flat battery

[puggy1958]

Any advice would be appreciated guys,today if possible.
Returned from holidays yesterday and i was looking forward to getting the car out for a blast only to discover the dreaded flat battery,fortunataly the roof was left off so i could get in to push the car out of the garage,i tried to start him from my wifes car without success ,in fact it wouldn't even turn over.I have a couple of questions as follows.
1.Do i try to bump start (risking being stranded at the end of the hill outside my house?
2.Remove the battery and charge up?(What about the immobiliser)
3.Use a booster pack?
Look forward to some assistance.

[sapper]

Ive had the same and managed to jump start from another car so you should be able to. Try the boost before being stuck at the bottom of the hill, what about AA/RAC etc?

[puggy1958]

I havent signed up to the RAC etc yet ,maybe its a good idea,in fact its going to happen in the next day or so.I tried several times to jump start from the wifes car but nothing,the immobiliser is disarmed and i hear the pump prime but no turn over ,i know it sounds like the starter motor but my wifes car is new and the battery is beefy enough(SLK)

[sapper]

have you tried giving the starter motor a tap just in case it is stuck. You can get a Jack handle or something similar down past the manifold on the drivers side. Give it a knock as you try to turn it over, hope this helps. Good luck

[puggy1958]

Thanks mate i'll try it after brekky

[Paulgooner]

dont know whether this will help, but I think that if you have a total flat battery, the alarm/immobiliser may not work. I believe you need to disconnect the negative terminal ( once battery is charged) and leave for a min. before reconnecting.

[DHUDD]

Try the relay in the passenger foot well, there are 2 5 pin relays in mine, there is a silver one and a black one. Its the black one you need, There are 2 white and orange wire's going into terminal 87a(the middle one) this wire was causing a short in mine. resulting in wiping the battery out.

[Zumbruk]

Chances are the battery is "just" flat.

Disconnect it, recharge, reconnect, reset the alarm and drive to the nearest battery supplier for a new one; they are never the same once they've been completely flattened.

Then buy a battery conditioner.

[bsdnazz]

Zumbruk said:

Chances are the battery is "just" flat.

Then buy a battery conditioner.

I second this.

I assume the car is garaged as the OP says the top was off so leaving it on a battery conditioner should be easy.