Thread: Car won't start!

The battery is 6 years older than it was when the vehicle was purchased. How did you conclude that it was a perfectly healthy battery, especially considering that another battery is fitted that may have been masking the condition of the starting battery?

Originally Posted by Bohica

My son, drove the car to work. 5 hours later all electrics are dead. Door unlocks by putting the key in. The car will not start. Headlights do not go on. The battery came with the car, bought, in Sept 2015. The car has an auxiliary battery and a battery isolater. I will go to the car tomorrow with jumper leads. Hopefully that will get it started. It does seem odd that a perfectly healthy battery would go belly up in a matter of hours.
Any ideas?

I read somewhere on the forum that the ECM doesn’t wake up if the detected battery voltage is below a certain level (ie somewhere down around 10V from memory) check your battery connections and earths for starters - oops the pun was accidentalbut i left it in

I’ve seen a battery go from functional to fault in 2 minutes.

I conclude that the battery is healthy as it has had a good voltage. Interesting about the aux masking it. Well, a new battery is an easy fix for this.

Batteries can fail very quickly in cold weather

I'm from England. It's not cold here. I'm still in shorts and a tee shirt!
I do remember the aux batt with a low voltage a few months ago, even after a good drive.
Now to find a battery.

Originally Posted by Bohica

I'm from England. It's not cold here. I'm still in shorts and a tee shirt!
I do remember the aux batt with a low voltage a few months ago, even after a good drive.
Now to find a battery.

No brain, no pain.
No sense, no feeling.

I went to remove the positive terminal. It was loose. I tightened it up, the car started. I could not lock or unlock the car. The the car would not start. I pit in the new battery same story. Tightened up the positive terminal and twisted it to get a good grip and could lock, unlock and start the car. Can the terminal be fixed? The old battery will go on the charger/recondition box, see how that goes.