jshodgson
Active Member
For the first time ever I got a red warning light (battery symbol only- no words) when I got back to my car after work. It started and ran fine.
Next day I did a 160 journey and again the warning came on as soon as I started, went off and kept on reappearing throughout the journey. When I got home I checked the battery voltage and it said 12.0v.
Next day I checked the voltage and it was 11.5v.
Car started fine and ran normal, again with the warning appearing now and again so I drove it with the battery voltage displayed and as soon as I started the engine it went up to 14v, when I stopped the engine 12v. I then charged the battery for 3 hours and got the same reading (12v and then on start up 14v and then when the engine is off 12v).
I checked for a second battery in the engine bay but couldn't find one so I think I just have the massive one in the boot.
Could it be a failing battery? Alternator (although it looks like it is charging when I am driving) or could it be something else?
Next day I did a 160 journey and again the warning came on as soon as I started, went off and kept on reappearing throughout the journey. When I got home I checked the battery voltage and it said 12.0v.
Next day I checked the voltage and it was 11.5v.
Car started fine and ran normal, again with the warning appearing now and again so I drove it with the battery voltage displayed and as soon as I started the engine it went up to 14v, when I stopped the engine 12v. I then charged the battery for 3 hours and got the same reading (12v and then on start up 14v and then when the engine is off 12v).
I checked for a second battery in the engine bay but couldn't find one so I think I just have the massive one in the boot.
Could it be a failing battery? Alternator (although it looks like it is charging when I am driving) or could it be something else?