433MHz Intelligent Remote Key for Subaru Legacy

Product Overview

The 3Buttons 88835-AL012 Intelligent Remote Key is a premium aftermarket smart key fob designed for Subaru vehicle enthusiasts. Featuring a 433MHz operating frequency and a 4D CHIP encryption module, it provides a reliable and secure access solution for your Subaru. This key fob is equipped with three practical buttons: Lock, Unlock, and Trunk, which can meet the basic access needs and the demand for quick trunk opening. What sets it apart is its intelligent induction function—when the key is within the effective detection range, you can easily lock or unlock the vehicle via the door handle sensor, without pressing any buttons. It is compatible with a wide range of Subaru models, including the 2016–2020 Subaru Legacy, 2017–2020 Subaru XV Crosstrek, 2016–2020 Subaru Impreza, 2014–2020 Subaru BRZ, and 2014–2020 Subaru Forester. As a high-quality replacement for the original Subaru key fob, it combines intelligence, convenience, and security, making it an ideal choice for Subaru owners.

Technical Specifications

Key Features & Benefits

4D CHIP Encryption & 433MHz Stable Signal

The integrated 4D CHIP uses dynamic encryption technology, which changes the signal code every time it is used, effectively preventing code copying and vehicle theft. The 433MHz frequency is the standard frequency for Subaru’s smart key system, with strong anti-interference ability and a longer effective transmission distance, ensuring stable communication between the key and the vehicle.

Three-Button Design with Independent Trunk Control

The three clearly marked buttons (Lock, Unlock, Trunk) meet the diversified needs of users. The independent Trunk button allows you to open the trunk with one click without unlocking the whole vehicle, which is very convenient when you need to pick up items quickly. The button layout is ergonomic, and the touch feedback is clear, avoiding accidental touches.

Intelligent Induction Function for Hands-Free Operation

As a Subaru intelligent remote key, its biggest advantage is the hands-free induction function. When the key is within the effective detection range of the front door, you can unlock the vehicle by pulling the door handle, and lock it by touching the door lock sensor—no need to take the key out of your pocket or bag, greatly improving the convenience of use.

Broad Compatibility & Easy Battery Replacement

This key fob is compatible with five mainstream Subaru models from 2014 to 2020, with strong versatility. It uses a universal CR2032 battery, which is easy to buy in auto parts stores or supermarkets. The battery replacement process is simple and does not require professional tools.

Working Principle

The 3Buttons 88835-AL012 Intelligent Remote Key integrates two working modes: intelligent induction and button signal transmission. In the induction mode, the key will send a low-frequency induction signal to the vehicle’s door handle sensor in real time. When the key is within the effective range (usually 0.5–1 meter from the door handle), the sensor will trigger the vehicle’s verification system. The 4D CHIP will complete the identity verification with the vehicle’s ECU. After the verification is passed, the door will be unlocked automatically. When you press any button, the key will switch to the 433MHz radio frequency transmission mode, send the encrypted command signal to the vehicle, and the central control system will execute the corresponding Lock, Unlock, or Trunk opening command. The built-in LED indicator will flash to remind you that the signal has been sent successfully.

Installation & Usage Tips

Installation Steps (Chip Programming)

Contact a professional Subaru key matching service provider. Use dedicated diagnostic equipment to connect to the vehicle’s OBD interface and read the vehicle’s smart key data.

Program the 4D CHIP of this key fob into the vehicle’s ECU system to complete the identity binding.

Test the intelligent induction function and button functions separately to ensure that all functions work normally.

Usage & Maintenance Tips

Induction range notes: The intelligent induction function only works when the key is within the effective range of the front door. If the key is too close to the vehicle body or the ground, the induction function may fail. Move the key to a suitable position and try again.

LED indicator meaning: When the key is within the induction range, the LED indicator will flash automatically. If the smart function is disabled, the indicator will only flash when the button is pressed.

Battery replacement tips: Use a plastic pry bar to open the key case (to avoid scratching the shell with a metal tool). Replace the old CR2032 battery with a new one, with the positive side facing up. Reassemble the case and test the key functions.

Daily protection: Avoid soaking the key in water or placing it in a high-temperature environment, which may damage the internal circuit and chip.

FAQ

Can this key be used for my 2018 Subaru Forester?

Yes, this 88835-AL012 intelligent key is fully compatible with 2014–2020 Subaru Forester models. After completing professional programming, it can be used normally.

Why does the intelligent induction function sometimes fail?

The failure may be caused by the key being too close to the vehicle body or the ground, or the battery power being low. Check the key position first, and replace the CR2032 battery if necessary.

Do I need to disable the original key when using this new key?

No, you can bind multiple smart keys to the same vehicle. This new key can be used as a spare key without affecting the use of the original key.

Is the trunk button function available for all compatible models?

Yes, all listed compatible Subaru models support the one-click trunk opening function, which is a standard feature of the vehicle’s central control system.