Question about 2005 Pontiac Grand Prix

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My warning said battery saver activated - 2005 Pontiac Grand Prix

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Check the alternator for proper charge

Posted on Jul 16, 2009

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07 chevy uplander ran out of fuel,with 1/8 tank on way,to store now the battery save active displays when I attempt to start the van like,it set off an alarm. How can I get it running


Battery Saver Active
Refer to Charging System Description and Operation

Battery Saver Active
The BATTERY SAVER ACTIVE message will display on the driver information center (DIC) when the vehicle enters a load shed 2 event. Refer to Load Shed System Description and Operation for load shed 2 setting criteria.
Electrical Power Management
The electrical power management (EPM) is used to monitor and control the charging system and alert the driver of possible problems within the charging system. The EPM system makes the most efficient use of the generator output, improves the battery state-of-charge (SOC), extends battery life, and manages system electrical loads.
The load shed operation is a means of reducing electrical loads during a low voltage or low battery SOC condition.
The idle boost operation is a means of improving generator performance during a low voltage or low battery SOC condition.
Each EPM function, either idle boost or load shed, is discrete. No 2 functions are active at the same time. Idle boost is activated in incremental steps, idle boost 1 must be active before idle boost 2 can be active. The criteria used by the body control module (BCM) to regulate EPM are outlined below:

I dought you will be able to get it running , except by luck . The best thing you could do is have a qualified repair shop diagnose it . The first place to start would be to hook up to a factory diagnostic scan tool , Check for DTC'S - diagnostic trouble codes .

Jan 28, 2017 | 2007 Chevrolet Uplander

1 Answer

Just got my 2003 explorer sport trac dome light dont come on when you open the doors but they come on when you push the button to turn them on how do I get them to come on when I open the doors?????


The instrument cluster illuminates the interior lamps when an unlock signal is received from the vehicle security module. The illuminated entry feature will be canceled when any of the following conditions are met:
  • 25 seconds have elapsed since the illuminated entry feature was activated and the interior lamp control is not activated (door ajar or courtesy lamp switch on).
  • The instrument cluster receives a request from the vehicle security module (remote transmitter lock button pressed) and the interior lamp control is not activated.
  • The ignition is in the RUN or START position and the interior lamp control is not activated.
The instrument cluster illuminates the courtesy lamps when any door is open or ajar. The courtesy lamps shuts off when the doors are closed and the illuminated entry feature is not active or when the vehicle speed is greater than 5 mph (8 km/h). The interior lamps are not reactivated until the vehicle speed is less than 3 mph (5 km/h) and a new door open warning lamp signal is received.
The instrument cluster controls the courtesy lamps illuminated entry function by activating the battery saver relay.
The panel dimmer switch is integrated into the headlamp switch and controls the interior lamps by activating the instrument cluster through circuit 1034 (BK/WH).
The vehicle security module sends a signal to the instrument cluster on the UBP network circuit to indicate a request to turn the illuminated entry feature on or off.
The on-demand lamps, glove compartment assembly, homelink module, puddle lamps and illuminated vanity mirrors are controlled by the battery saver relay. The battery saver relay becomes active (relay coil is energized) when the instrument is in the awake mode, or in the sleep mode (relay coil is de-energized).

Nov 28, 2016 | 2003 Ford Explorer Sport Trac

1 Answer

I HAVE A 2008 IMPALA I JUST GOT A NEW ALT,AND BATTERY BATTERY SAVER ACTIVE COMES ON AFTER IT RUNS A FEW MIN WHAT COULD THE PROBLEM BE


Electric Power Management
The vehicle has Electric Power Management (EPM) that estimates the battery's temperature and state of charge. It then adjusts the voltage for best performance and extended life of the battery.
When the battery's state of charge is low, the voltage is raised slightly to quickly bring the charge back up. When the state of charge is high, the voltage is lowered slightly to prevent overcharging. If the vehicle has a voltmeter gage or a voltage display on the Driver Information Center (DIC), you may see the voltage move up or down. This is normal. If there is a problem, an alert will be displayed.
The battery can be discharged at idle if the electrical loads are very high. This is true for all vehicles. This is because the generator (alternator) may not be spinning fast enough at idle to produce all the power that is needed for very high electrical loads.
A high electrical load occurs when several of the following are on: headlamps, high beams, fog lamps, rear window defogger, climate control fan at high speed, heated seats, engine cooling fans, trailer loads, and loads plugged into accessory power outlets.
EPM works to prevent excessive discharge of the battery. It does this by balancing the generator's output and the vehicle's electrical needs. It can increase engine idle speed to generate more power, whenever needed. It can temporarily reduce the power demands of some accessories.
Normally, these actions occur in steps or levels, without being noticeable. In rare cases at the highest levels of corrective action, this action may be noticeable to the driver. If so, a Driver Information Center (DIC) message might be displayed, such as BATTERY SAVER ACTIVE, BATTERY VOLTAGE LOW, or LOW BATTERY. If this message is displayed, it is recommended that the driver reduce the electrical loads as much as possible. See DIC Warnings and Messages.
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Dec 28, 2015 | 2008 Chevrolet Chevrolet HHR LT

1 Answer

Battery saver comes on battery light wont start like low battery started 5 min before code p062f comes up


Since you give no make , model or year of vehicle, I will assume it is fairly new if it has a battery saver feature. New cars are programmed to shut down non essential components to conserve power to start a vehicle that has marginal voltage to start the engine. Seems your battery is dying and your car is warning you that it may not start if the problem is not attended to ... Have your electrical starting system checked. Battery alternator, and load check.. Replace battery or alternator if needed.

Feb 12, 2015 | Cars & Trucks

1 Answer

What does if mean when battery saver is activated on 2004 Cadillac cts


Generally it means you are drawing more power than the alternator is putting out, or if the engine is off the stereo or some other accessory is drawing power. The battery saver is warning you that you have just enough power left to start the engine. Could also mean you have a bad battery connection or your alternator is not putting out over 13 volts. If the engine is idling with air conditioning and stereo on for any length of time it could also trigger this warning as the alternator at idle speed may be unable to keep the battery at full.

Jul 21, 2014 | 2004 Cadillac CTS

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I have 2000 F-250 super duty with charging issues. Truck died on way to work. Put a new Ford alternator on it but still not charging. Took alternator to alternator shop to test. Tested good. Checked and...


Have the battery checked. There were a few years when Ford had an odd problem. The battery saver feature was designed to disconnect power draining equipment to leave you with enough juice to get the truck started. BUT it has been known to disconnect the charging system even at expressway speeds.

If the battery is weak enough to make the Alternator work too hard, the battery saver sees this as a power using problem and disconnects the charging circuit.

It is a sneaky problem and even using a battery charger the truck could be running and showing a charge, but disconnect the charger and it is a TIMED activation of the battery saver.. It activates after a few minutes and then your truck will discharge.

Another possibility is the plug-in for the small wires going to the alternator brushes. When you plug the plastic clip into the Alternator, the wires may not be sliding on the terminal. Often the wires ride up the plastic clip and fail to make contact with the terminal. In the store, they use their harness and clip and the terminal makes contact and works.

Oct 10, 2013 | Cars & Trucks

1 Answer

I need to disconnect the battery on my 2001 E46 325i and the bmw dealer has told me there is no code for the radio in this model...does anyone know if this is correct?


TURN OFF RADIO FIRST BEFORE DISCONNECTING THE NEGATIVE BATTERY CABLE BUT.THATS NO GUARANTEE YOU WILL LOSE RADIO CODE I WOULD TRY TO USE A BACK UP MEMORY SAVER YOU PLUG IN THE CIGARETTE LIGHTER BUT NO GOOD IF CAR GOING TO BE DOWN LONG.TIME BECAUSE THE MEMORY SAVER BATTERY WILL GET WEAK YOURE IN TROUBLE.BMW WARNS IF YOU DISCONNECT BATTERY CABLES YOU WOULD LOSE HEATING COOLING CLIMATE CONTROL.YOU ALSO WILL LOSE FUNCTION TO WINDSHIELD WIPERS AND WASHER , CENTRAL LOCKING AND THEFT SYSTEM CONTROL.

Aug 11, 2010 | 2001 BMW 325

2 Answers

Door panel lights wont turn off


push the door switches in by hand and see if the lights go out. Here's some diagnostic info:

Vehicles may be equipped with either a generic electronic module (GEM) or a central timer module (CTM) depending on vehicle options.
  • Vehicles with 4-wheel drive or the power group option will be equipped with a GEM.
  • Vehicles with 2-wheel drive and no power group option will be equipped with a CTM.
Courtesy Lamps The GEM and the CTM illuminate the interior lamps when any door is open or ajar. The interior lamps are: the interior lamp, the cargo lamp and the door courtesy lamp. The courtesy lamps will shut off when:
  • The doors are closed and the illuminated entry (GEM only) feature is not active.
  • The vehicle speed is greater than 15 mph (24 km/h). The interior lamps will not be reactivated until the vehicle speed is less than 10 mph (16 km/h) and a new door open warning lamp switch signal is received (GEM only).
The system inputs to the GEM/CTM are as follows:
  • The door open warning lamp switches. (Grounded when door is ajar; an open circuit when the door is closed.)
  • The vehicle speed sensor (VSS) input. (Sinusoid Wave: 0.7V-20V, 2.2 Hz/MPH [1.37 Hz/km/h] [GEM only].)
The system output to the GEM/CTM is as follows:
  • The interior lamp relay coil output. (Grounded when activated; open circuit when deactivated.)
Interior Lamp Relay The GEM and the CTM control the interior lamps and illuminated entry function with the interior lamp relay.
The relay is activated by applying ground to the relay coil through GEM C267-15, and is deactivated by removing the ground signal.
Panel Dimmer Switch The panel dimmer switch is integrated into the headlamp switch and controls the interior lamps by activating the interior lamp relay.
Illuminated Entry (GEM Only) The GEM illuminates the interior lamps when an unlock signal is received from the remote anti-theft personality (RAP) module. The illuminated entry feature will be canceled when any of the following conditions are met:
  • 25 seconds have elapsed since the illuminated entry feature was activated and the courtesy lamp feature is not activated.
  • The GEM receives a request from the RAP module (remote transmitter lock button pressed) and the courtesy lamp feature is not activated.
  • The ignition is in the RUN or START position and the courtesy lamp feature is not activated.
The illuminated entry inputs are:
  • RAP illuminated entry request. (Grounded pulse of varying length.)
  • Ignition switch in the RUN position. (Battery voltage on both the RUN and RUN/ACC inputs.)
The illuminated entry outputs are:
  • Interior lamp relay coil output. (Grounded when activated; an open circuit when deactivated.)
RAP Module The RAP module sends a signal to the GEM on the illuminated entry request circuit to indicate a request to turn the illuminated entry feature on or off. Circuit 1013 (BR/LG) is normally sent 12 volts by the GEM. The RAP module shorts this circuit to ground with a pulse of either of the following lengths:
  • 200 ms pulse from RAP receiver assembly requests illuminated entry ON (unlock button pressed).
  • 300 ms pulse from RAP receiver assembly requests illuminated entry OFF (lock button pressed).
GEM Sleep Mode The GEM and the CTM sleep mode deactivate all outputs to conserve battery power. Sleep mode is entered when the ignition has not entered the RUN or ACC position and 45 minutes has elapsed since the last wake-up input was received. In this mode, GEM current consumption is reduced to 5.0 mA or less. During sleep mode the GEM monitors the following wake-up inputs:
  • Both front door open warning lamp switches.
  • Ignition switch in the key-in, ACC and RUN position.
  • RAP illuminated entry request.
The GEM sleep mode outputs are:
  • None. (All circuits are deactivated during sleep mode.)
If a change in any of the above inputs occur while the GEM is asleep, the GEM will wake up and monitor all of its inputs and have the ability to activate any of its outputs.
The following components are under the control of the battery saver relay:
  • Interior lamp.
  • Engine compartment lamp.
  • Glove compartment lamp.
  • Panel dimmer switch.
  • Interior lamp relay.
The battery saver relay becomes active (relay coil is energized) when the GEM is in the awake mode, and is deactivated (relay coil is de-energized) in the sleep mode. The battery saver will remain active until the ignition switch is removed from the ACC or RUN position and 45 minutes have passed since the last active input was received (see sleep mode inputs). At that time, the relay will be deactivated and power to the above circuits will terminate.
The battery saver inputs are the GEM sleep mode inputs.
The battery saver output is the battery saver relay.
Inspection and Verification — GEM/CTM
  1. The interior lighting system is a generic electronic module (GEM)/central timer module (CTM) controlled system. Refer to Section 419-10 for additional information regarding GEM/CTM diagnostic strategies.
  1. Verify the customer concern by operating the interior lamps.
  1. Visually inspect for obvious signs of mechanical and electrical damage.


Visual Inspection Chart Mechanical Electrical
  • Switch(es)
  • Fuse(s) 14 (15A), 15 (5A), 4 (5A), 8(5A), and 103 (50A).
  • Wiring harness
  • Loose or corroded connector(s)
  • Circuitry open/shorted
  • Bulb(s)

  1. If the concern remains after the inspection, connect the New Generation STAR (NGS) Tester to the data link connector (DLC) located beneath the instrument panel, and select the vehicle to be tested from the NGS menu. If the NGS does not communicate with the vehicle:
    • check that the program card is correctly installed.
    • check the connections to the vehicle.
    • check the ignition switch position.

Oct 07, 2009 | 1999 Ford F250 Regular Cab

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