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Discussion Starter #22
So it doesn't start now?

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Nope. Around 6pm I took the underarm off to connect the cig lighter cable as it got disconnected.

Then I started charging my phone and had the radio on for around 10min and thats when I noticed the nav screen rebooting itself.

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Discussion Starter #26
Personally me .. new battery bud if you have had it a long time get a new battery jobs a gooden

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Thanks.

What order to disconnect/connect + - cable when fitting a new battery

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Discussion Starter #28
Is there a fuel switch that needs to be reset after changing the battery?


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12v proves nothing fella, only a proper battery diagnostic machine will tell you the health of a battery. Its most likely a duff battery, Aldi's and Lidls sell battery chargers for £13 and usually have them in, if you have one near you.
 

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Discussion Starter #31
Ok, called breakdown to give it an inspection.
They came round within 20mins and said battery is on its last legs.
Mechanic gave me a jumpstart and after few secs the car jumped to life.

Sitting in the car and testing the eelctrics all seems to be fine. No flashing icons or errors.

He said I'll need to keep it running for an hour, not sure for what reason?!

I've not turned the ignition off yet.

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Well when the engine is turned on and the alternator is spinning, it is charging the batter. He said leave it on for an hour due to the fact you end up taking more out of a battery than put back in when idling for say 10mins. So to be on the safe side leave it on for the given hour, and pop down to eurocarparts or something, give them your reg and they will get a compatible battery etc.
 

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Discussion Starter #33
So I let the engine run for 20min and periodically increased the rev from 500 to 1500 to increase the recharge (not sure if that makes a difference!).

In between I turned the engine off twice and when when turning it back on it started instantly.

I tested few of the electronics and noticed the driver side window does not auto drop when button pressed for a sec. I had to hold it down. The passenger side window works as expected.

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Discussion Starter #34
So I let the engine run for 20min and periodically increased the rev from 500 to 1500 to increase the recharge (not sure if that makes a difference!).

In between I turned the engine off twice and when when turning it back on it started instantly.

I tested few of the electronics and noticed the driver side window does not auto drop when button pressed for a sec. I had to hold it down. The passenger side window works as expected.

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Driver side window now auto drops.
 

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Have you managed to replace the battery? A good voltage doesn't mean the battery is good, if the battery has dropped voltage considerably then it will no longer hold a good charge.
 

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In case people can't understand batteries.... here's how to think of it....

If I get those tiny watch batteries, they're 1.5v... if I put 8 in a line, i get 12 volts.

This CANNOT start a car.... it's no the voltage

The MATHS formula is

watt=amp X volt

Watts = Power... higher watt light bulb, brighter light.

But to get that power, you need a certain current x volts. If the voltage is low, you would need MORE current to create enough WATTS, and it cannot draw more, so it won't start.

Similar, if you have lots of Volts, but current draw is low (like little button batteries) you cannot get enough WATTS, and cannot start that car....
 

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Discussion Starter #37

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In case people can't understand batteries.... here's how to think of it....
If I get those tiny watch batteries, they're 1.5v... if I put 8 in a line, i get 12 volts.
This CANNOT start a car.... it's no the voltage
The MATHS formula is
watt=amp X volt
Watts = Power... higher watt light bulb, brighter light.
But to get that power, you need a certain current x volts. If the voltage is low, you would need MORE current to create enough WATTS, and it cannot draw more, so it won't start
Similar, if you have lots of Volts, but current draw is low (like little button batteries) you cannot get enough WATTS, and cannot start that car....
I’ve had some battery problems. If I don’t drive for a little over a week, it needs to be jumpstarted. Is there a decent way to measure the charge in the battery?

I read on another website there is a chart that, on a rested battery, you can use the voltage to estimate how much charge is left. So 12.67 was 100% and 12.0 was 0% charge left. I take it that’s all wishful?
 
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