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post #1 of 9 (permalink) Old 01-20-2017, 05:46 AM Thread Starter
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i40 Flat battery

I have an i40 estate (business se nav bdrive crdi sa), which is 15 months old. 2 weeks ago, after not using the car for 2 days, It wouldn't start because the battery was flat. The RAC came out & started it but couldn't tell me why the flat battery had happened. I ran the car for the rest of the week, covering about 200miles, then left it on the drive for another 2 days unused. Again, the battery was flat after the weekend so I called the RAC again and this time they did further tests and said there was a 2.2amp drain in the battery when everything was turned off.
I have taken the car back to my Hyundai dealer and left it with them for 4 days to investigate. They have phoned me to say the battery needs fully charging in order for them to carry out tests and this will cost me 35!! I told them to charge it, but will be having a discussion about the cost of this when I pick the car up later. However, they say there is no discharge on the battery and the RAC are wrong, but they don't know why the battery went flat the first time. They say the battery went flat the second time because there wasn't enough charge after it went flat the first time!
I am amazed at what I've been told and the fee they want me to pay for charging my battery.
Has anyone come across this before? I would appreciate any info or feedback before I collect my car tomorrow morning.
Thank you in advance.
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post #2 of 9 (permalink) Old 01-20-2017, 07:37 AM
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Originally Posted by Dixon2805
They have phoned me to say the battery needs fully charging in order for them to carry out tests and this will cost me 35!!
I hate to say it but if 35 is your total bill for the dealer checking the charging system and checking for a current drain then it sounds fair to me. 35 probably doesn't even cover 1/2 hour labour at dealer rates. I know the car is under warranty but Hyundai don't pay the dealer for diagnosing faults. Hyundai only pay for the repair once a fault has been identified. There was no fault found in your case. And the RAC being wrong, in my experience, isn't beyond the realms of possibility.
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post #3 of 9 (permalink) Old 01-20-2017, 12:18 PM Thread Starter
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Thanks auto spark. However, any advice on why the battery went flat? Or do I just wait until it happens again? Car switched off, lights auto off, doors locked-I'm at a loss and a bit fed-up!
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post #4 of 9 (permalink) Old 01-20-2017, 04:01 PM
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If the battery and charging system are OK and there isn't any current drain then perhaps the flat battery was caused by the type of driving your doing. If your doing a lot of stop/start driving or regular short commutes to work in slow city traffic at this time of year with the headlights, heater, rear demist, etc on the alternator might not be able to fully replace the energy that starting the engine has removed from the battery. Everyday the battery state of charge will get lower and lower until one morning there isn't enough energy left in the battery to start the engine.
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post #5 of 9 (permalink) Old 05-04-2017, 03:12 AM
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Unhappy 65 pLAT I40 Saloon - Flat Battery

hi, my dad had the same problem over the bank holiday. Having been parked for 2 days, battery was flat, no ignition, no lights etc. My dad is not sure if he locked the car or not.

The AA man came and said there is a battery drain when car is switched off, that would make sense with car alarm fitted in modern cars, right?

Anyway car went back to the local Hyundai garage, they offered a replacement car straight away which was nice. Hyundai cannot find the fault. They advise the battery is working well and that they would run a full charge.

My dad being 75 has lost confidence, for him the reason remains unexplained and now worries if this will happen again.

Worst things is my dad drover from Northampton to Sheffield only the other day and then from Northampton to Milton Keynes on the M1. So its been doing sufficient mileage yet the battery drained.

Any help/advice will be great to allay his fears.
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post #6 of 9 (permalink) Old 06-07-2017, 02:41 PM Thread Starter
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Unfortunately I can't allay your dad's fears as I fear it's only a matter of time before it happens to me again. I now don't use the heated steering wheel, heated seats or even leave the lights switch on auto unless I'm doing a long journey.
To be told at the Hyundai garage that I should charge my battery once a week was an absolute joke. Never, ever, have I heard anything so unbelievable from any dealer in the past. I have told this story at other dealerships and they were amazed too. My car has been fine since I returned it to the garage and they fully charged the battery, but I fear a 'repeat performance' sometime in the future. It's sad really because I love the car, but my next purchase will not be Hyundai and I will certainly be asking about battery drainage!
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post #7 of 9 (permalink) Old 06-07-2017, 05:40 PM
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I fear a 'repeat performance' sometime in the future.
Yeah, probably next winter when you'll be using the headlamps and all those heating elements a lot more....see post #4.
That's not a problem specific to Hyundai. That's a problem specific to modern cars with all those convenience electrics.
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post #8 of 9 (permalink) Old 06-16-2017, 10:47 PM
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Hi,
As an Australian, we have (like you should have) a warranty on the vehicle that includes several other items like the full charging system .
My i40 should not have a worn / faulty battery unless I have left lights or other extras left on. If the battery went flat, and it would not charge, there is a lifespan / warranty on the battery of (usually) 2 + years, and you should be covered there, plus the Dealer should not be making you pay for checking any faults.
You can ask any friend if they have a Battery Charger that you can use, but be sure to remove the battery if you charge it overnight.
I checked mine, and the battery can be removed in a few minutes. If it will not stay charged, I would work on First a faulty battery, and next A fault in the charging system that should be fixed by your dealer for free (as the vehicle is only 18months old).


Just my opinion ...
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post #9 of 9 (permalink) Old 06-22-2017, 03:46 PM
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Dear members engaging in this thread, except autospark & noknojon, please fill in your profile, location, model, YEAR, trim etc for better response. Thank you
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