Battery questions

Just thought I'd pop a comment in here - My Sons D3 had many and varied faults coming up including handbrake, transmission, HDC, Suspension, etc. Engine was slow to crank so we dropped in a new battery. The difference was amazing - not only have all those faults cleared, but the rear parking sensors didn't work when he bought it and now they've come back to life as well. Can't believe how upset they get with a battery that is on the way out. If the current battery is more than 5 years old I'd highly recommend stuffing a new battery in it. [smilebigeye]

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Originally Posted by Homestar

J Can't believe how upset they get with a battery that is on the way out.

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I can. They got into the sulking habit by listening to their older brothers, and upped the ante.

Quote:

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Originally Posted by Homestar

Just thought I'd pop a comment in here - My Sons D3 had many and varied faults coming up including handbrake, transmission, HDC, Suspension, etc. Engine was slow to crank so we dropped in a new battery. The difference was amazing - not only have all those faults cleared, but the rear parking sensors didn't work when he bought it and now they've come back to life as well. Can't believe how upset they get with a battery that is on the way out. If the current battery is more than 5 years old I'd highly recommend stuffing a new battery in it. [smilebigeye]

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Hi Gav,
The battery is a year old.
But I'm getting faults that suggest a weak battery.
I've followed Tim/Drivesafe's suggestion of charging it daily for a week.
I then hooked up the multi meter, closed the bonnet, double lock it, and next morning watched the voltage as the car was opened and started, it got down to 10.somthing volts as it was cranking, it started fine but then came up with a gearbox fault and restricted performance.

What sort if volts would you expect to see while cranking?

Tony