Q: Car Alarm goes off when driving - 2012 Toyota Corolla

asked by on

I recently bought a preowned Corolla, the car worked like a dream, until the Toyota Dealership installed a car alarm.

When I first got it back it ran a little different, at first the steering wheel was a little loose, but that I fixed and is now the least of my problems. I noticed that the alarm light was never on, about a week later, I go to drive it, I do nothing differently. I turned on my car and when I put it in drive or reverse or neutral, I hear an extra beep like the alarm is armed. And now when I drive, it beeps a couple of times as though it's warning me, and then it goes ballistic and the alarm goes off.

I've tried everything in the manual but nothing seems to work, do you have an idea of what it might be? (Please note that sometimes I do press the LOCK button twice when I'm unsure if I've locked the car) Also another question is, is there anyway the dealership could take out the alarm and make it the way it was like the day I bought it?

My car has 69000 miles.
My car has an automatic transmission.

Hi and thank you for contacting YourMechanic. Car alarms are tricky and can drive people crazy. To my knowledge, there are several ways that the car will arm the alarm with the key in the ignition. Go around the vehicle and check all of the doors, trunk, and hood. Make sure that they are all closed. The alarm will sound if the hood is not latched correctly, the trunk is not secure and moves around, or if a door is in the first latch position leaving it unsecured.

There may be safety switches mounted on the doors, trunk, and hood to keep you safe. If everything is secured and latched, then there may be a loose wire from when the dealership installed the alarm. The dealership must have hooked the alarm up to the ignition switch, for the reason your steering wheel was a little different. When they did that, they might have crossed some wires on the ignition switch.

As far as the other question, you can have any car alarm removed as long as it is not installed into the computers wiring harness. This means that aftermarket alarms are add on’s as to where the factory alarms are integrated into the entire vehicle. If you are still having trouble with your car alarm coming on while you are driving, I would recommend taking the vehicle to the dealer to have the system inspected.

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
  1. Home
  2. Questions
  3. Car Alarm goes off when driving - 2012 Toyota Corolla

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: why does my engine still stall after cleaning distributor cap, replacing air cleaner, fuel filter and spark plug.

Cleaning your distributor cap is not usually successful. The cap can have problems that cannot be seen with the naked eye. It should be replaced along with rotor, spark plugs, and spark plug wires. The description of your symptoms certainly...

Q: Q: My car alarm is going off for no reason

Hi there. Check the sensibility of the car alarm. If the car alarm is set to a slight vibration and can pick up light vibrations, then check around the garage that would contribute to a light vibration. That may be...

Q: Car won't start; theft light on

The anti-theft system may be experiencing a fault, and in most cases, will store a code pointing to the problem component. Your symptoms are also close to those of a failing starter assembly. In this case, the vehicle may start...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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.