Question about 2004 Volvo S40

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04 volvo s40 t5 won't start

Will not start.. message says low battery power save mode...

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Have battery charged fully. start car test the output voltage of your alternator. do this by probing the batt pot terminal on backside of your alt. if it is good it must be above 12.35v if not replace

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Posted on Apr 17, 2009

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2007 Impala 3.9 died while driving,will not spin over,or come out of park.Also gear indicator will not show what gear you are in. No codes.


Will not spin over ? When you turn the key to start ,the starter doesn't engage an spin the engine ? Dash light's come , headlamps come on bright ? Battery good , charged ? No codes ? just engine ,OBD 2 codes ? BCM codes ? How or what did you use to check codes ? code reader , scan tool ? A professional type that can read BCM - body control module codes ? Do you have any idea how complex the electronic's are on this vehicle ? Do you know what happen's when you turn the key to start ?

Power Mode Master
This vehicle body control module (BCM) functions as the power mode master (PMM). The ignition switch is a low current switch with multiple discrete ignition switch signals to the PMM for determination the power mode that will be sent over the serial data circuits to the other modules that need this information, and so the PMM will activate relays and other direct outputs of the PMM as needed. Refer to Power Mode Description and Operation for a complete description of power mode functions.

The body control system consists of the body control module (BCM), communications, and various input and outputs. Some inputs, outputs and messages require other modules to interact with the BCM. The BCM also has discrete input and output terminals to control the vehicle's body functions. Battery positive voltage is provided to the BCM from the BCM fuse in the underhood fuse block. The module has two grounds at G 202 as well as one directly to the vehicle battery. The BCM is wired to the GMLAN High speed serial data buss and the GMLAN Low speed serial data buss and acts as a gateway between them. If the BCM does not communicate the vehicle will not start due to the inability of the engine/powertrain control module (ECM/PCM) and vehicle theft deterrent (VTD) control module to communicate without the BCM providing the gateway function.

Gateway
The body control module (BCM) in this vehicle functions as a gateway or translator. The purpose of the gateway is to translate serial data messages between the GMLAN high speed buss and the GMLAN low speed buss for communication between the various modules. The gateway will interact with each network according to that network's transmission protocol.
One example of this necessary communication is the communication between the engine/powertrain control module (ECM/PCM) which is high speed serial data and vehicle theft deterrent (VTD) control module which is low speed serial data. If these modules can not exchange information, the vehicle will not start.
All communication between the BCM and a scan tool is on the High speed GMLAN serial data circuits. A lost communication DTC typically is set in modules other than the module with a communication failure.
If you don't know of any of this ,your best bet , take it to a qualified repair shop.

Jan 26, 2018 | Cars & Trucks

1 Answer

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

My xc90 wont start but just crank, this after message low battery power save mode. i have charged the battery but it wont start.


i moved you from suzuki
to volvo

here in usa we dont have them now
cept the rare old school teachers, hell bent to keep this dog.

step 1
check fuses.
2: CHECK FOR SPARK on #1 then all if #1 fails.
3: sparks good try test fuel spray.
runs for 1 -2 seconds, the engine and sparks ok
must be fuel.
if not bad engine.

Sep 30, 2016 | Volvo Cars & Trucks

1 Answer

Lights left on and the battery went flat on my lads peugeot 206 diesel 2002 recharged battery, the car will not start message on dash ECO MODE CAN ANYONE HELP WITH THE PROBLEM PROBLEM ?


Economy mode usually comes on when the computer senses a low charge on the battery and conserves power to start the vehicle.
1. If you can start the car by jump starting from another vehicle with its engine running then you know your battery is the problem. In some cases when you completely drain a battery you have issues with them ever after until they fail completely.

2. If you cannot jump start from another vehicle then turn everything off and disconnect the negative and then the positive lead on the battery terminals and leave it for 10 minutes. Then connect it back up again (positive lead first and then negative lead last) and put the key in the ignition and turn on the ignition but do not start the car. Leave it there for 5 minutes and then turn the ignition it off. Then try starting again.

3. You have not mentioned if there are any other warning lights being displayed on the dash which you have not mentioned in your question. Please check this carefully because it is also relevant to this problem if there are other warning lights displayed.

Jan 09, 2016 | Peugeot 206 Cars & Trucks

1 Answer

09 impala engine runs with key off


First off you need to read how this works . BCM - body control module is in fail- safe mode more then likely . The ingition switch is a input to the BCM . The BCM turns on relays to turn vehicle systems on . If something happens the system will fail safe to last commands by the BCM .
The body control system consists of the body control module (BCM), communications, and various input and outputs. Some inputs, outputs and messages require other modules to interact with the BCM. The BCM also has discrete input and output terminals to control the vehicle's body functions. Battery positive voltage is provided to the BCM from the BCM fuse in the underhood fuse block. The module has two grounds at G 202 as well as one directly to the vehicle battery. The BCM is wired to the GMLAN High speed serial data buss and the GMLAN Low speed serial data buss and acts as a gateway between them. If the BCM does not communicate the vehicle will not start due to the inability of the engine/powertrain control module (ECM/PCM) and vehicle theft deterrent (VTD) control module to communicate without the BCM providing the gateway function.
Power Mode Master
This vehicle body control module (BCM) functions as the power mode master (PMM). The ignition switch is a low current switch with multiple discrete ignition switch signals to the PMM for determination the power mode that will be sent over the serial data circuits to the other modules that need this information, and so the PMM will activate relays and other direct outputs of the PMM as needed. Refer to Power Mode Description and Operation for a complete description of power mode functions.

Relay Controlled Power Mode
The body control module (BCM) uses the discrete ignition switch inputs Off/Run/Crank Voltage, Accessory Voltage, and Ignition 1 Voltage, to distinguish the correct power mode. The BCM, after determining the desired power mode, will activate the appropriate relays for that power mode.
The RAP relay remains on for a timed period after the Ignition key is removed. Refer to Retained Accessory Power Description and Operation for more information on the retained accessory power (RAP) function.

You mite want to thing about taking your vehicle to a qualified repair shop. Hooking up a professional or factory scanner to view input data to the BCM ,plus checking for DTC'S - diagnostic trouble codes in the BCM , autozone , advance part stores can not read codes in the BCM .

Feb 20, 2018 | 2009 Chevrolet Impala

1 Answer

My engine light comes on and I get an


well you need to go to local part house and get the code out most will let you know what the codes are but sound like your truck is going in to limb mode to save tranmission or somthig any way come back with the code can help better

Sep 28, 2009 | 2003 GMC Yukon XL

1 Answer

2007 GMC Yukon wont start....


Ok supper Dave , let's get this stright , when you turn the key to start the vehicle , what happens ? The starter spins the engine or doesn't spin the engine ? This would be a no crank no start condition . if the engine does spin an doesn't start an run this is a crank no start condition . Now which is it ? The factory radio is hooked to the serial data communication network , did you or who ever installed the aftermarket radio use a interface module ? Are you familiar with the electronics on this vehicle ? BCM - body control module , low current inputs from the ignition switch which determine what mode to put the vehicle in ?

Case 4 Data Bus Issues

The body control system consists of the body control module (BCM), communications, and various input and outputs. Some inputs, outputs and messages require other modules to interact with the BCM. The BCM also has discrete input and output terminals to control the vehicle's body functions. The BCM is wired to the GMLAN high speed serial data buss and the GMLAN low speed serial data buss and acts as a gateway between them. If the BCM does not communicate the vehicle will not start due to the inability of the engine control module (ECM)/powertrain control module (PCM) and theft deterrent module (TDM) to communicate without the BCM providing the gateway function.

Power Mode Master
This vehicles body control module (BCM) functions as the power mode master (PMM). The ignition switch is a low current switch with multiple discrete ignition switch signals to the PMM for determination the power mode that will be sent over the serial data circuits to the other modules that need this information, and so the PMM will activate relays and other direct outputs of the PMM as needed. Refer to Power Mode Description and Operation for a complete description of power mode functions.

Sorry but I am a GM Tech . have been for over thirty years , Cadillac , Buick an Chevy .audio buds think it's something else. Your audio buds don't have a clue ? When change something you better well know what your messing with. .

Apr 11, 2017 | 2007 GMC Yukon

2 Answers

The security light is on in my 2001 chevy venture message center


Hi there,
Most commonly with these cars the security system will do this if the battery is "drained" while trying to start the car. ie: a low battery that is too weak to turn the engine over. Usualy the power options & accesories will not work if this is happening.
To fix it you will need to ensure the battery is charged, you then disconnect the battery negative cable for about 1 minute with the key out of the ignition. reconnect the battery cable & start the car normally. Everything should be back to normal.
Let me know if there is anything more you need for this concern.
Farrout!

Mar 17, 2009 | 2001 Chevrolet Venture

1 Answer

Engine failure mode message on display


Hi Keith

Probably those little Jag gremlins at it again ?

First thing to do is clear the computers memory, which normally does the trick.

Disconnect both battery terminals, switch on the ignition to start 6 times, this wipes the computer memory, and then reconnect the battery, the Positive + first......... then the Negative -----

Start the car and go from there.

Suspect you had a low battery previously, and this tripped the warning.

Get the battery checked, if it is the original, as it is now 8yrs old, and should be replaced.


Good Luck !

A FixYa rating would be appreciated Thank you !

John.






Feb 08, 2009 | 2000 Jaguar S-Type

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