I have the same exact problem Onedropz

The only thing I can think of is spending the $700 that the dealer wants towards an alarm with a trunk popper.

Any other suggestions?

 

sewell has a sale on the keys, less than 200 for the master key - try to find someone who ca do a reflash

 

Both you guys need to go to your local lexus dealer and ask about lexus ECM exchange program. Same thing happen to me got my SC400 without a master key. Got a ECM for the cost of a new master key and $145 labor. Hell some dealer will exchange your ECM with the purchace of 2 master keys. Good luck

 

You can get a "machanic key" made. It costed me $60. It unlocks the door, glovebox, and trunk but it doesn't start the car.

 

if i were you i'd go back to the dealer and ask them for a ecu exchange.
because you only have a valet key, you would not be able to program a master key. a new ecu + master keys + labor $1000+ easily. so complain all you can...
goodluck

 

This happened to me as well. I removed my back seats, took out the black piece that blocks you from the trunk, got a long pole, and pull the sucker