YDTHTLAH Cadillac XT5 / XT4 Smart Key Fob Replacement HYQ2EB 433MHz — Assembled with Battery

This YDTHTLAH smart key fob is a ready-to-program aftermarket replacement for Cadillac XT5 (2017–2019) and XT4 (2019) vehicles using FCC ID HYQ2EB at 433 MHz.

If your original Cadillac smart key is lost, damaged, or the buttons are worn, this replacement provides the same button layout and radio frequency to restore remote locking, unlocking, and proximity entry. The fob ships fully assembled with battery and electronics installed; it requires professional programming and metal key cutting to work with your vehicle. This listing describes compatibility, installation expectations, and practical details to help you decide if this aftermarket remote meets your needs.

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

Check for matching FCC ID and part numbers on your existing remote before ordering. This replacement matches HYQ2EB and part numbers 13598516 and 13510245 used by Cadillac XT5 (2017–2019) and XT4 (2019). If your current key shows those identifiers, compatibility is likely; otherwise, do not assume it will work.

• Compatible models: Cadillac XT5 (2017, 2018, 2019) and XT4 (2019).
• Radio frequency: 433 MHz—confirm your vehicle uses this frequency.
• Compatible FCC ID: HYQ2EB and part numbers 13598516, 13510245.

How do I get the replacement key programmed and cut?

This is an aftermarket remote that requires a locksmith or dealer to complete programming and key cutting; it cannot be self-programmed by owners. A qualified technician will sync the fob to your vehicle’s immobilizer and cut the metal key blade to match your vehicle’s locks. Expect a short service appointment and a small labor fee from the locksmith or dealership.

• Programming: professional locksmith or dealership required.
• Key blade: must be cut to your vehicle’s VIN-specific pattern.
• Service time: typically under one hour depending on shop availability.

What’s included and how reliable is the hardware?

The fob is sold fully assembled with a fresh battery and the internal electronics pre-installed and tested before shipment. Because this is an aftermarket product, it does not carry OEM branding or logos, but it is manufactured to match the original form and function. The seller tests each unit and offers short-term support in case of defects.

• Included: assembled key fob with battery and electronics installed.
• Condition: 100% new, tested before shipment.
• Warranty/returns: refunds or replacements supported within three months.

Are there differences between this aftermarket key and the factory fob?

Functionally the button layout and radio frequency mirror the factory remote, but this aftermarket version omits OEM logos and manufacturer branding. The internal circuitry is compatible for programming by professionals, but cosmetic details and packaging differ from dealer-supplied keys. If you require embossed logos or original packaging, purchase an OEM fob through a dealership.

• No factory logos or GM branding—aftermarket exterior.
• Same button arrangement and 433 MHz operation for compatible vehicles.
• Requires professional programming like an OEM fob.

Who is this for: drivers of Cadillac XT5 (2017–2019) or XT4 (2019) who need an economical, immediately available replacement remote and are willing to have a locksmith or dealer program and cut the key. Choose this fob if you want a tested aftermarket unit that restores smart proximity and remote functions without OEM branding, and if you can confirm the FCC ID and part numbers match your existing key before purchase.