Skip the auto shop - Our mechanics make house calls

Q: Thinking of buying car. Battery changed in April 2016. Acura dealership multi-point check is showing battery failing. Could this b

asked by on

Thinking of buying car. Battery changed in April 2016. Acura dealership multi-point check is showing battery failing. Could this be a sign of a bigger problem? What would cause batter to fail test that quickly?

My car has 142000 miles.
My car has an automatic transmission.

A: Many things can cause a battery to go bad. ...

Many things can cause a battery to go bad. The vehicle could have sat for an extended period, draining the battery to almost dead. The clock, seat memory, radio memory, the alarm system, all pull a bit of voltage at all times causing the battery to go dead if left for an extended time. If the battery is not charged properly, it could cause damage internally to the battery. The battery may have been shorted at some point in time. It could also be a faulty voltage regulator, allowing the alternator to charge and discharge the battery very rapidly. This is called AC ripple hat can be tested for. I suggest having a YourMechanic perform a pre-purchase vehicle inspection to confirm what the dealership has found and to determine if there is any problems with your charging system.

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: When car idles in Drive and any electrical feature is activated, it almost stalls

The throttle plates may need to be cleaned and the idle control actuator cleaned to see if this helps first. The engine should be checked for any vacuum leaks at the intake hoses. The computer would need to be checked...

Q: Gas pedal won't work

The adjustable pedal mechanism sensor may be defective, require replacement, and have the codes cleared. Ford had a bulletin that covered this problem in 2005, and offered a free replacement of this sensor. This bulletin is no longer active, but...

Q: Battery always dies when I park the car

A weak or dead battery can be frustrating. Before having a technician work on your car, the next time you shut your car off and lock it, wait a minute and then take a walk around the car to check...

Related articles

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...
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.