Thread: Discovery 2a - Will disconnecting the battery harm the computer in any way?

why buy a new battery?
change up the current one.
more than likely its discharged not kaput.

Will need the security code for the radio.
Keys won't need to be re-programmed as far as I know. I've disconnected mine multiple times and no adverse effects in regards to the keys or ECU.

I would just try to charge the battery before buying a completely new one. Use a charger that has a reconditioning mode of some sort, my ctek has one I use to keep the batteries in shape.

At the very least get it tested by someone to see what the issue is. There might me a parasitic drain or charging problems which the test should be able to tell you.

Hi woody as above re: possible parasitic drain , radio code if original ,but tell your wife she might want to have the key handy as when she connects the new battery the alarm could go off so get ready to press the unlock button on the fob,

Cheers

I've replaced two batts,, one D2, one D2a neither time the horn beeped

Thanks for the help guys.

I'll pass this on to my better half.

The plan is that she'll try recharging the old battery and get a new one if it doesn't hold a charge.

It's not the original radio, so hopefully no worries on that front.

Originally Posted by Pedro_The_Swift

I've replaced two batts,, one D2, one D2a neither time the horn peeped

But have either of them been so flat that they didn't light the dash lights? It'll depend on the state of the alarm / voltage , I didn't say it would , just that it could.

Hi Andy,
If you go away in future put a CTek charger on the battery via a quick connect coupling. Keeps the battery charged and depending on how long you are away after I think it is 14 days the CTEk goes into a cycling mode to keep the battery active.

Cheers Marty.

There is no issue with disconnecting and reconnecting the battery. You'll lose the distance on the trip meter and have to put in the radio code if original radio or frequencies / time into clock. No special start sequence or anything else required.