Q: With car off, exterior and interior lights start flashing

asked by on

The battery in my car was replaced just less than a year ago. I had gone home during the day for a couple of hours and when I returned to my car the headlights and tail lights were flashing, plus the interior lights in the car cabin were also flashing. I tried to start the car, but it would not start. The radio and windows were working, along with other things in the car, but it would not start. When I turned the ignition, it sounded like the electronic fuel pump was engaging, but when continuing to try to start the car, nothing happened. Also when I try to start the car, it does not have that usual clicking noise you usually hear; there is only a humming noise. Later, the exterior and interior lights stopped flashing. But every time I open the driver’s door and when I turn the key, the lights start flashing again. The headlights were not on when I turned off the car. I found that the battery post’s positive cable was extremely loose. I tightened it and jump-started the battery, but that did not help the problem. What is causing this problem in my car?

It sounds like somehow the anti theft system was activated and drained the battery. Try locking all of the doors from the inside and close them. Then lock, unlock, lock and unlock the doors to see if the problem persists. You will likely have to get the battery charged and tested.

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. With car off, exterior and interior lights start flashing

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 won't start after changing the fuel pump and filter

When a vehicle will not start, the mechanic will perform a series of test that are basically a process of elimination. We know that, for an engine to start it must have good compression, spark from the spark plug, correct...

Q: Q: Engine will turn over but will not start.

Hello there, many common faults will cause your 1985 Ford F-250 to crank but not start. You have done great so far in inspecting the vehicle and changing the spark plug wires, fuel pumps, and filters. There are a few...

Q: 2005 JGC want start after replacing starter and relay

Hello. The clicking noise that you are hearing is the starter not being able to work correctly. This may be due to poor starter alignment, or not enough power. Alignment can be changed with a shim. A lack of power...

Related articles

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...