Panic Function Smart Car Key for Cadillac XT4

Product Overview

This 3+1 Buttons 13522872 HYQ2ES 433MHz Smart Key is a high-quality aftermarket/OEM replacement designed exclusively for the 2020-2021 Cadillac XT4. Engineered to match the original key’s performance and functionality, it integrates advanced 433MHz frequency technology and a 46E chip to ensure seamless keyless entry and vehicle control. Whether you need a spare key or a replacement for a lost or damaged one, this smart key delivers reliable performance that aligns with Cadillac’s premium standards. The key features four practical buttons including Lock, Unlock, Rear Start, and Panic, covering all daily operational needs of your Cadillac XT4. Its durable build and precise design make it a top choice for Cadillac owners seeking a cost-effective yet trustworthy key solution.

Technical Specifications

Key Features & Benefits

Seamless Compatibility

The smart key is tailored for the 2020-2021 Cadillac XT4, ensuring 1:1 matching with the vehicle’s original system. No complicated adjustments are needed, allowing for quick pairing and immediate use.

Multifunctional Button Design

The 3+1 button layout covers all core functions of the Cadillac XT4. The Rear Start function enables convenient remote engine activation, while the Panic button provides an extra layer of security in emergencies.

Reliable Signal Transmission

Adopting 433MHz frequency and 46E chip technology, the key offers stable and strong signal transmission. It effectively avoids signal interference, ensuring responsive operation within a normal working range.

Durable and Long-Lasting

Equipped with a CR2032 battery, the key boasts a long service life. Its sturdy key blade and shell can withstand daily wear and tear, reducing the need for frequent replacements.

Working Principle

This Cadillac XT4 smart key operates based on Amplitude Shift Keying (ASK) modulation technology. The core working logic is that digital data modulates the amplitude of the carrier wave to transmit signals. When sending binary 0, the carrier amplitude is set to 0; when sending binary 1, the carrier amplitude is set to 1. This modulation method is simple to implement and highly compatible with the Cadillac XT4’s signal receiving system. When you press any button on the key, the 46E chip generates a corresponding digital signal, which is then modulated into an ASK signal via the internal circuit and transmitted at 433MHz frequency. The vehicle’s onboard receiver captures the signal, verifies its authenticity, and executes the corresponding command such as locking the doors or starting the engine remotely.

Installation & Usage Tips

Installation Guidance

Before installation, confirm that the key’s FCC ID and P/N match your original Cadillac XT4 key to avoid compatibility issues.

For programming, it is recommended to seek assistance from a professional car locksmith or authorized Cadillac service center to ensure accurate pairing.

Usage Precautions

If the smart key is found damaged upon receiving the package, contact the customer service staff immediately to arrange a return or replacement.

The Open Door Anti-Lockout feature is enabled by default. When the vehicle is off and the driver’s door is open, locking the vehicle will cause all doors to lock first and then the driver’s door to unlock automatically. This feature can be turned on or off according to your needs.

The rear door safety locks can prevent passengers from opening the rear doors from the inside. To activate the lock, move the lever on the inside edge of the rear door down to the lock position and close the door. Repeat the operation for the other rear door.

Avoid exposing the key to strong magnetic fields or high temperatures for a long time, as this may damage the internal chip and affect signal transmission.

FAQ

Can I program this smart key by myself?

While some car owners may attempt self-programming, it is not recommended. Professional programming equipment and technical experience are required to ensure the key is fully synchronized with the Cadillac XT4’s system. It is best to have the programming done by a professional locksmith.

How long does the CR2032 battery last?

Under normal daily use, the CR2032 battery can last for 1-2 years. The battery life may vary depending on the frequency of button usage and storage conditions.

What should I do if the key signal becomes weak?

First, replace the battery with a new CR2032 battery of the same specification. If the problem persists, check if the key is damaged or if there is signal interference from surrounding electronic devices. If necessary, contact customer service for further troubleshooting.

Is this key suitable for other Cadillac models besides the XT4?

No, this smart key is exclusively designed for the 2020-2021 Cadillac XT4. It is not compatible with other Cadillac models such as the XT5, XT6, or CT6.