Skip the auto shop - Our mechanics make house calls

Q: Power cutting off, then come back with the alarm going off

asked by on

The power on my car cuts off frequently. I had the battery tested and replaced it because it was bad. After the battery replacement, the car ran fine for a while. Then the power started cutting off again. The car would be without power for 15 seconds and it would then turn on again. At the point, the alarm would be activated. The same is when I use the remote to start it up. It turns off again for no apparent reason. I checked the fuses. Everything is fine. There are no dashboard lights that are on when the car is turned on. Why is this happening? I appreciate your help.

Hello. There are a couple of causes that come to mind in this case. Battery cables, electrical system grounds or the electrical control unit (ECU) all come to mind as possibilities.

It is safe to say a vehicle that completely dies intermittently is not safe to drive. The vehicle has the potential to die at the worst possible moment causing big problems. This vehicle should be diagnosed and repaired ASAP. The technicians at YourMechanic are standing by to assist you with any service needs you may have, including an inspection of your loss of power issue.

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
  1. Home
  2. Questions
  3. Power cutting off, then come back with the alarm going off

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: No crank no start

It sounds like what you are describing may be related to a faulty starter relay. The starter relay directs power from the battery to the starter solenoid which then engages the starter when you turn the key. When this is...

Q: My car has been sitting for 5 months, it starts but when I drive it it sputters and stalls, why is that?

You may need to add fresh fuel and then see if it runs better. If engine misfires then you may have fouled plugs and or bad coils. have computer tested for misfire codes to isolate the cylinder that is misfiring....

Q: Car engine sounds like vacuum cleaner.

The issue sounds like the timing belt is put on 180 degrees off making the exhaust the open when trying to start and the intake open when trying to compression. This will cause a vacuum sucking sound as the vehicle...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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...
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...