Volvo Owners Club Forum - View Single Post - C30 Electrics :

IainG · Aug 5th, 2020, 22:06

Hi
There do tend to be issues with alternators. I am on my 3 rd on my V50. A defective alternator can also cause a battery to fail. Your battery voltage with the car shut down seems a little low,
You checked the voltage with the engine running, was the voltage steady?
Worth checking tightness of connections and cleanliness of battery posts.
You could always put a meter on the interior light just to see if the voltage is fluctuating and by how much. Then try with the engine running to see the difference

Good luck

Iain

Aug 5th, 2020, 22:06	#7
IainG Premier Member Last Online: Yesterday 15:42 Join Date: Apr 2013 Location: Plymouth	Hi There do tend to be issues with alternators. I am on my 3 rd on my V50. A defective alternator can also cause a battery to fail. Your battery voltage with the car shut down seems a little low, You checked the voltage with the engine running, was the voltage steady? Worth checking tightness of connections and cleanliness of battery posts. You could always put a meter on the interior light just to see if the voltage is fluctuating and by how much. Then try with the engine running to see the difference Good luck Iain Last edited by IainG; Aug 5th, 2020 at 22:11.