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NEW BATTERY BUT LOSSES CHARGE

MY LEXUS HAS A NEW BATTERY MECHANIC SAID IT WAS NOT THE ALNATANATOR BUT STILL IN LOSES CHARGE

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  • 2,187 Answers

Usually if if your alternator is good, once you had the engine running, disconnect the battery. If the car keeps on running then the alternator is good. You may also need to use a voltmeter to measure the voltages before and after starting the car. The voltage should increase once the engine is running. The alternator may be weak or your are draining power either through a gadget installed in a car or bad wiring that you may need to inspect your wiring.

Posted on Nov 01, 2012

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SOURCE: New Alternator on 1994 Lexus, but battery loses charge

Did you ask the mechanic to change the alternator,or did you tell him to fix it? I would spell it out to the customer myself(not the service writer) that I would prefer to do the diagnosis,but if they didn't want to pay it,then there are no guarantees,and document this on the back of the repair ticket(saved me MANY future arguements!).If you told the mechanic to fix it,then take it back and say "Try again!".If you said "Replace the alternator" then that's what will be done.If you have no change after replacing the alternator,then you have to figure out what's not making it charge.Verify the large cable to the battery is good with a test light.The smaller connector requires a wiring diagram to diagnose,however.

Posted on Oct 15, 2012

  • 334 Answers

SOURCE: , battery loses its charge, grinding noise

it sound like your alternater has gone bad. and your trany is bad you will have to replace it

Posted on Jun 11, 2009

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1 Answer

New Alternator on 1994 Lexus, but battery loses charge


Did you ask the mechanic to change the alternator,or did you tell him to fix it? I would spell it out to the customer myself(not the service writer) that I would prefer to do the diagnosis,but if they didn't want to pay it,then there are no guarantees,and document this on the back of the repair ticket(saved me MANY future arguements!).If you told the mechanic to fix it,then take it back and say "Try again!".If you said "Replace the alternator" then that's what will be done.If you have no change after replacing the alternator,then you have to figure out what's not making it charge.Verify the large cable to the battery is good with a test light.The smaller connector requires a wiring diagram to diagnose,however.

Oct 14, 2012 | 1994 Lexus Es 300

2 Answers

My 2004 430 Lexus ran fine yesterday, but did not start this morning. minor clicking noise. New Battery???


Hello! Clicking noise is always dead battery. Get a jump, remove the +Positive cable while car running. If it shuts off then it is the alternator.If it runs smoothly it is the battery. If it runs rough look at the voltage regulator or wire connector integrity.

Aug 15, 2011 | 2004 Lexus LS 430

2 Answers

My lexus E350 battery goes dead if car is not used for a week. Had the battery checked with dealer says it is OK


This has happened to me TWICE in the past 4 months. I had Lexus road side service come out both times to check the car out. Each time the battery was totally dead. The road side mechanic said that if the car is not driven at least 15 minutes nonstop a day, the battery runs dead as there are so many draws from the car on the battery. If you do alot of stop and start driving like I do, that isn't enough to recharge the cell of the battery, it must be non stop driving time. Recommend that I get a 1.5 tricky charge device an hook to battery at least one night a week to keep the battery charged. This is really frustrating with such a new car. I've spoken to other owners of other model luxury cars and no one has had this problem.

Sep 13, 2010 | 2007 Lexus ES 350

1 Answer

My battery loss charge


They probably had a series of batteries that were bad, and unfortunately, you got 2 of them. Take a credit (as it must still be under warranty) and get another one, or buy another brand. I don't think it has anything to do with your car.

Dec 09, 2009 | 1999 Lexus ES 300

1 Answer

I have a 98 Lexus LS400. While driving it, the car simply went dead losing all power, and will not crank again. What does this problem sound like


Have the battery and charging system check first. Sounds like the Alternator may have stoped charging and discharged the battery. Hope this helps. Please leave feed back.

Jul 30, 2009 | 1998 Lexus LS 400

1 Answer

, battery loses its charge, grinding noise


it sound like your alternater has gone bad. and your trany is bad you will have to replace it

Jun 11, 2009 | 2000 Hyundai Elantra

1 Answer

Battery discharging/lights pulsing


i would say that the regulateur on the altentor under pressure can not supply the charge. it might test good but it's not just have a shop replace your alternateur and that should solve your problem.hope this works for you .

Jan 05, 2009 | 1999 Lexus RX 300

1 Answer

Runs for awhile and then losses power!!


Man! Lexus is ****! I have the same problem.

Aug 14, 2008 | 1992 Lexus Ls 400

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