Q: Car alarm won't turn off.

asked by on January 14, 2016

My car alarm is malfunctioning. It won't turn off and the car is not starting.

If the alarm is an aftermarket alarm then if may just be defective. I have found that most alarms made aftermarket do not last long and are made of cheap relays and circuits. If you have a factory alarm then you may have a defective remote or a door switch if you used a key to open it. The system needs a code key to disable the ignition and if the key is defective it may be the cause. Try a second key and see if that works. It has to be a key that is already coded to the vehicle to work. If none of this works then give a certified mechanic a call, like one from YourMechanic, to come and diagnose your problem.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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

Headlights don't turn off, wait a bit and flash highbeam or turning car back on switch off. Otherwise, unplugging fuses

The problem can be caused by a stuck headlight relay or light control module and the control switch. I would suggest replacing the light relay first and then seek a mechanic like one from YourMechanic to do further diagnosis if...

Strong gas smell but nothing leaking under hood

Hi There, A few things may cause the vehicle to produce a strong fuel smell. A clogged or dirty EGR valve may cause the car to emit a strong fuel smell due to the excess hydrocarbons as a result of...

Can I get a high output alternator for my car for putting in a bigger amplifier?

Hello. There are aftermarket alternators on the market that you should check the internet for kits for this vehicle so you can install the larger amp. You may find that this large of an amp may require a second battery...

Related articles

Industry News for Automotive Techs: October 15-21
This week: home-brewed autonomous car, sneak peek at future Jeeps, scheming car hackers, Ram's off-road TRX concept, new turbo test kit from Lisle.
How to Shut Off the Anti-Theft Device in Your Car
Dead batteries and damaged immobilizer chips can cause anti-theft devices to stop working properly. Here are three ways to shut off your car alarm.
2012 Mazda CX-5 vs. 2012 Toyota RAV4: Which One Should I Buy?
Mid-size crossover SUVs are an excellent option when you need to take several friends along with you, or bring your kids along and yet still need to keep a tight leash on your purchase cost as well as your ongoing...