Hi, I've a Nov 2016 Octavia 1.4 tsi. Purchased in the Bristol UK and brought home to Dublin. I purchased the car in Feb 2020, just before the madness of Covid!

 

All was good for a while, I changed the interior lights for LEDs and got a stop start error. A friend of mine has an OBD so he clear the fault and all was ok again.

 

Happened again while cleaning the interior with the radio on, pointing to the battery. I tested the battery and it wasn't good. I replaced it with the new type with higher amps. All ok again.

 

2 days ok I was sitting in the car with the keys in the ignition turned once to have the radio on while sending a few texts. Started the car and off I went. Less than 10 mins later I get a warning stop start error.

 

So this morning I tested the new battery. First I brought it on a 30 min spin. Put the battery tester on, "fully charged". I put the radio on and the lights, "half charge" within 15 seconds. Put the heater on and straight away, "low battery".

 

I tested the alternator and it says charging on maximum.

 

Anyone got any ideas on what's going on? Surely a battery should hold charge for more than a couple of minutes. Is the new battery a dud?

 

Thanks for reading.

Did you recode when changing the battery?  You need to tell the car it has a new one or it will charge the brand new battery thinking its the smaller capacity, worn battery that was on it before.  

When you say recode? Sorry completely new to skoda! I cleared the fault with the OBD, that's all.

You need to recode with OBDelleven/vcds so the car knows it has a new unit onboard.  Google it or search on here for the procedure.  Should be very similar for most modern VAG cars.

 

Clearing the fault is not enough.

Great thanks Mark. I'll look it up.

So I changed the battery adaptation in OBD, so hopefully that sorts it. I'll keep you posted.