Question about 2002 Cadillac Deville

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Service charging system and battery not charging sensor lights are on

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You may need to go have your alternator tested at you local auto parts store. It sounds to me like your alternator is bad. Hope this helps, James Booth

Posted on May 17, 2011

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Posted on Jan 02, 2017

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I have a 2000 Chrysler Concorde, and the battery light keeps going off an on. I've already bought a new battery and Crankshaft Position Sensor. It's been starting hard and the battery just died in it.


Did you have the alternator checked? When the battery light comes on, it indicates either the battery is very bad and is draining power from the system, or the alternator is not providing enough voltage to keep the battery charged.
Once you have the electrical problem taken care of, and the system is getting proper voltage, you can see if you continue to have problems with the engine performance. (The crankshaft position sensor has nothing to do with battery charging)

Sep 08, 2016 | 2000 Chrysler Concorde

1 Answer

2012 Grand Caravan. How do I turn the battery light off after installing a new battery?


Test the alternator. The battery light is for the charging system. Once the charging system is working with the engine running, the light should go off. If your light stays on with engine running, the alternator may need service or replacement.

To test the charging system, just put a voltmeter on the battery with engine running. The voltmeter should register at least 13.5 volts- alternator is charging. If you only show battery voltage with engine running, like 12.2-12.8 volts, the alternator or charging system is not working. The battery light should be on to signify this.

Jun 17, 2015 | 2012 Dodge Grand Caravan

1 Answer

Battery light is coming but charging is 15.45


The light will come on if it over charges too ! all vehicles have computer controlled charging system now a days !
Regulated Voltage Control Explained Regulated Voltage Control uses information from the battery current sensor, calculated battery temperature and system voltage to determine what the perfect voltage to supply the battery with is. In addition to nurturing the battery into longer life by maintaining proper state of charge, RVC allows the charging voltage to drop below the 13.8 to 14.8 volts to which we're all accustomed. If the battery can maintain an 80% SOC with 13 volts at a particular temperature, why would we want to charge it at 14.8 volts?

Apr 29, 2015 | Cars & Trucks

1 Answer

Emissions System warning keeps coming on. Mechanic & muffler shop disagree.


Start with the first mechanic who replaced the battery and have them check the charging system. (Alternator) They should have done this when changing a battery, to rule that out as a problem in the first place. Explain the problems you have been having, as a bad charging system can cause all sorts of electronics problems and have them check the engine codes and have them explain what they are.
You could also go back to the muffler shop and tell them their sensor replacement did not fix the problem and have them correct their work.
Diagnosing Alternator Problems EricTheCarGuy

Mar 23, 2015 | 2007 Acura MDX Tech

1 Answer

Im having a problem with my 2005 ford freestyle. I can be riding down the road and it just shuts off.. no wierd noises no warning just shuts off. I dont have any trouble re starting it and now the check...


If you would like some guidance we need to know what the codes were ????? Battery light on charging system (alternator) Problem . The charging system on your vehicle is computer controlled . (smart charging system ) Do you know how to do automotive electrical testing ? Ford Smart Charge System Alternator Not Charging
Your vehicle also has electronic throttle control , the gas pedal is electric - has postion sensors , these sensors input to the PCM - engine computer , in response to these inputs the PCM controls a dc motor on the throttle plate . To check this there are also position sensors at the throttle body. These sensors do wear over time . Having it tested professionally would be your best bet an not guessing as to the problem .

Ford Electronic Throttle Body Failure Diagnosis

May 10, 2017 | 2005 Ford Freestyle SE

1 Answer

All the lights came on in my 2006 buick lucerne and the saying service battery charging system occured


There is a solar sensor on the middle of the dashboard if you want the lights to be on all the time cover the sensor and the dash lights will be on all the time. I suggest tape some cardboard over it. It is as big as a quarter. Put some duct tape over it. Thing is your headlights will switch to your night driving lights during the daytime if they are left on.

Dec 24, 2013 | 2006 Buick Lucerne

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I drive a 93 GMC Sonoma p/u. I drove out of town and noticed that the radio was not working. Next the service engine soon idiot light lit up. Once on the highway, the spedometer was not working. Hmmmm


It is possible that there may be a battery/charging system problem (in which case, the next step will be that the engine will not run). Then again, you may have separate problems. The radio not working and the Check Engine light turning on might not be related at all. However, a failed Vehicle Speed Sensor (VSS) or open/shorted VSS circuit would make the speedometer quit working AND cause the Check Engine light to come on.

Proper diagnosis is the only way to find out for sure.

I would BEGIN by performing a thorough battery/charging system test. Then you need to scan your onboard computer to find out WHY it has turned the Check Engine light on. This should be done BEFORE the battery cables are disconnected for any kind of charging system or battery repair. Once the cables are disconnected, the computer memory will be lost and you will not get any codes to tell you why the computer has turned the light on. You MAY have a charging system-related code like "Voltage Low At Module" or you MAY have a totally different code like "VSS Circuit Open or Shorted". You need to find this out before making ANY repairs.
However, if the charging system tests faulty and/or you have any charging system fault codes, ALL fault codes should be recorded and the battery/charging system problem needs to be dealt with FIRST. (you cannot trust what the computer is telling you if there are charging system faults.) If after this, any symptoms persist, diagnosis of any other fault codes retrieved should be performed.

If all engine control problems are resolved and your radio still does not work, you need to diagnose your radio circuits as a separate problem.

Jan 02, 2012 | Cars & Trucks

1 Answer

I have a 2002 Cadillac DTS. It randomly dies when


Had same problem,called my Cadillac buddy and he said pick up both crankshaft position sensors.Charged me $100 cash and has not stalled again,drove me nuts for two years.

Jun 18, 2009 | 2002 Cadillac Deville

1 Answer

Emission service


yes have your charging system checked

Jun 13, 2017 | 1996 Cadillac Seville CA Value

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