BMW CAS4+ EWS5 Key Replacement Guide
Last updated: September 2026 · Verified against OEM part numbers
Quick answer — BMW CAS4+ EWS5
The BMW CAS4+ EWS5 (various model years) uses the HUF5663 smart key — 433 MHz (SKU 原厂板 F卡 433 CAS4) — verified against the original OEM part number. See every compatible option in the table below.
- OEM part number: HUF5663
- Frequency: 433 MHz
- Key type: Smart Key
- Wholesale: MOQ 5 units per SKU, models mixable in one order
Which BMW CAS4+ EWS5 key fits your vehicle?
💬 Ask on WhatsAppCompatible keys for BMW CAS4+ EWS5
| Years | Photo | Key |
|---|---|---|
| — | | OEM Board HUF5663 433MHz 7953PC1800 Chip Smart Key for BMW CAS4+ (EWS5) SKU: 原厂板 F卡 433 CAS4 |
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+ EWS5 key?
The BMW CAS4+ EWS5 key operates on 433 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+ EWS5?
The BMW CAS4+ EWS5 (various model years) uses the OEM Board HUF5663 433MHz 7953PC1800 Chip Smart Key for BMW CAS4+ (EWS5) (SKU 原厂板 F卡 433 CAS4). Check the table above for all compatible options, verified against OEM part numbers.
Do you supply BMW CAS4+ 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+ 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+ EWS5 key?
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More BMW guides: CAS4+ FEM EWS5 · FEM · F Series · X5