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Electrical battery drain - 2007 Lexus LS 460 L Sedan

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2008 seabring convertible smoke came off starter just put new battery on and it drained my battery so there is somethg draining it


Some electrical testing should be done on the starter circuit , connection's , cable's etc..... Voltage drop testing , Looking at wiring diagram's to see what all is involved in the starter circuit for your vehicle. Drains your battery when ? Driving ,sitting over night ? Parastic draw on electrical system ? Do you know how to test automotive electrical circuit's ? If not your best bet mite be to take your vehicle to a qualified repair shop.
Starter Voltage Drop
How to voltage drop test starter motor circuit

Nov 23, 2017 | Cars & Trucks

2 Answers

Something is draining the battery on our 2002 bmw z 3. The battery and alternator checks out good. What could be the problem??


The problem is that an electrical component in the BMW that should be dormant when the vehicle is shut down is actively drawing power.
The only way to track it down is to have tests run to see which circuit is drawing excessive power because there are numerous components that might be the cause.

You can learn more here...........
Solving Automotive Electrical Problems

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Jan 18, 2016 | BMW Cars & Trucks

1 Answer

Electrical battery drain OR "parasitic drain"


Seen this "mystery drain" many times. Check spark at the battery to see how big the drain is. For this simple test, blow away any (explosive) battery charging fumes. Leave one terminal on and gently touch the other to its post in fairly dark surroundings. Then try it again with the wires taken off the alternator. Your spark is now probably much less. Usually bad diodes leaking electricity backwards through the alternator cause this drain. Replace the alternator or the diode pack inside it. Some mechanics recommend actually measuring the drain.... hahaha. OK whatever.

Dec 27, 2013 | 2008 Subaru Outback

1 Answer

Electrical problem that periodically drains battery


could be a parasitic drain. http://www.ehow.com/how-does_4924110_car-battery-keep-going-dead.html

Feb 13, 2013 | 2003 Mazda Protege

1 Answer

2008 camry battery drain excessive drains battery


Hi my name is Tom and I can help you.

Most battery drains are shorts in the electrical system. Also, you might have a light(such as a dome light or trunk light that is not turning off.

Electrical problems are the personal hell of mechanics because one wire touching the cars ground and you have a drain which will drive you crazy. If you have the time you can check all the wiring on the car, if not take it to a shop. They will spend hours finding it and never can charge you what it is worth.

TomE

Jun 29, 2010 | 1992 Toyota Camry V6

1 Answer

Battery draining when engine is switched off


The negative terminal is the earth
The larger cable is for the engine earth so the starter will work, the smaller one is the body earth, The car needs both for the electrics to work, If you disconnect the small cable the electrics may earth back through somthing else like the throttle cable and this will not stop the battery drain

May 16, 2010 | Renault Sport Cars & Trucks

1 Answer

Electric promblem: The battery is being drained.


try checking ur alternator its what charges ur battery..Tip start ur car remove the pos cable from battery while car is on and if it turns off its ur alternator

Feb 02, 2010 | 2004 Volvo XC70

1 Answer

Have tried 2 new batteries. car starts at once. runs smoothly. but when ignition is switched off for about 30 minutes, the battery goes dead! The alt. has been checked OK. The problem started when we...


The cause is most probably a current drain on the battery when the vehicle is switched off.

Check for a drain current from the battery while the vehicle is standing with engine and all electrical system turned OFF -
[ while in this condition, if you don't have a current meter, temporarily connect a small bulb (6-12W) in series with the main battery ground cable - lamp glow indicates current drain - remove fuses, disconnect items to identify cause of current drain],

Also check alterator output voltage (measured across the battery terminals) is approx 14.5V when engine is running and electric system is loaded with headlights or blower fan on.

Oct 28, 2009 | 1994 Toyota Camry

1 Answer

Battery will drain if left connected overnight


your problem is faulty electrical, you have to trace your electrical wires for a shorted line or an electrical component is always on causing the draining of the battery.

Apr 21, 2009 | 1995 Buick Regal

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