Quote:
Originally Posted by macafee2
Having spoken to the dealer they have said the same as you, it is parameters set in the ECU that will stop the car shutting down yet still able to start normally.
thank you for the advice
macafee2
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Exactly that-the ECU will look at the state of the battery (and ignore the voltage from the alternator, which will probably be a smart charge one and therefore the voltage from this will be variable anyway) and disable the stop start unless all of the “checklist is ticked.
If it’s a dealer replacement the battery will most probably be correct for the car as they’ll pick the one listed on the EPC but if you source one yourself check it’s the correct Enhanced Cyclic Mat or Absorbent Glass Mat battery for the car-also check it doesn’t need programming in using diagnostic software (quite a few do now, which is an absolute pain!). Most motor factors can source these quite happily now.
Might be worth giving it a go on the aforementioned battery conditioner before replacing though to see if this helps-if the car is subjected to regular short journeys (which it sounds like it is?) this won’t be helping it.
Modern car tech is amazing when it works but an utter pain when it causes issues!