Keyecu Subaru Keyless Entry Remote Fob CWTB1G077 434MHz H Chip — 2019-2023 Fit, 4-Button Replacement

If your Subaru’s original fob is lost, damaged, or the buttons no longer respond, this Keyecu replacement reproduces the same button layout—Lock, Unlock, Trunk and Panic—and is built to match the vehicle electronics when the FCC board number and frequency align. The unit is an aftermarket part made to be cut and professionally programmed, giving you a cost-effective option without altering factory operation.

How do I confirm this fob fits my Subaru?

Before ordering, compare your existing key’s shape, button arrangement and internal board markings. Open your original remote (or have a locksmith check) and verify the board number CWTB1G077 and that the transmitter frequency reads 434MHz.

• Match the FCC ID: CWTB1G077 on your remote board.
• Verify transmitter frequency: 434MHz.
• Confirm button count/placement: Lock, Unlock, Trunk, Panic.
• Compare physical case shape to ensure fit in your vehicle’s key slot.

What steps are needed to make the replacement work with my car?

This Keyecu fob requires a professional locksmith or dealer to cut the metal key and program the remote to your vehicle’s immobilizer and remote system. Programming ensures the car recognizes the H chip and pairs the transmitter code so all remote functions work reliably.

• Have the metal blade cut to match your car’s ignition or emergency key profile.
• Use a professional key programmer for immobilizer and remote sync.
• Test all buttons (lock/unlock/trunk/panic) after programming.
• Retain original key (if available) until the new fob is verified working.

Which Subaru models and years are compatible with this Keyecu fob?

The replacement is designed to fit Subaru Ascent, Crosstrek, Forester, Impreza and XV from model years 2019 through 2023 when the original remote uses the CWTB1G077 board and 434MHz frequency. Compatibility depends on matching the internal board ID rather than only the vehicle model.

• Subaru Ascent: 2019–2023
• Subaru Crosstrek: 2019–2023
• Subaru Forester: 2019–2023
• Subaru Impreza and XV: 2019–2023

How durable and responsive is this aftermarket Keyecu fob?

Keyecu builds this replacement with upgraded materials and a responsive button design aimed at longer life and reliable signal transmission. While the remote comes without original OEM board printing or rear logos, the internal electronics and button feel are optimized for everyday use.

• Premium plastic housing for better wear resistance.
• Sensitive buttons for consistent actuation.
• 434MHz transmitter with H chip compatibility.
• Aftermarket unit—no original logos or board text on the back side.

Who this is for: This Keyecu remote is intended for Subaru owners (Ascent, Crosstrek, Forester, Impreza, XV 2019–2023) who need an affordable replacement fob that matches the CWTB1G077 board and 434MHz frequency. Ideal buyers are those able to have the key blade cut and the electronic portion programmed by a locksmith or dealership, and who want a durable aftermarket option with the same four-button functionality as the factory unit.