Same thing Now when i boot, the system shuts off and theres this alarm that goes off. I'm completely lost.

We do not have info on aftermarket systems. Suggest you remove it completely and install a quality system.

lock all doors then use key in front passenger door to unlock. that disables the alarm

I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_a3369546f8067589

mine does the same thing and all you need to do is jump in and start it for it to stop but you go in and staryt meesing with things ist gonna mess up something

The alarm system is integrated into the vehicle electronics, you can't completely bypass it. You don't need a remote to have it work right and not go off, you have a problem with the system like a door sensor.

if its brand new take it back to the dealer and talk to them about it and have them change the alarm settings so it will not do this,its possible that there is a problem with the alarm system itself.

if it is a factory system the following should reset it.

• Turn the ignition switch
  off.
  
  

• Insert the key into the driver's side
  door.
  

• Turn the key clockwise to lock
  it.
  
  

• Turn the key counterclockwise to unlock it.
  The alarm system recognizes an authorized key was used and the system
  resets.

you may have to do this each time you unlock the car.

if it is an aftermarket system you will either have to identify the system and serial number and try to contact the manufacturer for a replacement fob, or have the system removed completely.

there is a module behine the carpet where ya right foot goes. the top plug is the alarm system. just use ya key to lock and unlock the car

If the vehicle has a 'Factory' alarm system, try cycling the jkey in the ignition ON-OFF (not to start), 5 times. This will defeat the factory alarm. This method is used in case the remote trasmitter battery goes dead, or the transmitter is lost.

This only works on Toyota Factory security systems, however.

pull the fuse and there is a sensor adjustment for those but you need to have it checked by a car audio and alarm guy

Okay I have this module so here goes.
Start from your regular timekeeping mode (use lower left buttin to cycle through until you get to the normal time display).
Press 'mode' button (lower left) once. You are now in alarm mode.
Press lower right button to cycle through the alarm modes. The cycle goes: hourly beep on, timed alarm on, both on, neither on. You will see the corresponding icons (a ripple icon for hourly beep and and a bell icon for the alarm) appearing/disappearing in the top left of your display as you cycle through. So if you are in hourly beep mode now you probably need to press that lower right button 3 times to get to 'neither' alarm being on.
Press lower left button to return to normal display.
Hopefully - enjoy the peace!