When immobilizer malfunctions can you just take it out of the car?

NO if the immobilizer is not seen, the car it won't start! the immobilizer is integrated into the security system of the car,if it doesn't past the test it won't stsrt.once in a while it will start,but you should take it to the dealer and get it fixed,make sure that you get any software updates, research it if you can, you have to keep in mind the hierarchy of how the brain boxes works.the engine management system sees that immobilizer failed, it turns off power supply to the starter,fuel pump and ign. system. depending upon what kind of car manufacture you have more things can be turned off