Will an Anti-Theft Light Drain Battery?

      by Phil Borges // in Articles

There are a number of things you should do to protect your vehicle. One of the most important is installing an anti-theft light on your car. This will help deter thieves from stealing it and also make them easier to see in the dark. However, there is one thing that you don't want to do when installing this light: use a battery that has been drained! This article will give you some tips for what kind of battery to install and how long they'll last before needing replacement.

Is the anti-theft light supposed to stay on?

There are a lot of things you need to worry about when it comes to your car. One thing that many people don't think of is the effects of an anti-theft light on your battery. This can be a major issue because if your battery dies while you're out and about, then you'll have a hard time getting back home. 

There are some options to choose from. There is an option for a light that stays on even when the car's engine isn't running, which will drain your battery if not connected properly. Another option is one that blinks with every lock/unlock a cycle of your vehicle and lets you know someone has tried entering it without permission.

Some cars will immediately call for dispatch when anti-theft notification signals are activated with either 3 flashes followed by a pause or with 5 discreet flashes at 2-second intervals, but most cars will go through a series of steps like engine shutdown, disarming keyless entry systems (if equipped), immobilizing the car (most cases), shutting off ignition (start push-button ignition) and immediate transmission shift from P(park) to N(neutral).

The other option is much better. If you're worried about your battery draining, consider a device that emits a beep or chirp when an attempted entry has been made, and the door isn't locked afterward. This will save power in case of false alarm and also give off a noise to catch the attention of people around so they could help out.

Can my security system drain my battery?

The short answer is yes; if you have the lights on your security system turned on all of the time, they can drain your battery.

The longer answer is that as long as you have a good battery, the lights should not drain it. However, if your battery has been sitting around for a while and it's time to replace it either due to age or because of other issues having those anti-theft lights on all the time can take its toll.

In the end, though, it is all about how you use your vehicle. If you tend to leave your car sitting for a while and only drive it once a week or so, then having those lights on can definitely drain that battery if it's been in there too long. However, most people drive their cars often enough that it shouldn't be an issue.

When you turn on your anti-theft light, it may impact battery usage. This is because the system uses a separate power source to provide full illumination of all lights around and inside the car.

What is draining my car battery when it's off?

Many anti-theft features for vehicles require a working electrical system to be running. An example of this is the "security light" that stays on when you start your car and flashes intermittently while it runs; or if your vehicle has an alarm, central locking, or remote control fob, each feature will drain power from the battery as long as the ignition is turned on.

The same goes for any other system in your car that needs power at all times to work, such as an alarm, immobilizer, or engine management computer (which turns off one or more cylinders when you are cruising to improve fuel economy). This can include things like "immobilizer anti-theft systems," "electronic security systems," and other aftermarket alarm modifications.

In addition to those, if your car has a radio or computer that requires power at all times, they will be drawing current from the battery as well. In fact, any device with an electronic circuit board can drain your car's battery even when it is switched off.

These features should be disconnected when the car is not in use to avoid being stranded with a flat battery. In most cases, they can simply be unplugged from their power source as long as you have quick access to them otherwise.

Can a warning light drain car battery?

The short answer is yes. But there are a few caveats to consider when you ask the question.

A warning light draws power from the battery whenever your car is turned on and running, whether it be day or night. The draw of this small amount of energy doesn't typically drain your battery. However, if you leave your car parked for an extended period of time with the warning light on, it will eventually go dead.

Any electrical device in your vehicle can become a drain if it's left on, such as headlights, radios, and even door pins. But a warning light is in a class of its own because it's usually lit when there's the greatest amount of current going to your car.

In conclusion, if you do not know for sure how long it has been since the battery was replaced, then the anti-theft light will drain your car's battery. It is best to be safe and replace it as soon as possible. If your car does die because of this, you can look at getting a new battery or try jumping it off. Just be sure to follow the instructions carefully and double-check that everything is connected properly before starting up the engine again.

About the Author

Hi, I'm Phil Borges.. thanks for reading.. My wife says I can't shut up about batteries so to save my marriage I've started this blog .. where I'd be ranting about batteries! Please leave a comment if you have any questions, I'm happy to help!