MechanMagic Cadillac 5-Button Proximity Key Fob Replacement (HYQ2AB, 315 MHz, Pre-assembled)

MechanMagic’s 5-button proximity key fob replacement gives push-start Cadillac ATS, XTS and CTS models (2014–2019) a fully functional smart remote at an affordable non-OEM price.

If your Cadillac smart key is lost, damaged, or the buttons no longer respond, this MechanMagic replacement is built to match the factory-style remote’s features—remote start, lock/unlock, panic and trunk release—on vehicles that use the HYQ2AB/FCC ID system. It ships pre-assembled with electronics and a 3V lithium coin cell, operates at 315 MHz, and is compatible with the common part numbers owners encounter when replacing Cadillac proximity fobs. Note: this is a third-party (non-OEM) shell and does not include any Cadillac logo; programming must be completed by a locksmith or dealer and the fob only supports push-start vehicles, not regular keyed ignitions.

How will this fob work with my Cadillac?

The MechanMagic remote is manufactured to the HYQ2AB FCC spec and communicates on 315 MHz, matching many late-model Cadillac smart key systems. It contains the pre-installed circuit board and battery, so once programmed by a qualified technician it behaves like the original proximity remote.

• FCC ID: HYQ2AB and compatible with listed Cadillac part numbers
• Frequency: 315 MHz—matches specified vehicles
• Includes electronics and lithium 3V coin battery already installed
• Requires professional programming (locksmith or dealer)

Which Cadillac years and models are supported?

This replacement targets Cadillac ATS, XTS and CTS models that use push-button start between 2014 and 2019. Confirm your vehicle’s original key part number or consult a fitment tool before purchasing to ensure the correct match.

• Cadillac ATS: 2015, 2016, 2018, 2019
• Cadillac XTS: 2015, 2016, 2018, 2019
• Cadillac CTS: 2014, 2015, 2016, 2018, 2019
• Not compatible with non-push-start (regular key) vehicles

What do I need to know about installation and programming?

The remote arrives pre-tested with battery and electronics installed, but it will not operate with your car until it is programmed to your vehicle’s immobilizer system. Programming cannot be performed by the fob alone; a dealership or certified automotive locksmith must complete the setup to pair the remote to your car.

• Pre-installed electronics and battery—ready for programming
• Self-programming is not supported; professional service required
• Bring proof of ownership and original key information to the programmer
• Compatible part numbers: 13580811, 13594024, 1358539, 13598507, 13510254, 13598530

Does this product match the original fob exactly?

MechanMagic supplies a functionally equivalent replacement housing and electronics, but this item is a non-OEM product and ships without any manufacturer logo. Fit, button layout and functionality are designed to match the factory remote for a seamless driver experience after programming.

• Non-OEM shell—no Cadillac logo included
• 5-button layout for lock, unlock, remote start, trunk and panic
• Delivered pre-tested to ensure buttons and electronics respond correctly

Who is this for: The MechanMagic key fob replacement is ideal for Cadillac owners with push-start ATS, XTS or CTS cars from the 2014–2019 model years who need a cost-effective, ready-to-program smart remote. Choose this if you want a complete electronic fob with battery included and plan to have a locksmith or dealer handle programming. Avoid this product if your vehicle uses a traditional keyed ignition or you require an OEM-branded case.