Q: Changed battery twice in 2 weeks, I go to turn on and car is completely dead not even the lights work, what could it be? 2000 Acura TL

asked by on

I just got my car back friday after having the transmission fixed and noticed it making weird sounds like its idling weird and last week battery was completely dead not even lights worked and now again today I went to turn on the car and nothing! no lights the locks didn't even work and I didnt drive it all weekend. Why would it keep dying like that?

My car has 200000 miles.
My car has an automatic transmission.

Hi there - a repeating "dead battery" scenario has a couple of possibilities. One possibility is a bad alternator that is not charging properly. With the engine running, the system voltage should be close to 14 volts if the alternator is charging correctly. The second possibility is that something is draining the battery when the car is turned off. This problem can be diagnosed by connecting an ammeter to the positive (red) battery cable, observe the current drain (likely less than 1 amp), then, one at a time, remove each fuse, check to see if the current drain has dropped to near 0, then reinsert the fuse. This process should identify the faulty circuit in most cases. A professional mechanic, like YourMechanic, can perform this diagnostic procedure for you, and replace/repair the failing component.

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. Changed battery twice in 2 weeks, I go to turn on and car is completely dead not even the lights work, what could it be? 2000 Acura TL

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: No control over steering

If you really have zero control over steering the wheels it sounds to me like something more serious has broken. The rack and pinion itself has failed, or the intermediate shaft between the steering column and rack and pinion has...

Q: All my warning indicator's are on and the car won't start 2008 Chevrolet Malibu

Hi there - the security system is intentionally invoked after a battery replacement. Turn the ignition key to the "On/Run" position, and leave it for 10-15 minutes in this position. The security light will go out, then you can start...

Q: Ive been having issues with my car constantly need to have a jump in order to drive it. i bought a new battery and its still on

Continued jump starting is not recommended due to both personal risks and the possibility of damaging the car's electrical system. As far as the causes of the no start, if the issue is a discharged battery the alternator might not...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...
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.