Skip the auto shop - Our mechanics make house calls

Q: My alarm is randomly going off

asked by on

I am having problems with the alarm system on my car. Not a day has gone by where I haven't grabbed my keys and had to run to my car because the alarm randomly goes off. I've tried opening and shutting all the doors (along with the hood and trunk), checking the sensor, and attempting to disable the battery. I have not been able to stop it from going off at random. I have had to just lock the doors manually by key in order to avoid setting the alarm. I tried calling the dealership hoping they would have some insight. All they said was to bring it in, and I work a lot so that isn't possible right now. What could be going on?

A: There are numerous reasons this may be happ...

There are numerous reasons this may be happening. However, there is a technical service bulletin (TSB) #09-BE-026 pertaining to alarm system self activation due to a defective hood switch pad.

The TSB states: The vehicle alarm system may intermittently sound due to light contact of the hood switch pad with the hood switch. The cure is to replace the switch with a revised part, which is taller. A professional, such as one from YourMechanic, will be able to diagnose your vehicle’s electrical system firsthand to determine if this is the problem with your vehicle.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Car rumbles and vibrates

A rumbling sound could be associated with a lot of different things. Being that you are able to hear it on the exhaust piping is good because the causes can be narrowed down. Depending on the mileage the chance of...

Q: Moisture in fuse box causes fuel pump fuse malfunction

For this, Silicone spray is one tool I personally like to use especially on rubber or silicone seals. The spray will leave a water-tight film on the electrical component and offers a moisture resistant coating. If you would like to...

Q: What does the immobilizer indicator mean?

The immobilizer indicator is located on your instrument panel. This light illuminates when the ignition is turned to the ON position, to let you know that the immobilizer has been deactivated. The light will turn off when you start the...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.