Jump Starting With Flat Battery

[diseselbob]

Hi all,

Hope someone can advise me on this one. An uncle of mine passed away last October, and he has a 54 plate IS200 in his garage. I took it out for a run a couple of months ago with no problems. Last weekend I planned to take it out and give it a run prior to selling it, but the Battery was flat as a pancake. I tried the following:

1). Charging the Battery in situ but every time I switched the charger on the alarm went off.

2). Tried jump starting it from my own car, but when I connected the two batteries, the alarm again went off, I turned the ignition on and the dash lit up but the starter would not engage - looked to me like the immobiliser was being activated for some reason.

Has anyone any suggestions, or can they explain why I couldn't jump start it? I think my next move may be to disconnect the Battery, charge it, reconnect it and start it - I've read that the alarm will activate but should go off after 20 seconds.

Cheers,

Bob.

--

[adrian71]

remove the Battery and charge it, when you re-connect the alarm will go off so use the key fob to lock the car and reset the alarm :)

Disclaimer: I havent done this to my IS200, but same prob on gf's toyota rav which had been stood for a while lol

[sparkystav]

I was always told never to directly jump the Battery.

Always connect to the live and then to the chassis for the earth.

But yeah why not just pull the wires off the Battery and charge it?

Stav

[loggyboy]

Connect the jump leads, leave the 'donor' car running for a few mins to give some life to the dead Battery.

After as few mins lock and unlock the IS, then try it.

[Rikos]

sparkystav - why connect the black cable to the chasis. According to the directions on jump cables they should be connected to the 2 terminals on the Battery. Red + and Black -

[sparkystav]

Not sure really, just the way i was taught.

See here: Click

The only reason i can find on the net is so that you dont create a spark near the Battery as its the final cable you connect and so creates the circuit.

Stav

[Rikos]

I never knew that .... but then again theres not alot i do know as i've found being on here

[kev dood]

yeah, all the manuals say connect the ground to chassis or similar. Cannot remember why though.

I didn't think it was a good idea to jump the IS - cannot remember if manual mentions it or not, but something like it can spark when connecting other Battery up and fry the ECU??

[diseselbob]

The IS manual tells you how to jump start it, and it says connect the black lead to a suitable bodywork earth point under the bonnet, not the -ve terminal, which is what I did. However my jump lead box says connect it to the -ve terminal! I seem to remember someone telling me way back that you shouldn't connect the black to the recipient -ve terminal because if the Battery is dead, as opposed to just discharged, you could damage the donor Battery. I always clip it to a bodywork earth point, and it usually works (except in this case!).

Bob

--