RichL
New member
- Location
- San Rafael CA, USA
My 2015 GTI SE PP 6MT with under 17k on the clock has been getting harder and harder to start for about a month. I kept checking the battery regularly and it read a touch over 12v every time. Today, I drove home from work and parked. I checked the battery tonight and it read just over 11v, so I tried to start it and ...it was dead
. I ran Ross-Tech Vagcom/VCDS on my laptop and all kinds of faults showed up that I know aren't correct. I started to think that it was the fuel pump control module, as I've seen them die, but it didn't show up as bad.
I waited a couple of hours and the battery read over 12v again. I tried to start the car and it turned right over. My other car, a 2003 Honda S2000, eats batteries every year or so, so this isn't my first hayride, but I was reading that I may have to recode the battery info through VAGCOM or my car might not charge correctly.
My questions:
1) What is the correct physical battery size in a 2015 GTI? Looks like a 47 or 48 to me (BCI H5 or H6?), but I can't be certain.
2) Can I just buy a good quality replacement battery and do the install, then code it if necessary? This is my first car with so many electronics, so I need a simple answer, if possible. I don't care if I lose radio station presets, but I read that other settings might get erased as well if I don't have a way to keep 12v somehow connected during the battery swap.
3) Any non-OEM suggestions for batteries that work/fit? Maybe OEM batteries will only last 3 years in a GTI, but I'd like one that might live a few more years.
I'd like to preserve the OEM battery cover (it's where my Neuspeed Power Module hides), so I don't want to go with a battery with a different footprint than stock. Thanks for the help.
I waited a couple of hours and the battery read over 12v again. I tried to start the car and it turned right over. My other car, a 2003 Honda S2000, eats batteries every year or so, so this isn't my first hayride, but I was reading that I may have to recode the battery info through VAGCOM or my car might not charge correctly.
My questions:
1) What is the correct physical battery size in a 2015 GTI? Looks like a 47 or 48 to me (BCI H5 or H6?), but I can't be certain.
2) Can I just buy a good quality replacement battery and do the install, then code it if necessary? This is my first car with so many electronics, so I need a simple answer, if possible. I don't care if I lose radio station presets, but I read that other settings might get erased as well if I don't have a way to keep 12v somehow connected during the battery swap.
3) Any non-OEM suggestions for batteries that work/fit? Maybe OEM batteries will only last 3 years in a GTI, but I'd like one that might live a few more years.
I'd like to preserve the OEM battery cover (it's where my Neuspeed Power Module hides), so I don't want to go with a battery with a different footprint than stock. Thanks for the help.