Car Alarms: Remove Viper 300+ Alarm, valet mode, toyota rav4

Question
My wife's Toyota Rav4 has a viper 300+ alarm system in it.  Yesterday it couldn't start.  All the brake, check engine, battery lights are on. The only thing I can start it is to step on gas and brake at the same time.  I was told it is the problem with alarm system.  So, I put the alarm on Valet mode, but still couldn't start.  

Is it really problem with the alarm system?  If so, how do I remove the whole alarm system?  Thanks a lot!  

Answer
I responded to the first question with the same answer.  I do not think this has anything to do with the alarm at all.  Removing it will probably not solve your problems.  This sounds as if there is a blown fuse or supply to one of the ignition/accessory wires in the vehicle.  Here is a link to the installation manual for that system:

http://www.directeddealers.com/manuals/ig/viper/N432V.pdf

and here is a generic how to on alarm removal:

Typically an alarm system would be installed on the driver's side interior of the vehicle.  This system would have been tapped into the ignition switch wiring running down from the key.  If you remove the dash panel(s) under the steering column you should be able to locate where the harness was added that goes to the alarm.  Disconnect each wire that was tapped in and insulate the factory wiring.  You will also see that at least one of the wires was cut, this is the vehicle starter wire that runs from the key to the starter.  This wire needs to be restored, I always recommend soldering all connections but crimp connectors should also work.  Make sure that you remove all connections to the alarm and that any wires that may be exposed are insulated and mounted in a way that they will not interfere with any moving parts and do not run the risk of shorting out.  Remember to take your time and follow each connection running from the brain of the system, leaving one wire connected that you are unsure of the function could cause problems in the future so be sure to remove every wire.

I would strongly recommend taking the car to a good mechanic before removing the alarm however as I can not see any way the alarm would be causing this issue.  If the alarm was to go bad the worse that should happen is the starter would not turn over.