YDTHTLAH Smart Key Fob Replacement for Cadillac XT4 XT5 XT6 (2020–2024) HYQ2ES 433MHz Pre-assembled

If your original Cadillac smart key fob is lost, damaged, or the buttons no longer respond, this YDTHTLAH aftermarket smart proximity remote offers a direct-fit electronic replacement for many XT4, XT5 and XT6 models from 2020 through 2024. The unit is pre-assembled with battery and tested electronics, matching the common FCC ID HYQ2ES and factory frequencies used on these vehicles. Because it's an aftermarket part, it arrives without Cadillac branding and requires professional cutting and programming to pair with your car.

Will this key fob work with my Cadillac model and year?

Check the FCC ID and part numbers on your existing key before buying. This replacement is built to match HYQ2ES and part numbers 13522879 / 13544052, and is intended for XT4, XT5 and XT6 model years 2020–2024.

• Confirm your current key shows FCC ID: HYQ2ES.
• Verify part numbers 13522879 or 13544052 if available.
• Works with vehicles using 433 MHz remote frequency.
• Not a plug-and-play OEM — see programming notes below.

How do I program and activate this replacement fob?

This aftermarket remote requires professional intervention: a locksmith or dealership must cut the metal key blade and program the transponder and proximity functions. Self-programming is not supported and attempting DIY programming may leave the fob unusable.

• Bring the fob and your vehicle to a qualified locksmith or dealer.
• They will cut the metal key to match your ignition and configure the transponder.
• Professional equipment is needed to pair proximity and remote-start features.
• After programming, test lock/unlock, remote start (if applicable) and passive entry.

What comes in the box and what should I expect on arrival?

The product ships as a fully assembled, brand-new aftermarket key fob with battery and electronics already installed and bench-tested. It does not include Cadillac badges or OEM branding and is intended as a cost-effective replacement rather than a factory-labeled unit.

• One fully assembled YDTHTLAH smart key fob (no logo).
• Pre-installed battery and tested circuitry to ensure functionality out of the box.
• No mechanical cutting or programming performed — professional service required.
• Support available for 3 months for refunds or replacements.

How reliable is this aftermarket option and what warranty support is offered?

This fob is manufactured new and inspected before shipment, but because it’s aftermarket, build styling and externals differ from factory-branded units. YDTHTLAH offers customer support and a 3-month window for refunds or replacements if defects arise.

• 100% new electronics and pre-installed battery tested prior to dispatch.
• After-sales support available within 24 hours via seller messaging.
• Refund or replacement policy valid for three months after purchase.
• Keep proof of purchase and any programming receipts for faster support.

Who is this for: This replacement is best for Cadillac XT4, XT5 and XT6 owners (2020–2024) who need a working proximity key but want a lower-cost aftermarket alternative to dealer-priced OEM remotes. It's suitable for owners who can access a professional locksmith or dealer for blade cutting and electronic programming. If you require factory-branded casing or dealer-origin certification, consider an OEM key; if you want tested electronics and immediate availability with professional programming, this YDTHTLAH fob is a practical choice.