Q: My car battery will not hold a charge

asked by on

It started one day while driving, my battery light started to flicker in a very irregular way, shortly after the cars engine began to lose power and the accessories started to dim and stop working. Eventually the engine lost all power despite the car still being on. When I pulled over and shut the car off it would not restart and neither would any accessories. After getting the car jumped it very weakly got me home. I replaced the battery and the car seemed to run fine for a few days and then the problem reoccurred. I then replaced the alternator and jumped the battery, the car started and idled but at times the accessory lights would flicker and when I turned the headlights on it killed the car instantly, as if the key was turned to off. I am not sure where to check next, could bad terminals cause this issue?

My car has 210000 miles.
My car has an automatic transmission.

Hello. This is likely related to a charging system problem. Since you have replaced the battery and the alternator, I would suggest checking the voltage regulator, which is a unit that monitors the voltage that the alternator provides to the battery when it is charging it. When this is not working properly, this can cause the battery to not charge at all or to be overcharged. Also, check the ground wire (black battery cable) opposite to the battery to be sure it is properly connected to the chassis of the vehicle. If you need any help, a technician from YourMechanic can come to your home or office and inspect why your battery will not hold a charge.

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. My car battery will not hold a charge

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 not starting; battery OK

It is still possible that the battery could be dealing with issues. The starting system would need to be checked to see if the battery or starter is in need of repairs. I recommend having a mechanic, like one from...

Q: Q: Transmission Issue

What you are describing may be a result of a faulty speed sensor, potentially low transmission fluid or a even a faulty transmission control solenoid. As your vehicle travels down the road, the computer analyzes data being sent by vehicle...

Q: My 2004 vw beetle with automatic transmission bangs into gear from the shift to first gear to second gear. Only When cold

Hey Virusboy. Thanks again for the question. It's actually a very good question. If there is an obstruction of debris inside the inner transmission hydraulic lines, it needs to be removed. In regards to the transmission (getting used to old...

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...
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...
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...