Q: Charging system warning light.

asked by on November 28, 2016

I have a 2011 chevy cruze LS and I've been have a battery charging system warning light come on and when it comes on the battery light come on on the dash bord and like a fue minutos later it says battery saver active and when i check the volt it on 11.8 what could be the problem this happens when im driving i don't think that is the battery because i got a new one on it what could be the problem???

My car has 81235 miles.
My car has an automatic transmission.

Alternator Replacement $149.30 - $1391.75 Get a Quote
Battery will not hold a charge Inspection $79.99 - $89.99 Get a Quote

This may be a sign of a weak battery, a failing voltage regulator or failing alternator. As you may know, the alternator is responsible for charging the battery while the engine runs by generating amperage and recharging the battery while the engine turns the alternator. The voltage regulator is a unit that regulates the charging of the battery by the alternator.

When the voltage regulator is not working properly, this may result in the alternator allowing too much power to be delivered to the battery resulting in damaging wires and prematurely sometimes destroying the battery. A common sign of this is usually the acid inside the battery boiling causing the battery to swell. In other cases it may result in the alternator not supplying enough power to the battery, resulting in undercharging the battery or not charging it at all. I would recommend having an expert from YourMechanic come to your location to diagnose your vehicle’s charging system.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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

What others are asking

Engine misfire and traction control

Hi There, It is possible that the misfire (depending on how severe) may have produced enough of a jolt in the vehicle to cause the traction control system to detect a change in the stability of the vehicle. The traction...

Front end locked up

A couple of different things could cause the front end to lock up like this, though it is a rare sort of problem to occur: the transfer case circuit has failed driveshaft issue ujoints axles locked-up brakes ...

How do I use the sunroof?

The sunroof that is available as a option in the vehicle is different depending on the model of the truck; In the extended cab model, there is a single switch with a symbol representing the sunroof printed on it...

Loss of antifreeze at air intake

A common failure in your engine is the intake manifold and intake plenum gaskets. When this happens coolant will leak under where the throttle body is located. I would recommend having a certified mechanic, such as one from YourMechanic, inspect...

Why does my traction control and ABS light keep coming on?

Hi There, It sounds like you may have a faulty ABS control module or potentially some bad wheel sensors. Your car is equipped with wheel speed sensors at each of the four wheels which monitor wheel speed while relaying this...

Won't start without holding gas pedal to floor, stalls @ intersections

Hi there. As you already know, replacing parts without diagnoses can be expensive and time consuming without resolution. The most likely cause for the symptoms you have described is a faulty fuel pressure regulator. Removing the vacuum line to the...

My car has a misfire, poor acceleration, and poor fuel burn (all the coils are good)

Hello and thanks for your question. Check the condition of the spark plugs to see if they are fouled out. If the spark plugs are in good shape, then unplug one injector at a time from the harness while the...

I have a 2011 Sonata, when I apply the brakes after driving at speeds, during the end of the stop I will hear multiple ''thud'' ty

The likely causes are a loose brake or suspension component, although even a loose motor mount could be a cause. With regard to any of those general possibilities, the noise simply occurs once the moving (loose) component reaches its end...

I have an issue with my Tahoe its idling rough the hand stays on 500 rpms but you can hear it in the engine

It would appear you have already attempted to perform all of the normal repairs to fix this issue. Due to the high number of repairs made, you may want to start by retracing your steps and confirming that all the...

Related articles

The Best Used Cars to Buy If You're a Personal Assistant
As As a personal assistant, you have a lot of demands placed on your time. Often it’s important that you be able to get around town quickly, running a ton of errands, picking things up here, dropping them off there,...
The Best Used Cars to Buy If You Love Camping
Do Do you love camping, getting back to nature and enjoying life in the great outdoors? If you do, then you know that getting there can be half the fun, and it’s even better if you have a great ride....
How Long Does an Alternator Belt Last?
Your Your car’s alternator is what delivers energy to your vehicle’s battery. It works by means of converting mechanical energy to electrical energy, taking power from the engine’s crankshaft and delivering it to the battery where it is stored. The...