Q: Several batteries died out

asked by on August 18, 2016

The car has an automatic transmission and has gone around 40,000 miles. It has been draining batteries for no apparent reason. I went to the dealership so that they would solve this problem but they didn't find out what causes this. I have already replaced several batteries. They just die out without any warning, so when I go to start the car and put the key in the ignition, I cannot get it out as the battery died. I'm very concerned to drive the car on any longer distance as I might get stranded somewhere. Do you have any idea what could cause this?

The most likely causes are either a parasitic drain on the battery or a faulty alternator. The battery is basically just a storage device which must be constantly charged by the alternator. A battery that is partially discharged often will meet and early demise. If the alternator is OK, the next thing to do is check for a parasitic draw. Something inside the vehicle that is getting left or somehow drawing too much current, will eventually wear down the battery. A professional can check for this by placing an ohmmeter in series with the negative battery cable and checking the reading. I suggest you have your vehicle inspected firsthand to determine the true cause of the draining battery and extent of the problem. The team at YourMechanic is an excellent option since we make house calls.

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

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

What does a seat belt pretensioner do?

Seat belts are lifesaving devices, but technology has evolved beyond the point where these were just static belts that held you in place during an impact. Seat belt pretensioners are used on the driver and passenger front seat belts to...

My 03 Chevy Malibu it starts and runs for about 3 seconds then it dies.

Hi there. There could be an issue with the EVAP canister purge solenoid. The solenoid causes excessive pressure in the fuel tank and can cause the engine to stall out. If the EVAP canister purge solenoid is working properly, then...

How do the driving assist systems work?

The car is equipped with driving assist systems to help provide protection and increased performance. Antilock Brake System or ABS – this system helps prevent the wheels from locking up when you press on the brakes or when you...

Related articles

3 Ways to Increase Car Battery Life
Car battery life is 2 to 6 years. Extend the life of your car battery with regular maintenance and turning off the headlights when the engine is off.
A Buyer’s Guide to the 2012 Lexus GX 460
It It may be hard to believe, but luxury and adventure can go hand in hand – especially with the 2012 Lexus GX 460. From its luxurious interior with a variety of features to its high-quality build, off-road prowess and...
A Buyer’s Guide to the 2012 Volkswagen TDI
The The 2012 Volkswagen TDI is a diesel powered car that is fuel efficient while offering an affordable starting price. It comes in a two door hatchback or a four door compact style with an automatic or manual transmission. A...