Question about 2004 BMW Z4

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Battery discharge battery will discharge if not used for 4 or 5 days

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Take your Battery into Autozone and have them CHARGE IT and then TEST IT, if the CCA's are low, then you need to replace the battery.

Remember that there is a Difference between Voltage and AMPERAGE.

Posted on Feb 13, 2014

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Posted on Jan 02, 2017

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Check alternator charge rate and earth straps

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I have a 2003 ford focus wagon second hand. My battery died out and I thought the alternator was the problem. Brought my car to an alternator repair shop and they said the alternator is still good. I ended...


Lead acid batteries don't like being discharged flat, and it could now be damaged and unable to hold a charge. It does sound as though the voltage regulator part of the alternator is allowing discharge to ground when it should not. You would seem to have a good warranty claim on the battery given they did check the alternator and pronounce it OK.

Nov 04, 2013 | 2003 Ford Focus

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Lights on the dash and radio dim in and out after starting But runs fine. Also the powered locks won't open with a remote it all happened at the same time. The car is a 2007 handa civic With 90,000 Km


old post day. zero resp. i fill vacuums.
answer low battery voltage. lots of ways, can be....
in no ORDER, only testing finds TRUTH.
1: bad battery ( or just discharged)
2: you cranked the battery flat. (discharged)
3: the Charging system is bad. (battery then becomes discharged)
4: corrosion in the the wiring and connectors in the above.

even a rusty fuse , on older cars. but too is #4

Sep 11, 2013 | 2007 Honda Pilot

1 Answer

Battery keeps draining when car sits for several days.


Try this to see if you can find the drain: Wait until the car has been off for a half hour, so computer is in sleep mode. Open hood and remove underhood light bulb. Take off negative cable from battery and hook up a test light between cable end and battery post. If you have a drain, bulb should be brightly lit. Start removing fuses one by one until light goes off. When a fuse is pulled that turns light off, that is the problem circuit. Check everything on that circuit to find what is staying on.

Jan 23, 2013 | 2002 Lexus RX 300

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BATTERY PROBLEM


Ultimate solution is change the battery... because the capacity of battery cells is poor.. this could be the reason if battery is old...
Still u can take a chance by completely removing the battery fluid and replacing it new battery fluid... but keep in mind that, after doing so, u'll need to charge the battery fully before using it in car...
This kind of battery problem is common in all diesel cars, the reason I think is, Diesel engine need heavy torque to start that draws heavy current from battery.. so if you are facing starting trouble for the vehicle, then battery is surely going to discharge frequently...
Still try the solution mentioned above and still the problem persists, then replace the battery with new one.
((I am considering that the battery you are having is 3-4 years old...))

Oct 16, 2012 | 1997 Ford Escort

1 Answer

The battery keeps running down when the car sits idle for a few days. The alternator has been tested and verified to be in good working order.


most obvious cause is a diode in teh alternator but it could be the boot light thats another favourite ,or just the battery is sulphated up and needs desulphating as follows -discharge battery with 6 watt bulb when completely flat put on a trickle charge ,when fulkl discharge again and then recharge ,4/5 times and the battery amp hour capacity will improve ,then it will take a month to go flat which is about right on a modern car unless it has a shut down mode ,

Nov 24, 2010 | 1998 Buick Riviera

1 Answer

My 85 mercedes has a dead battery and a smoky smell inside.


the car may have a surface discharge which causes the battery to discharge on its own because the car just draws a little current constantly from the battery until it cant handle it any more. use a Midtronics powersensor micro500 tester this may help in finding out if it is a surface discharge or bad battery nothing else.

Mar 02, 2010 | 1985 Mercedes-Benz 300

1 Answer

MY BATTERY DISCHARGES AFTER 3/4 DAYS PARKED


My 1992 Park Avenue had a timed relay that shorted out. This is the one that allows you to have the radio on etc. until you open the door. It shorted closed and discharged the battery. It took awhile for the shop to find the cure but once they replaced the relay all worked great.

Jan 14, 2009 | 1992 Buick Park Avenue

1 Answer

Battery discharegd every 4th days if the car is parking


Hi,
Possible causes for battery being discharged while installed in a vehicle could include among others:
  • a shorted diode (out of 6) in the alternator;
  • dome/courtesy light left on or switching on;
  • faulty/wet,corroded door switches;
  • false triggering of the alarm;
  • partially faulty car stereo system (memory retention).
Just a start, do postback how things turned up or should you need additional information. Good luck and Thank you for using FixYa.

Nov 22, 2008 | 2000 Honda Odyssey

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Discharging of the batteries at night.


it could be a faulty battery or you have a constant drain on the battery, i.e alarm/ radio/central locking if installed any drain on the battery needs to be checked..

Dec 24, 2017 | 1993 Mitsubishi Mirage

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