Skip the auto shop - Our mechanics make house calls

Q: Why does my alarm go off when I hold the brake down?

asked by on

My Saab has had electrical issues ever since I got it but today WHILE IM DRIVING IT I pulled up to a red light and stopped. Suddenly the alarm went off. I panicked and turned off the car, started it again but the alarm continued. My light turned green and I was forced to keep driving. Maybe two seconds after I let off the gas and the car idled forward the alarm stopped. Everything was normal again. Until the next red light. This happened at every stop that was for more than a second or two. Once I was at school I parked the car to see if giving it gas turned the alarm off. Nope. I reved the engine in park and the alarm kept blaring, but the moment I let it back in drive and allow the car to move it went silent again. What the hell is wrong with it?

My car has 85000 miles.
My car has an automatic transmission.

A: Hi there. It sounds like the batteries in ...

Hi there. It sounds like the batteries in the alarm siren need changing. The alarm siren is located behind the wheel arch liner and easy to get to if you remove one side of the liner. The alarm siren has two batteries soldered onto the circuit board and are meant to last the life of the siren, but they don't and typically start failing when the car is about 8 years old. Get a soldering iron and replace the batteries, but be careful not to burn the batteries. I recommend replacing the siren as a unit. If you need further assistance with your car alarm not shutting off, then seek out a professional, such as one from Your Mechanic, to help you.

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・Save up to 30%

Get a quote

What others are asking

Q: Car won't start

If the engine has no compression, I'm guessing the valves are bent from the timing chain breaking. It's not uncommon for the timing chain guides to break on these engines, taking out the chain and valves in the process. I...

Q: My brakes started grinding for no reason

You may have a problem with the wheel bearing that is noisy when you have weight of the vehicle on it. If the noise is a constant grinding noise, then it is most likely the bearing. If the noise is...

Q: Alarm goes off anytime I try to start car.

Hi there. The key fob may have lost its memory. You can reprogram your key fob to your vehicle by putting the key up to the column and pushing on the lock buttons on the key fob. Then put 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...
How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
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.