Skip the auto shop - Our mechanics make house calls

Q: Car alarm short

asked by on

The car alarm shorted out, and not I can't start my car.

A: I’ll assume that you are speaking of an aft...

I’ll assume that you are speaking of an aftermarket alarm. There is a huge selection of alarms on the market and they all have different features for making the car more secure. Most have a starter interrupt relay. The start wire from the ignition switch is cut and routed through the alarm. The alarm has to energize the start wire. If it shorted, whatever power source was wired to it blew a fuse or fusible link. The establishment that installed it will be the most familiar with it. The other option is to remove it and splice all of the circuits back to original condition. If you would like assistance, a certified mechanic from YourMechanic can inspect your car’s electrical system to determine what is causing the no-start.

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 is leaking coolant and overheating

You should not let the engine ever run low on coolant. When you get the system checked the mechanic will pressure test the cooling system and locate the leak or problem for you. You should not have a hot engine...

Q: Rough idle with ac and defrost on

A rough idle may be caused by many different things such as low fuel pressure, low voltage to the fuel injectors, dirty fuel injectors, a vacuum leak, a faulty Oxygen sensor or a dirty or failing idle air control valve....

Q: Should I buy this 1997 BMW 528I

Hello. BMW makes a fantastic vehicle that, as you know is well known for its performance and luxury. With that comes a little more of a price tag in terms of maintenance and upkeep as with any performance or luxury...

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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...