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Product Description
With FCC ID KR5T21, 433.92MHz operating frequency, and 47CHIP integration, it perfectly replicates the core functions of the OEM key, including door lock, door unlock, hatch release, and panic alarm. Whether you need a spare key for daily use or a replacement for a lost or damaged original, this Acura RDX smart remote key is your ideal solution. It is important to note that professional programming by a local car locksmith is mandatory before activation, ensuring seamless compatibility with your vehicle’s electronic system.
Specification | Detailed Information |
FCC ID | KR5T21 |
Part Number (P/N) | 72147-TJB-A01 (Drive1); 72147-TJB-A11 (Drive2) |
Chip Type | 47CHIP |
IC Model | 7812D-T21 |
Frequency | 433.92MHz |
Button Functions | Lock, Unlock, Hatch, Panic |
Battery Type | CR2032 |
Compatibility | 2019-2020 Acura RDX |
Product Category | Aftermarket Smart Key Fob |
This 3+1 button Acura RDX key fob covers all daily operational needs of your vehicle. You can lock or unlock doors with a single click, remotely open the trunk to easily access your luggage, and activate the panic alarm in emergency situations. Additionally, it supports advanced functions like remote window control and cab-only door opening, allowing you to customize access according to different scenarios and enhancing both convenience and safety.
In crowded parking lots or large shopping mall garages, finding your Acura RDX can be time-consuming. The Acura RDX car finder function of this key fob solves this problem effortlessly. Press the panic button, and the vehicle’s horn will sound while the double flashers blink continuously. This audible and visual reminder helps you quickly locate your car, saving you time and hassle.
When the keyless access remote battery runs low and the remote control fails, the built-in emergency key becomes a lifesaver. Simply slide the release knob to pull out the hidden key, which can be used to manually lock or unlock the car doors. Reinstalling it is just as easy—push the key back into the fob until you hear a click. This design ensures you will never be stranded due to a dead battery.
The KR5T21 smart remote key operates on a simple yet stable radio wave transmission principle. When you press a button on the fob, it emits a weak 433.92MHz radio wave signal encoded with unique identification information. The signal is then received by the car’s dedicated antenna, which transmits it to the vehicle’s electronic control unit (ECU). The ECU verifies and recognizes the signal code; once confirmed as valid, it triggers the corresponding actuator, such as a motor or electromagnetic coil, to execute the desired function, whether it is locking the doors or opening the trunk. This process ensures fast response speed and strong anti-interference performance.
This aftermarket Acura RDX key cannot be used directly out of the box. It requires programming by a professional car locksmith to sync with your vehicle’s ECU. Do not attempt to program it yourself, as improper operation may damage the key or the vehicle’s electronic system.
Before placing an order, please carefully check your original key’s FCC ID, part number, and frequency to ensure they match the specifications of this key fob. A mismatch will result in the key being incompatible with your Acura RDX.
The key is powered by a CR2032 battery, which is widely available in local stores or online platforms. When you notice a delayed response or shortened remote control distance, it is time to replace the battery to maintain optimal performance.
No, this smart key is only designed for 2019-2020 Acura RDX models. Please confirm your vehicle’s production year before purchasing.
Under normal daily use, the battery can last 1-2 years. The lifespan may vary depending on the frequency of use.
No, professional programming equipment and technical expertise are required. We recommend contacting a local car locksmith for this service.
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