LEXUSF

iTrader: (3)

projectdna

iTrader: (56)

while the key fobs are visually different - the ISF key fob has the "F" logo on the back, while the 2is key fob does not, internally both key fobs are the same.

you will either have to reprogram the ISF key fob to your IS350 or pop open both key fobs and swap the internals.

flowrider

iTrader: (9)

^^^^It's more than that. There are different keys for different years. The OP did not mention years for the ISF key or his IS350. If they are the same years, the answer would be yes, if different years, the answer is maybe.

projectdna

iTrader: (56)

i thought the keyfob internals were the same for the 2is and the ISF, regardless of model year?

flowrider

iTrader: (9)

^^^^

https://www.clublexus.com/forums/is-...ogramming.html

Lou

2013FSport

iTrader: (2)

Just read the RF ID on the outside. If they are the same, they should work. They have to match or they won't communicate. If you simply want the F key holder for bling and the RF (Radio Frequency) is different, grab another 350 fob matching your RF ID and put that in F body. Program and your set.