Toyota BZ4X Key Replacement Guide

Last updated: September 2026 · Verified against OEM part numbers

Compatible keys for Toyota BZ4X

Before you order

• Match the year range — Toyota 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 Toyota BZ4X key?

The Toyota BZ4X key operates on 314 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.

What chip does the Toyota BZ4X key use?

The Toyota BZ4X uses a 8A chip. Tell your supplier the chip type when ordering so you receive the correct blank — an ID46 blank will not replace an ID47 or 4D83 key.

Which key fits my Toyota BZ4X?

The Toyota BZ4X (2023-2025) uses the HYQ14FBX 8990H-42510 Board No. 3041 312-314MHz FSK 8A Chip Smart Key for Toyota BZ4X 2023-2025. Check the table above for all compatible options, verified against OEM part numbers.

Do you supply Toyota BZ4X 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.

Related: All Toyota keys · All guides · Key Finder

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