EWS5
The BMW CAS4+ FEM EWS5 (various model years) uses the YG0HUF5661 smart key — 868 MHz (SKU PCK-BM-2294) — verified against the original OEM part number. See every compatible option in the table below.
- OEM part number: YG0HUF5661
- Frequency: 868 MHz
- Key type: Smart Key
- Wholesale: MOQ 5 units per SKU, models mixable in one order
Which BMW CAS4+ FEM EWS5 key fits your vehicle?
💬 Ask on WhatsAppCompatible keys for BMW CAS4+ FEM EWS5
| Years | Photo | 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
What frequency is the BMW CAS4+ FEM EWS5 key?
The BMW CAS4+ FEM EWS5 key operates on 868 MHz. Frequency is fixed in the key hardware and cannot be reprogrammed — a key bought on the wrong frequency will not lock, unlock or start the car.
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.
Ready to order a BMW CAS4+ FEM EWS5 key?
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