Buick Lacrosse Key Replacement Guide
Last updated: September 2026 · Verified against OEM part numbers
Quick answer — Buick Lacrosse
The Buick Lacrosse (2017-2019) uses the HYQ4ES smart key — 433 MHz (SKU PCK-BK-2011) — verified against the original OEM part number. See every compatible option in the table below.
- OEM part number: HYQ4ES
- Frequency: 433 MHz
- Key type: Smart Key
- Years covered: 2017-2019
- Wholesale: MOQ 5 units per SKU, models mixable in one order
Which Buick Lacrosse key fits your vehicle?
💬 Ask on WhatsAppCompatible keys for Buick Lacrosse
| Years | Photo | Key |
|---|---|---|
| 2017-2019 | | HYQ4ES 433MHz 46 Chip 3+1 Button (Trunk) Smart Key for Buick Lacrosse SKU: PCK-BK-2011 |
| 2017-2019 | | HYQ4EA 13508414 433MHz 46 Chip 3+1 Button (Trunk) Smart Key for Buick Lacrosse SKU: PCK-BK-2012 |
| 2017-2019 | | HYQ4EA 13508414 433MHz 46 Chip 4+1 Button (Trunk) Smart Key for Buick Lacrosse SKU: PCK-BK-2018 |
Before you order
- Match the year range — Buick 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 Buick Lacrosse key?
The Buick Lacrosse 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 Buick Lacrosse?
The Buick Lacrosse (2017-2019) uses the HYQ4ES 433MHz 46 Chip 3+1 Button (Trunk) Smart Key for Buick Lacrosse (SKU PCK-BK-2011). Check the table above for all compatible options, verified against OEM part numbers.
Do you supply Buick Lacrosse 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 Buick Lacrosse 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 Buick Lacrosse key?
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