Keyecu Subaru Replacement Key Fob CWTB1G077 434MHz H-Chip for Ascent Crosstrek Forester Impreza XV (2019–2023) — 4-Button Keyless

Keyecu Keyless Entry Remote Key Fob CWTB1G077 is an aftermarket replacement remote for compatible Subaru models (2019–2023) that uses a 434MHz H chip and requires professional cutting and programming.

If you need a like-for-like remote for a Subaru Ascent, Crosstrek, Forester, Impreza or XV from model years 2019–2023, this Keyecu unit is built to match the original button layout and radio frequency. It’s supplied as a replacement aftermarket key shell and circuit board pairing that mirrors the OEM functions: lock, unlock, trunk and panic. Before purchase, confirm the FCC/board reference and frequency on your original remote to ensure a proper fit.

How do I confirm this Keyecu fob will work with my Subaru?

Match the physical key and the circuit board details from your original remote. The replacement is designed for remotes using FCC ID/CWTB1G077 and operating at 434MHz; if those match, the housing and button layout should be compatible.

• Check that your original remote has the same shape and four-button layout.
• Open your original key to verify the remote board number reads CWTB1G077 (or FCC ID match).
• Confirm the original remote frequency is 434MHz and the chip type is H.
• Note: this aftermarket unit arrives without factory text or logo on the backplate.

What installation and programming steps are required?

This Keyecu remote is sold as a replacement that must be cut and programmed by a professional locksmith or dealership. The internal transponder and radio require a qualified key programmer to sync with your vehicle’s immobilizer and remote entry system.

• Have the physical key blade cut to your VIN-specific pattern by a locksmith.
• Bring the remote and vehicle to a professional with key programming equipment.
• Confirm successful pairing of lock/unlock, trunk release and panic functions after programming.
• Retain the original remote until the replacement is fully functional and tested.

What are the build and performance characteristics of this aftermarket remote?

The Keyecu remote uses durable materials intended to withstand everyday use and features responsive buttons designed for reliable operation. It’s an aftermarket replacement manufactured without OEM branding on the backplate but with the same functional layout as the original for seamless user experience.

• Premium housing material for improved durability over time.
• Sensitive button contacts for consistent pressing and response.
• Includes the correct H chip and 434MHz radio frequency for compatible models.
• Aftermarket unit: no printed numbers or logos on the rear of the board.

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

This replacement remote matches a narrow range of Subaru vehicles from recent model years when the original remote uses the listed board and frequency. It’s intended to mirror the four-button functionality (lock, unlock, trunk, panic) on these specific models.

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

Who is this for: The Keyecu CWTB1G077 replacement remote is aimed at Subaru owners whose OEM remote matches FCC ID/CWTB1G077 and 434MHz frequency, and who are comfortable using a locksmith or dealer to cut and program a new key. It’s suitable for drivers seeking an affordable aftermarket substitute that replicates the original button layout and radio chip, provided they verify compatibility before ordering.