Skip the auto shop - Our mechanics make house calls

Q: Oil pressure and battery light stay on when ignition is off.

asked by on

I noticed about a week ago that when I turn my car off and take the key out, the oil light and battery light stay on. This drained my battery until it died. I got it checked and charged and replaced the alternator to be safe. I also for the oil changed at a shop.

The problem persists. I have checked all connections and everything Looks okay. What could cause the oil pressure and battery light to stay on after the car is off? I have to keep unhooking the battery to keep it from draining while it sits. Note, the aforementioned lights turn off once I turn the igition on.

My car has 149000 miles.
My car has an automatic transmission.

A: Hello. If this is occurring, then there is ...

Hello. If this is occurring, then there is a short in the electrical someplace. Most of the time, the issue is in the ignition switch. The switch fails internally and causes some circuits to stay on which will drain the battery. It can also be a short in the harness or in the fuse box but the ignition switch is the most common on this car.

If you want to have this electrical issue checked out, consider having a certified mechanic, such as one from YourMechanic, come to your home or office to inspect the electrical system and suggest any necessary repairs.

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: Power steering needing fluid

Hello, thanks for your question. In order to answer your question I would need more detailed information. Power steering systems use hoses, a pressure hose, and a return hose. The pressure hose goes from the pump to the power steering...

Q: Service AWD System light is coming on

Hello. The "Service AWD System" light comes on when the computer detects that there is an issue with the AWD system. In most cases an issue with the AWD system will disable the system completely in order to protect the...

Q: I might be having transmission issues but then i think it could be a engine problem.

Hello, From what you describe it appears that whatever problem your vehicle may be experiencing has caused it to go into limp mode. Limp mode is a precautionary mode where the power and speed of the vehicle are severely limited....

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.