Strattec 4-Button Remote Key Fob (FCC ID GQ43VT20T) – Details & Fitments

By Mohammad H. Abdelhadi, ALOA-Certified Master Locksmith, mobile automotive locksmith. Reviewed by Ray Obar, Master Locksmith. Updated June 1, 2026.

Operating at 315 MHz with a four-button layout, the Strattec 4-Button Remote Key Fob (FCC ID GQ43VT20T) serves as a keyless entry remote for a wide range of Toyota trucks, SUVs, and sedans spanning nearly two decades of production. This unit is identifiable by its four-button face — typically Lock, Unlock, Panic, and a fourth function button — and carries the FCC registration ID GQ43VT20T, confirming compliance with Part 15 radio emission standards. Manufactured by Strattec Security Corporation, a well-established OEM-tier supplier, the device pairs with vehicle receiver modules tuned to 315 MHz. Compatible vehicles share Toyota’s receiver architecture from the mid-2000s through the early 2020s. A correctly programmed Strattec 4-Button Remote Key Fob (FCC ID GQ43VT20T) will lock and unlock doors, activate the panic alarm, and control the fourth assigned function without requiring physical contact with the vehicle.

Vehicle Compatibility for the Strattec 4-Button Remote Key Fob (FCC ID GQ43VT20T)

The following Toyota models have been validated as compatible fitments for this remote:

• Toyota Avalon — model years 2005 through 2012
• Toyota Highlander — model years 2007 through 2013
• Toyota Sequoia — model years 2008 through 2022
• Toyota Sienna — model years 2004 through 2010
• Toyota Solara — model years 2004 through 2008
• Toyota Tacoma — model years 2005 through 2015
• Toyota Tundra — model years 2007 through 2021

The breadth of this fitment list reflects Toyota’s practice of carrying forward a single remote platform across multiple model lines and body styles. The Sequoia and Tundra spans are especially long — the fob remained valid for these platforms across multiple generational refreshes, which speaks to Toyota’s conservative approach to changing keyless entry hardware mid-cycle. For locksmiths, this means a single SKU can service a significant portion of Toyota truck and SUV customers.

315 MHz Frequency and FCC Designation

The GQ43VT20T FCC ID designates a 315 MHz transmitter, which is the dominant keyless entry frequency used by Japanese automakers selling vehicles in the North American market. Each press of a button on this remote sends a rolling-code signal at 315 MHz to the vehicle’s body control module (BCM) or dedicated receiver unit. Rolling-code technology ensures that each transmission is unique, preventing replay attacks where a third party records and retransmits a valid unlock signal.

Locksmiths and technicians should verify the FCC ID printed on the back of the remote housing before ordering a replacement. While multiple Strattec remotes may look physically similar, the FCC ID determines the internal circuit board, frequency, and rolling-code algorithm. Installing a remote with the wrong FCC ID — even one that physically fits the same vehicle — will result in a unit that cannot be programmed to communicate with the receiver.

Programming Considerations

Programming the fob to a compatible Toyota typically requires either an on-board programming (OBP) sequence or diagnostic tool access, depending on the specific vehicle model and year. Some of the older fitments in this list — particularly the 2004–2008 Solara and 2004–2010 Sienna — may support a manual OBP procedure that involves cycling the ignition and pressing the lock/unlock buttons in a specific pattern within a timed window. Later models, including the Sequoia through 2022 and the Tundra through 2021, may require a scan tool capable of accessing Toyota’s remote registration menu.

A critical detail: the remote handles keyless entry functions only. It does not contain an integrated transponder for engine immobilizer communication, nor does it include an emergency blade insert. The device is a standalone four-button transmitter. Owners who need a physical key or transponder ignition key should understand that this remote addresses door lock and panic functions, not starting the engine. A separate mechanical or transponder key is required for ignition on all vehicles in the fitment list.

Physical Construction and Battery

Strattec Security Corporation manufactures this unit to OEM specifications. The housing is a two-piece snap-together plastic shell that can be separated with a thin pry tool for battery replacement. The remote uses a standard coin-cell battery — typically a CR2012 or CR2032, though the exact cell should be confirmed by opening the case or referencing the vehicle owner’s manual. Battery life under normal use generally ranges from two to four years, depending on usage frequency and environmental conditions.

The four buttons are integrated rubber-membrane switches bonded to the circuit board. Over time, the conductive pads on the underside of these membranes can wear through, leading to intermittent or non-responsive buttons. This is a common failure mode on high-mileage remotes and is distinguishable from a dead battery by the fact that some buttons work while others do not. In these cases, the circuit board and membrane must be replaced — cleaning the pads with isopropyl alcohol may temporarily restore function but is not a long-term fix.

OEM vs. Aftermarket Sourcing

The Strattec 4-Button Remote Key Fob (FCC ID GQ43VT20T) is available through automotive locksmith distributors as a replacement unit. When sourcing this remote, locksmiths should verify the FCC ID matches GQ43VT20T and confirm that the button layout — four buttons — matches the original. Aftermarket alternatives from various suppliers may replicate the same frequency and rolling-code protocol at a lower price point, but build quality and membrane durability can vary. OEM-grade Strattec units tend to have tighter tolerances on the button feel and housing fit, which matters to vehicle owners who expect the replacement to match the tactile response of their original remote.

For vehicle owners, the most reliable path to a working replacement is through a professional automotive locksmith who can verify fitment against the VIN, source the correct FCC ID, and program the remote on-site. Attempting to purchase and self-program a remote without verifying the exact FCC designation risks ending up with an incompatible unit that cannot be enrolled in the vehicle’s receiver memory.

Related help: Toyota auto locksmith, car key replacement, car key programming.

Compatible and related keys: Strattec 3-Button Remote Key Fob (FCC ID HYQ12BAN), compatible Strattec 4-Button Smart Key Fob (FCC ID HYQ14FBX), Strattec Smart Key Fob (FCC ID 14FBA), Strattec 4-Button Remote Head Key (FCC ID GQ4-52T), Toyota OEM Remote Key Fob (compatible fob), Strattec Smart Key Fob (FCC ID 14FBB) (compatible fob), Toyota OEM 3-Button Remote Key Fob, Strattec Smart Key Fob (FCC ID 14ADR), related key: Toyota OEM Smart Key Fob (FCC ID 14AAF), related key: Toyota OEM Smart Key Fob.