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Hello, I have a Venga 16 reg plate.
A couple times now I have had problems unlocking the car, maybe coincidence but both times on rainy days.
The only way into the car is to use the physical key to open the doors - obviously the alarm goes off for the 30 seconds.
This time I couldn't start the engine, no ignition, just the orange shaped car with a key in it showing on the dash.
I phoned Kia and they told me I had a flat battery and to phone the AA, I knew the battery wasn't flat.
After the phone call to Kia, I tried to start the car again and it started, no problem at all.
But what is happening with the key? After the first occasion I changed the battery in the key.
Is it something to do with the rain/moisture, obviously when it happens it is a worry, first time was up on the Moors the 2nd time on the coast.
Anyone else had this problem or any solutions, thanks.
 

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Hello, I have a Venga 16 reg plate.
A couple times now I have had problems unlocking the car, maybe coincidence but both times on rainy days.
The only way into the car is to use the physical key to open the doors - obviously the alarm goes off for the 30 seconds.
This time I couldn't start the engine, no ignition, just the orange shaped car with a key in it showing on the dash.
I phoned Kia and they told me I had a flat battery and to phone the AA, I knew the battery wasn't flat.
After the phone call to Kia, I tried to start the car again and it started, no problem at all.
But what is happening with the key? After the first occasion I changed the battery in the key.
Is it something to do with the rain/moisture, obviously when it happens it is a worry, first time was up on the Moors the 2nd time on the coast.
Anyone else had this problem or any solutions, thanks.
If this is a keyless entry, push button start/stop vehicle, then it sounds like a flat battery in the keyfob. It is a CR 2032 or equivalent. The Duaracell versions I bought have a very long shelf life. (buyabattery.co.uk) If not a keyless entry vehicle then I do not know which battery is needed. But either way it still sounds like the keyfob battery to me.
The (keyless entry) keyfob is opened by using/twisting the metal key in the center slot revealed when you pull the metal key out. Take note which way up the battery goes in. It slides out fairly easliy. But putting the two halves of the casing back together takes some patience, hooking bottom end in first, then applied ignorance.
 
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Discussion Starter #3
If this is a keyless entry, push button start/stop vehicle, then it sounds like a flat battery in the keyfob. It is a CR 2032 or equivalent. The Duaracell versions I bought have a very long shelf life. (buyabattery.co.uk) If not a keyless entry vehicle then I do not know which battery is needed. But either way it still sounds like the keyfob battery to me.
The (keyless entry) keyfob is opened by using/twisting the metal key in the center slot revealed when you pull the metal key out. Take note which way up the battery goes in. It slides out fairly easliy. But putting the two halves of the casing back together takes some patience, hooking bottom end in first, then applied ignorance.
Thank you
 

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I have had a similar issue with my 2016 Venga 4 CRDI. The car did not respond to a key fob or door buttons. Had to unlock it with the key. Then yesterday the car wouldn't lock with key fob or door buttons, I even tried the spare key fob. I think it could be an immobiliser issue as yesterday, when it wouldn't lock I sat in the car and it wouldn't start, just the start button illuminated. No lights on the dash. Then after holding the unlock button on the key fob for about 10 secs I got a click from the doors and all was fine again. I had a new battery in January as the car had stood for some weeks and was completely dead, took 5 hours at 8 amps to just get enough in the battery to crank the engine. I am waiting for the Kia dealer to contact me, I'll post the outcome.
 

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Still waiting for the call from the dealer. Yesterday I thought it could be the key fob battery, so I opened the fob took the battery out and put a meter across it 3.1v. Tested a fresh CR2032 3.26v, so the battery should have been ok. Put in the fresh battery anyway and the car wouldn't open. Tried the spare and nothing, so I tested the battery on the spare key fob 2.6v. It's something to remember the battery in both key fobs runs down whether or not it's being used. Put the meter across the battery in the car 12.6v. A fully charged lead-acid battery should read 13.2v, however, this is a battery designed for stop-start use, what should the fully charged state be? Connected my charger and the voltage went up to 12.8v in an hour. Disconnected the charger and closed the bonnet and bingo both key fobs worked. There is definitely something no quite right. I had a Hyundai Accent in 2000 and when I sold it in 2006 it was on its third alarm/immobiliser, all changed under warranty. The car would lock and unlock the doors as you drive along. My son-in-law also had an Accent on a 53 plate. When it was 12 years old the immobiliser just stopped responding, the car was scrapped as it cost more to have it fixed than it was worth.
 

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All lead acid batteries use the same chemistry so fully charged is 13.2V regardless. Your engine battery is still in a poor state of charge and it has recently been deeply discharged which does them no good at all. I suggest a good long trickle charge, but it is 4 ish years old and has been abused by it's recent experiences so it might now be toast. A battery specialist can test it for you but be prepared to replace it.

The keyfob batteries use a different chenistry and these are nominally 3.0V and considered dead at 2.7 V.
 

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All lead-acid batteries use the same chemistry so fully charged is 13.2V regardless. Your engine battery is still in a poor state of charge and it has recently been deeply discharged which does them no good at all. I suggest a good long trickle charge, but it is 4 ish years old and has been abused by it's recent experiences so it might now be toast. A battery specialist can test it for you but be prepared to replace it.

The keyfob batteries use different chemistry and these are nominally 3.0V and considered dead at 2.7 V.
My battery was changed in January, as the original had been deeply discharged. In my experience once a battery has been deeply discharged it needs replacing. Jel batteries are the worst, I used them a lot in my work and systems used to switch off before the battery was completely exhausted to save the battery.
 
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