Q: The car battery doesn't seem to be charging I replace the alternator and the battery the car runs for about 10 minutes and everyth

asked by on

My Mercedes runs about 10 minutes and everything electrical shuts down and the car dies I have replaced the battery an alternator what's next?

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

This may be related to a failing voltage regulator or potentially a bad ground connection. As you may know, the voltage regulator regulates the amount of charging the alternator provides to the battery. When this is not working correctly, this can cause the battery to not charge properly. The other possibility may be potentially a bad ground connection somewhere in your electrical system or potentially a short which may cause the power failure you’ve described. I would recommend having an expert from YourMechanic come to your home to take a look at your charging system.

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. The car battery doesn't seem to be charging I replace the alternator and the battery the car runs for about 10 minutes and everyth

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: Q: No power when accelerating

A faulty throttle position sensor can most certainly duplicate all of the symptoms that your Mercedes is experiencing, however a faulty fuel pump or even a defective mass airflow sensor can be the cause to these issues too. I have...

Q: Need to know the A/C relay location on a 1982 European Mercedes-Benz 280sl.

The relay is on the driver side right next to the brake booster and master cylinder. It looks like a large black block by the fender. For the compressor to not have power to it, check the low pressure switch...

Q: Oil leak coming from behind intake and transmission.

You could have a couple causes of the oil leak at back of intake manifold. This engine oil pressure sending unit is the most common leak in this area of the engine. Replace oil pressure sender if leaking. The best...

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...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...