Battery Drain

[KENWOOD]

On 3/27/2013 at 8:58 PM, jeffreyt said:

I thought the Battery drain was a fact of life with this model.10 days is about the max I can leave mine standing and still start it without a jump.

I think I will get it checked anyway.;

I have a 2001 and it was fine for 3 years. Then the alarm kept going off at 05:00 in the morning.

I traced it down to a flat Battery, not flat enough to not sound the alarm!!!

It had a new Battery and was ok for a while, then I the alarm would go off again early in the morning.

I measured the static current drawn which was 1Amp!!!! 

I intend to measure the current drawn and remove every fuse one at a time to see if I can find the circuit drawing the current.

I will reply with my findings!! Regards Ken

[Bob King]

The Battery back up batteries in the alarm can corrode and go bad in older Lexus models ☹️

[BanditPaul]

Mine had the same problem, flat Battery after a couple of weeks.

I suspected it was the boot lid that was not closed properly, so changed the bulbs to LED's just in case it happens again.

Also checked the Battery current when the car is locked, it eventually drops down to 80mA if everything is off.

So it you have a 60Ah Battery it will be flat in about 30 days, but I would start the car after two weeks just be sure.

Hope this helps.