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Discussion Starter #1
Hi pls can someone help I had my SatNav update by Kia Coventry everything was fine for the first week and than after my battery went flat so I charged it lift the the car for a few day went to start the car the battery was Flat book the car back in to Kia and they have advised me the ISG / LDU part number 953103U000 is the part that is making my Battery flat is this right information they have gave me pls help
 

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Hi & Welcome.
I have moved to Sportage section. But it would help if we had some more info on the car.

Age, mileage, engine etc.
 

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Discussion Starter #3 (Edited)
Hi thank u for welcoming me as I am new to forms
My Kia Sportage 3 this is a 2012 (62)
1.7 diesel
44k on the clock
Had the battery and alternate check they are both very good
I have been told by Kia that it is the ISG / LDU Control module which sits on top of the amplifier in the boot of the car as they have disconnected this I do not have no sound in the car when I connect the isg I have sound could this part be draining my battery. All this as started after a software update at Kia before that the car was fine.
 

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Hi The part number you quoted is for a 200Watt DC converter for the external amplifier. If this part is faulty and is draining the battery then the ISG on your car will not function at all - or at best intermittently. I have not come across this fault before so well done for the mechanics in identifying it. Sounds like a warranty claim to me. Let the forum know how you get on.
 

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Discussion Starter #5
Hi thank u for that I info I have got a 2nd part and it still doing the same thing draining the battery and the deals want £200 for the part and another 210 to fix it as the car out of warranty now is there any other way around this issue
 

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Have you checked the voltage at the battery with engine off & running?

I would also look at changing the battery. If it has gone totally flat, then it may have been damaged.
 

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Discussion Starter #7
Hi guys I have had the battery checked every time it go flat and after I have changed it and it also come back good.

also I have bought two secondhand parts and every time I have connect them and checked on a Multimeter The reading are around 200.2/ 300.2 M/A and when I disconnect the LDU unit the voltage drop to 003.0 M/A surely this part can not be Faulty As I have tired 2 other one could it be a relay if so pls can u tell me where it locate or any other clues what it could thank u for your help and Happy New year guys
 

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Discussion Starter #8
Also all the issues have started after I had my satnav updated at Kia Coventry.
Could the SavNav / Radio be draining my battery?
 

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Hi guys I have had the battery checked every time it go flat and after I have changed it and it also come back good.
Checked by who?

Might be worth having a look at the below.

 

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Discussion Starter #10
Hi they both been check my a independent garage they specialise in alternators and batteries and starter motors they have advised me there a drain but very time I disconnect the ISG / LDU the battery will be ok but when I leave the ISG / LDU by the next day the battery is flat would u think the relay is staying alive? Or could it be my satnav update that was done at Kia.
 

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Or could it be my satnav update that was done at Kia.
If they think it's the relay then that would be a cheap swap out & very easy to test. Find output. Turn everything off, and watch via multimeter. Might take a few mins as power can take a while to fully turn off.

If it was the sat nav update then we would be seeing a lot of posts on the issue. I think that is just a coincidence.
 

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Discussion Starter #13
Hi guys I put a new relay in and still the same so I got a new part from Kia and fitted in and it still keep draining the battery so it not the ISG / LDU as this was the part Kia said that was draining the battery do u think Kia will give me my £195.00 back as this is not the part let see
 

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i’m afraid it’s not a warranty part
What exactly puts it outside the warranty? It's certainly not a service item nor a part normally subject to wear and tear.

Have you actually done a complete parasitic drain test? It's usually easy to find the fuse circuit that is consuming excess current, then often a little fiddlier to disconnect the individual sub-circuits one-by-one until the problem is obvious.

I don't see how the problem was ever going to be a relay, but was it an amplifier that you've tried changing? I don't understand the references to blaming the ISG system, other than it will become inactive if the battery state-of-charge is below the required threshold.
 

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Discussion Starter #17
Hi yes and the problem is that if I disconnect the ISG the voltage drop and when the isg is Connected the voltage stay very high the car been to the dealer and they advised me it the ISG/LDU unit which cost about £200.00 on exchange and they wanted another £210.00 to fit it so I got the part and fitted it my slef but still have the same problem so I do not know what it is now all the problem have started after a sat Nav update from the dealer
 

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@Zebster.

Hs car is a 2012, so out of warranty.

I'd still be tempted to think this is a relay stuck open somewhere.
 

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Oh yeah, this whole thread is the wrong section. Could well be a common problem in the right company?

A relay sticking open won't cause a drain... One sticking closed might!
 
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