Skip the auto shop - Our mechanics make house calls

Q: Battery Light

asked by on

I just purchased a 2002 Volvo S40 with 145k miles, one owner, pretty clean. I was wondering what to expect from this model/year of Volvos? Also, when revved high (4,5,6000 RPM), the battery light flickers and the lights and gauges dim.

Thanks

My car has 145000 miles.
My car has an automatic transmission.

Hi there:

In most cases when the battery light comes on, it’s an indicator that the alternator is faulty or starting to show signs of wearing out. If this occurs only when the RPM is revved high, it might be a sign of a faulty alternator belt pulley (which powers this system once the vehicle has been started). Volvo’s can be very tricky to maintain over 150,000 miles, so you might want to have a professional mobile mechanic complete a battery light is on inspection; so they can diagnose why the light is coming on and recommend the right repairs.

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: replaced the starter. went to connect the negative battery terminal, the starter made a whirring sound and sparked at terminal.

Electrically, there a couple scenarios that can account for this, all equally odd, but if you were not having any problems with the car's starting circuit prior to replacing the starter (i.e., just the starter motor failed) and you have...

Q: My vehicle keeps overheating.

Hi there. The overheating condition could be caused by three different things on your vehicle. Plugged Radiator Water pump failure Burned head gasket The radiator could be plugged up causing the coolant to not flow when the engine...

Q: Master cylinder losing fluid and I can't find leak.

It is possible that your brake fluid could be leaking into the power brake booster. This is the big round container that the master cylinder is bolted to. The brake booster operates off of the vacuum created by the engine...

Related articles

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...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.