Q: My alarm key for my car won't work

asked by on October 14, 2016

I'm currently at school and my car alarm keeps going off even though I unlocked it.

You may need to shut your door, lock your door again, and then try unlocking it. If that doesn’t work you may need to replace the battery in your remote. Unfortunately, without more information about the vehicle, it will be difficult to provide any additional insight on this issue.

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Fans not working, and car overheats
If your fans are not coming on, that is likely why the vehicle is overheating when still. This may or may not be related to the air conditioning not functioning correctly. I would recommend having a professional technician, such as...
EPC keeping car from starting
The EPC light is indicating a fault in the electronic throttle control system. The best way to narrow down the issue is to read out the fault codes in the engine management system; there could be issues with the throttle...
My car won't start when I turn the key, I have to press on gas for it to start
Hi there. It sounds like a coincidence that it started when the gas pedal was pressed. The most common issue on the Mazda 6 is the key itself. If the computer does not pick it up correctly, then it will...
Tiny pin sized hole on hot water heater elbow connection
Hello, thanks for writing in about your Mazda. I believe the component you are describing is part of the heater core where the coolant hoses from the engine connect at the firewall. Most likely these copper or aluminum pipes are...
When the electric power steering system warning comes on, the car immediately loses gas and slows to a halt.... why does it do th
Hi there. Are there any other lights illuminated? When the EPS light does come on, the electric steering system has detected a fault and can cause the vehicle to proceed into what may seem like a limp mode; we wouldn't...
Car sputters after 3000rpm and cuts out
You said that you changed the fuel filter and cleaned the tank, but did not say weather you had checked the fuel pressure. Checking the fuel pressure(s) is an important Diagnostic step on the old 240's with the K Jet...
My car's Check Engine Light and EPC dash lights are on. And shakes in idle after driving through a flooded street.
Hello, The check engine light (https://www.yourmechanic.com/services/check-engine-light-is-on-inspection) may have come on for many different reasons, however most likely as a result of driving down a flooded street, this may have caused various sensors to get wet triggering the rough idle. The...
Whining noise in my 2008 Mitsubishi Lancer's CVT Transmission
Check the transmission fluid level and condition. The oil cooler can fail, causing loss of enough fluid to cause noise from the transmission. There is a manufacturer Technical Service Bulletin relative to parts failure in the transmission accompanied by a...

Related articles

How to Disable a Car Alarm
Car alarms can be shut off by starting the car, unlocking the car door, or disconnecting the battery. Maintain your key fob to cancel future alarms.
How to Pick an Alarm For Your Car
Your vehicle is an important part of your everyday life. It is important to protect your vehicle from damage and burglary (https://www.yourmechanic.com/article/how-to-prevent-having-your-car-stolen) using a car alarm. A car alarm is an excellent investment towards your vehicle’s security. It can: Prevent...
How to Reset a Car Alarm
A A car alarm that is not working at all or not working properly can be extremely annoying to you and your neighbors. It may also put your vehicle at an increased risk for theft (https://www.yourmechanic.com/article/how-to-keep-your-vehicle-safe-from-theft) or vandalism. Almost all...