Skip the auto shop - Our mechanics make house calls

Q: Battery is dying, even after a jump start.

asked by on

My 2006 Rav4 seems to have bad alternator, although battery and alternator were changed 2 years ago. After jump start, car starts but dies down after few minutes which implies the bad alternator. I will have to get replaced so I need approx cost in NJ. I guess the alternator is about 120-150 bucks and what would be the labor cost?

My car has 150000 miles.
My car has an automatic transmission.

A: As you know the alternator is responsible f...

As you know the alternator is responsible for charging the battery and when not working properly will cause the battery to die prematurely. This may also be potentially related to the voltage regulator not working properly.

This is a unit that regulates the charging of the battery by the alternator to ensure that it is not over charged or under charged and the correct amperage is maintained. When this is not working properly, this may result in the battery not being charged with an otherwise good alternator.

To avoid any unnecessary repairs, I would recommend having an expert from YourMechanic come to your location to properly diagnose the issue with your battery and help you fix it accordingly.

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: Put key in ignition, but nothing happens

The battery would of been drained after sitting for a year. The battery may have been drained to the point it may not be able to be charged and would need a replacement. Also the fuel in the car may...

Q: Car shuts off after a few miles

Hello. The most common cause of this on your car is a bad crank position sensor. These fail all of the time on this car and will cause it to stall. I usually install a scan tool and check for...

Q: Car want start bit turns over rrrrr sounds when key is in the hole

Hello there, It sounds like you have a few different issues going on. I will address each individually but they all probably play together. It would appear your oil has sludge in it or has turned to sludge, Toyota's had...

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...