I hope everyone is having a great week so far.
I've always been intrigued by the Lexus credit card key and the success stories around them with Tacomas, Highlanders, etc. Unfortunately since the smart key was only available with the Limited models until recently, there weren't any good threads with the 4Runner.
This is the only thread I could find, so I figured I would create a new one so my reply with info didn't get buried.
Will A Lexus Smart Key Work?
I'm happy to report that the Lexus credit card worked with my 2020 TRDP. The directions are more or less the same as the Tacoma thread below. The time consuming part was confirming compatibility.
Lexus Credit Card Key Working in Tacoma | Tacoma World
Based off of my research, there is a good chance that it would work with the 2021 as the smart key ECU has the same TMLF12-1 model number. I have not looked into any of the other years where it was only offered on the Limited.
Please do your own research based off of the information above - I am not responsible if it doesn't work for your vehicle.
Parts:
Card key part number: 89904-53512 or 89904-53511 (old part #)
Emergency key part number: 69515-30350
Three options to program and cut the key
1. (Programming only) DIY - Techstream - Buy a Mini VCI J2534 cable and install Techstream on a computer. This is the cheapest option but note the process can be difficult
2. Dealer - Most people on TacomaWorld reported success, but it would probably be worth calling. Some dealers required that the key be purchased at that location and/or refused to try.
3. Locksmith - Call first, some locksmiths cannot program/cut automotive keys.
I dusted off an old laptop to install Techstream and was successful. Emergency key blank is in transit and I've found a local locksmith that can cut the key.
It was a bit pricey but I'm glad that I only have to carry around my wallet now - totally worth it IMO.