alternator killing battery

[Highlander1314]

hi folks
have had a 23 plate a110 for a week over 1 year from main dealer and had to call out the RAC today because it would not start, problem identified as alternator sending over 15v to battery and basically frying the battery. now I understood this was an "old issue" that had been fixed 2 yeas prior to 23 but apparently not in my case, do I have any ground to push dealer to fix alternator and replace battery?

[LE62NDE]

So you are just out of warranty? Alternators were a problem, but never got a formal recall; Alpine seemed to address each claim as it arose. So whilst you perhaps can't demand a replacement, you could reasonably ask for one as a goodwill gesture.

[Highlander1314]

thanks, guess I need to try that. will update once I speak to them today.

[STSCH]

Had an issue with the alternator, just at the end of my warranty but was assured that it was equivalent of a recall. A failed alternator would be replaced FOC,

[7en]

Send me your VIN and mileage, some alternators are covered out of warranty, I'll check for you.

[Highlander1314]

ty but spoke to Arnold Clark in Glasgow yesterday (I live north of Inverness so getting to an alpine dealer to get it physically checked would not be possible) and their tech team suggest the issue is a failed battery not the alt given the reading when the RAC came out was just over 15v when car was running which is below the 16v they say is the safe limit. Going to get a new battery fitted tomorrow and will update how that goes.

[Rompy]

When replacing the battery, you will need to get the car software coded. Otherwise the alternator will continue to push extra voltage into the new battery and damage it. Not saying that there isn’t an underlaying problem with the alternator, but new batteries should be coded to the car. Luckily my Alpine dealer did this FOC a few years ago after I fitted a Tayna replacement myself. You’may be giving Alpine a way out of warranty work if you rock up with a new battery fitted and the car not coded for it.

[Naturally_aspirated]

Surely if you replace the battery with a like for like EFB it doesn’t need any coding. The car detects the SOC over time and will adjust.

If you’re installing an AGM battery yes it will need coding as the charge logic is different.

[Highlander1314]

@rompy. the suggestion to change the battery has came from alpine AC in Glasgow so my by my simple logic when fitting another genuine part if the alt kills this one I would be stressing they owe another battery when repairing/replacing the alt........he says hopefully lol

[matt5964]

Alpine told me the A110 does not need coding when the battery is replaced

[Highlander1314]

matt5964 said:

Alpine told me the A110 does not need coding when the battery is replaced

interesting, did you change to OEM or an alternate brand?

[matt5964]

Highlander1314 said:

interesting, did you change to OEM or an alternate brand?

Have had a Bosch S5 agm in science August last year, no problems with holding charge at all.
Optimate says condition is good.