Car Won’t Start Because Of Alarm System

Car Won’t Start Because Of Alarm System

Undoubtedly, a car alarm is one of the essential parts of your auto that keep it safe from potential thieves. Unfortunately, it can become a pain in the ass if it stifle’s your car’s normal ignition functioning. When a car fails to start, the problem could either be low battery power or the alternator. If the last two parts are functioning optimally, then the alarm could be the problem.

What goes wrong?

Latest cars have their alarm security wired on the ignition system. When the security lights start to blink, the immobilizer is switched on. This is a form of protective mechanism that will bar the car from getting started, no matter how hard you try. In some cars, the honk will go off and remain so until you disable the alarm.

After a repair job, anti-theft systems can realign the cars operational sequence thus sending some systems out of sync with them. The alarm will respond to these changes by turning on the immobilizer because it thinks someone is tampering with the car.

An alarm can also jam an auto’s ignition system if you disconnect the battery to replace it with a new one or if the battery ran out of charge and the car had to be jump started. How does this set off the alarm? Sudden battery changes result in an electrical surge which in turn, triggers the immobilizer system-a security feature that makes sure your car goes nowhere. As annoying as this might be, it’s just a way of the alarm showing you how effective it is.

Besides electrical sparks, some alarm systems are designed to read sensors like vibration, tilting, infrared and microwave. Any of these incidences will result in the alarm impairing the ignition system wires and sending the honk on a blast spree.

To be on the safe side, you have to configure the alarm system to respond to real threats, not just minor vibrations or a mere touch. However, if your car does this most of the time, then you need to learn how to disconnect the alarm and get the car started.

So, I can bypass the alarm system after all?

No, you can’t. Remember an effective alarm system has to be linked to the car’s PCM and BCM, which happen to be the main parts of the ignition system. Unless these parts are functioning normally, the car’s fuel and ignition will remain shut down. Let’s see how you can reset the alarm’s security system.

Generic alarm reset instructions

This is a set of some general rules that apply to most vehicle models.

  • Reset the driver’s door key

Roll up the windows, get out of the car and close all the doors, the trunk, the front hood and the rear hatch too. Lock the car from the driver’s side using the key and move about 10 feet away from the car. Wait for 15 minutes before unlocking the car. This should get the alarm system reset.

  • Key Fob activation

Most cars won’t start once the panic button has been pressed. You’ll need to reset the immobilizer by holding down the panic button for about five seconds. Next, press the “lock” key twice and move 10 feet away from the auto and wait for about 10 minutes. Once 10 minutes are up, hit the unlock button two times. Your car should blink the security lights and honk at the same time as an indication that the alarm system is functioning again.

If a “car locked” light flashes on the control panel while you are trying to start the car, this indicates that the alarm system has not been reset. You’ll need to repeat the process once more.

  • Turn on the ignition

Most immobilizer systems expect to see all the power being used coming from the ignition switch. Power emanating from an unrecognized source like electrical surges will be treated as an attack. To reset the alarm, put the ignition key in its designated port and turn it towards the on position and let it rest there for ten minutes before trying to restart your car.

  • Soft-reboot the immobilizer

Sometimes all it takes to get the car started is removing the alarm fuse from its place and inserting it back. This fuse can be found inside the car’s panel and can only be done well by following the user manual. Remember, the car won’t start until you return the fuse in its rightful position. The process of removing and returning the alarm fuse is called soft immobilizer rebooting.

  • Disconnect the battery

An operational error or power spikes can send any car anti-theft system out of sync with the auto’s parts. Begin by removing the negative terminal of the battery and let it stay that way for about five minutes before clipping it back. This process should hard reset the alarm system and get in back to normal operation. This is called hard rebooting.

From what we have covered so far, it’s now obvious that when your car doesn’t start, it’s basically the immobilizer being shut down. The tips highlighted above should help you fix the problem on your own and save some money in the process. These tips are pretty easy to follow-no special knowledge is needed at all. However, before you blame the alarm system, make sure your battery has adequate power, and there is nothing wrong with the ignition system wiring.

As said before, the tips above are generic and can work on most cars. However, the technology keeps changing, and some auto manufacturers tend to design complex alarm systems in an effort to make car theft virtually impossible. So, you may want to engage google and other search engines on how to address alarm issues with your new automobile.

Don’t get rid of the car’s anti-theft system because it keeps jamming up your ride. Instead, you can visit the best mechanics near you and explain the issue to them. They should be able to fix the problem or replace your alarm with a less problematic one.

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