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Toyota RAV4 Alarm Keeps Going Off/Security Light Blinking

The Toyota RAV4 is one of the most reliable and best-selling small SUVs on the market.

Despite Toyota’s reputation for reliability, older RAV4s do have problems with their alarms.

If a Toyota RAV4 alarm constantly goes off, then it’s most likely caused by a low battery charge. To fix this, charge the battery overnight, and if it fails to hold the charge, replace the battery. If the battery is fine and the alarm continues to go off it is most likely a hood or door switch fault.

The alarm is triggered when it senses a change in the current flowing through the electrical system.

Once the battery is charged, it is also a good idea to check that the battery terminals are securely fastened and that there is no loose wiring that might cause the battery charge to fluctuate.

Close up of car headlight

A drain on the battery due to a component or wire shorting can also cause the alarm to trigger.

The hood and door switches should be cleaned regularly and lubricated so that they move freely. Any twigs, leaves, or other debris should be removed to avoid them interfering with the operation of the switches.

If the doors or hood are not shut properly, that can also cause the alarm to trigger. Make sure that the doors and hood are correctly aligned so that they close properly.

Toyota RAV4 Alarm Keeps Going Off (Causes and Fix)

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While the Toyota RAV4’s alarm is very reliable, there are small things that can cause it to go off even if the car is not being broken into.

A Toyota RAV4 alarm that keeps going off can be triggered by the glass breakage sensor. This sensor is set to detect the vibrations caused by breaking glass, but it can also be triggered by loud music, electrical storms, or high winds. If the sensor is too sensitive, it can trigger the alarm.

If the sensor is too sensitive, you can recalibrate it by resetting the electronic control unit.

The glass breakage sensor ECU is found behind the glovebox. On the ECU is a dial that allows you to set how sensitive the sensor is. You should consult the manual before setting the sensitivity as you may set it too low.

In that case, the alarm will not pick up the sound of breaking glass.

Toyota RAV4 Alarm Not Turning Off (Causes and Fix)

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There’s little that can be as irritating or embarrassing as a car alarm that won’t turn off.

The longer the alarm goes off, the more embarrassing it becomes.

If a Toyota RAV4 alarm is not turning off, it could be a faulty battery, key fob, or a problem with the anti-theft system. Lock and unlock the doors with the key fob. Turn the ignition on for 30 seconds. This should disarm the system. If it does not, lock and then unlock the driver’s door with the key.

With the driver’s door unlocked, get in and switch the ignition on for 30 seconds.

If this also fails to switch the alarm off, it is most likely a fault with the anti-theft system and it will require a scan tool to identify what the problem is.

This article and its contents are owned by Know My Auto and was first published on 06/29/2022

The scan tool will reveal any codes that may show up for the alarm and give the technician a clue as to what the problem is.

The problem could lie with the key, the alarm receiver module, or any one of numerous other input factors that may be causing the alarm to keep sounding.

A loose battery terminal can cause the anti-theft system to lose synchronization. To fix this, lock the car with the key and press the two buttons simultaneously on the key fob. Hold the buttons for about 2 seconds.

Toyota RAV4 Security Light Blinking Car Won’t Start (Causes and Fix)

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When the anti-theft system is triggered, it causes the security light to blink and prevents the engine from starting.

If your Toyota RAV4 security light is blinking and the engine refuses to start, leave the key in the ignition, and turned to the “on” position. Wait for 10 minutes to see if the blinking light stops blinking or comes on without blinking. Turn the ignition off for 20 seconds and then start the engine.

If the engine starts and runs, then you have solved the problem.

However, if the engine starts and dies or refuses to start, you have a long process ahead of you.

You will have to go through a 30-minute session of resetting the anti-theft system. This involves going through the exact same steps mentioned above three times in succession.

After 30 minutes, you should be able to start the car with the security light going out after a few seconds.

If the car still does not start, then your only option is to have the car towed to a dealership where they can check the system thoroughly to identify the one or more components that need replacement.

How to Turn On Toyota RAV4 Alarm

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Activating your car alarm is normally pretty straightforward.

To turn the alarm on in your Toyota RAV4, you can either lock the car with the remote key fob button or you can lock the door with your physical key. On locking the doors, the alarm is activated and will sound should the door be forced open or a window broken.

Once the alarm is activated, an LED will flash slowly showing that the system is on.

If the LED does not flash, you can check to see if the alarm is working by using your key to open the car door. The alarm will go off if it is armed.

In this case, the LED may be faulty and require replacement.

Copyright protected article by Know My Auto and was first published on Jun 29, 2022. .

How to Disable Toyota RAV4 Alarm

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Switching the alarm off in your Toyota RAV is accomplished using the key fob.

To disable your Toyota RAV4 alarm, press the unlock button on the key fob. If the alarm is sounding, then you can hit the red alarm button or the unlock button, both of which will switch the alarm off.

Some RAV4 models have an override switch on the alarm system ECU. To disable the alarm, you need to put the key in the ignition and turn it to the first position. This will turn on the lights on the dashboard.

You can then locate the override switch and press and hold it in until the alarm sounds, indicating that the alarm is now off. Some older models have a toggle switch which you need to flip to switch off.

When you want to switch the alarm on again, you just follow the same process as before and wait for the alarm to beep indicating that it is now armed again.

If you wish to totally deactivate the alarm, you can remove the fuse on the circuit that provides power to the alarm system.

On newer Toyota RAV4 models, insert the ignition key and turn the key to the run position and immediately turn it off. Do this 5 times, then turn the key to the start position and start the car.

The alarm will then be disabled.

How to Reset Toyota RAV4 Alarm

Blue SUV

To reset the alarm on a Toyota RAV4, first ensure all doors are closed, then insert the key into the ignition. Turn the key to the “On” position, but do not start the engine. Wait a few seconds, then turn the key back to the “Off” position. Repeat this process two more times. After the third cycle, start the engine. This should reset the alarm system. If the alarm is still active, try using the lock and unlock buttons on the key fob.

In addition to the ignition method, ensure that no issues with the door latches or hood latch are triggering the alarm. Sometimes, a poorly closed door or hood can cause the alarm to activate. Close all doors and the hood firmly. If the issue persists, check the battery in the key fob, as a low battery can sometimes trigger alarm issues. Replacing the battery in the key fob is a simple process and can be done at home. If these methods do not work, there might be a deeper electrical issue, and professional diagnostics may be required.

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KnowMyAuto is the sole owner of this article was published on Jun 29, 2022 and last updated on .