Start/Stop - Low voltage or Battery temp

[carlosabh71]

Just replace starter battery, same problem on my 2017 S60 Cross Country, solves replacing battery with. 1000amp H7 champion battery bought at Pepboys for $120 with a
Coupon , Start stop instantly become available .

[XC60aches]

Thanks temp... I’m under your same assumption of the starter battery.. but I’m trying to prove it’s the battery. It’s under warranty. It is a 3 year platinum battery that is 15 months old. It seems to check good at the store (on and removed). But I think I am going to try a different store.

[XC60aches]

Update:

Unconfirmed but looks like this may be a product of Technical Journal ref# TJ30268.5.0 thermostat. I put OBD2 on it, had a pending P0579 thermostat heater open or short. Cleared it, it returned after few starts but has never been a confirmed error to pop the check engine light. I have most of the symptoms recognized in the TSB. However, runs great..