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Car Won't Start! Battery Drain Problem?


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#1 Welshrabbit

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Posted 19 March 2012 - 10:39 PM

Hoping for some help! We have a IS220D, 2006. It appears that our battery won't hold it's charge. We have bought a new one hoping that would solve the issue but it hasn't. We can use the car today then go to do the school run tomorrow and it's dead! Jump start it then it's fine for a few days then it happens again! We have ruled out the battery and believe that there is not a problem with the charging. People that we have spoken to with more knowledge than me, are possibly suggesting that we have something draining the battery overnight. Is anyone aware of what our problem could be or aware of a common issue that puts a drain on the battery when not in use as it does not matter how much we use the car, it rarely starts after being idle for two days, sometimes less. I am very grateful of your help.

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#2 Crowy Tan

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Posted 20 March 2012 - 01:56 AM

i have same issue on my 1996 gs300 sport

#3 BenIS

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Posted 21 March 2012 - 11:55 PM

Sounds to me like there are two factors here. Either the altenator isnt charging the battery like it should ( I know you mentioned this already but best check anyway. Try and find someone with a multimeter) or like you said something is draining the battery overnight. Again find someone with a multimeter to see what happens when you lock the car as you would at night, see how much current is being drawn. Is the car standard or does it have an aftermarket alarm fitted for example?
Im not an auto electrician but i am an electrician and this is what i would check first.
Hope this helps.
sorry if not.

Ill carry on thinking ;)

Somebody on here will know though

#4 Trav5149

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Posted 24 March 2012 - 09:54 AM

Hi,
Same problem on my LS - due to it only getting used 3 days a week, it doesn't get time to charge. I've been advised to try a solar trickle panel that connects into the cig lighter - £25 on ebay - I haven't tried it yet though..........

#5 autumnbabe

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Posted 05 May 2012 - 03:29 PM

Hello welshrabbit i had a similar problem on my 2006 220 IS in april this year, new battery fitted in October 2011, couldnt figure out problem then an auto mechanic had a look and low and behold it was a screw on the battery shorting the earth wire. Check this it might be this. I was shocked something as simple as a screw touching the batteries earth wire would completely deaden the battery.

#6 LQA

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Posted 24 February 2013 - 09:59 AM

Sorry to necro an old thread. I have a IS220d (2006) and I am also suffering the 'random' dead battery. The battery is less than a year old. The RAC came out and it appears both battery and alternator are functioning as should. He did measure the current being drawn when 'off' and it was pulling .8 amps, he ventured that it should be nearer .5 amps. However I am no nearer establishing the cause. The only 'after market' add-on is a towbar with single socket for a trailer. There is an inline fuse visble running behind the battery that RAC bloke says is non-standard, who am I to argue?

Will removing the fuse assist - if the problem exists there?

Any help appreciated - I'll check the screw issue above too.

Mick

#7 normski2

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Posted 26 February 2013 - 09:47 PM

Have heard of a couple of cases where the earth connection to the car body has worked loose. May be your problem...worth checking.

#8 ROYT

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Posted 27 February 2013 - 12:14 PM

Also look for something stuck on, like the boot light.......

#9 normski2

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Posted 27 February 2013 - 03:44 PM

Ooh good shout!!
Or the Glove box light?

#10 LQA

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Posted 01 March 2013 - 08:33 AM

I will check the earth connections. i have previously turned off boot lights. Glove box lights; not tried that. I would expect a flat battery every morning if it was a light permanently on though.

 

I have read, but not yet tried, inserting a bulb between battery and earth and pulling fuses one by one.



#11 kopondriver

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Posted 19 November 2013 - 10:26 AM

I have the same kind of trouble and also no solution. Changed the battery 2 years ago because it was losing charge overnight. Had it tested but both battery and alternator were fine, isolated the battery overnight and next morning it started fine. Then got fed up disconnecting and changed the battery which has worked ok for 2 years. Now the same trouble again - is it the colder weather? This time however the car is also taking longer to fire up even when jump starting from another battery. Changed the heater plugs a few weeks ago but no different. Isolating the battery overnight again but this morning it turned about a dozen times without starting and then the battery died. Going to buy a new battery today -  this one only had 1 year warranty. But still think something is draining the charge overnight. Maybe when the battery is new and strong the overnight drain has little effect and then as the battery gets older and weaker the drain has a greater effect? The longer cranking time is maybe a separate issue - maybe losing diesel supply when parked overnight? Hard to get anyone to sort these cold start problems because once it starts then its fine for the rest of the day so I can't show a mechanic whats happening. Just putting this on the forum hoping it may ring true with someone else.



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