The key fob handle broke off and it got a replacement but the old one has what looks like 4 Allen wrench screws in the back,not a single screw. None of the wrenches fit these things and I can't figure out how to get it off the key. I'm pretty sure it's a replacement fob because it doesn't have the lexus insignia. Any ideas greatly appreciated

 

Those are torx screws. You might be able to get them off with a flat head screw driver but your risking stripping them

 

Go to Home Depot or Lowe’s so you can get the correct size torx screw (Lexo is correct)

 

i just bought this replacement fob from amazon. you can buy it and it comes with he correct wrench to tighten and loosen it up.
question- did your buttons work to open/close the doors? I just replaced my OEM with this key fob like two days ago but its not working when I press the buttons. not sure if it ran out of battery or if the module and the key are not siting close enough inside of the new key fob shell

 

Haven't had a chance to try yet. Nobody local had the right size Torx so Amazon will have it here tomorrow

 

That's a T8 torx screw size in case anyone is wondering.