Alarm Keeps Going Off!

[Pip]

Just been woken up by the car alarm going off. :tsktsk: I get to it and this happened yesterday too and it wont unlock by the remote in the key. Battery in the key is fine.

Open it manually and the Battery seems to be dead, no tick over nothing. The lights on the dash were so dim you could hardly see them. Couldnt get the alarm to shut off either. read in the manual that it has its own seperate power supply just in case.

I got jump started yesterday and it was fine until stood for a while and with the weather we are having are not really doing it favours. It seems that the Battery isnt holding its charge for long.

Can anyone confirm this with the alarm going off because of low Battery?

Cant even lock the car now

Got CCTV running not that anyone will go near it but thats not the point.

Have i got a goosed Battery?

[Rob]

the alarm going off isnt normaly a sign of a dead or knackered Battery, but if there is no turn over and lights are dead then prob the colder weather was just enough to kill the Battery if it was on the way out anyway

[Pip]

Thank you sir.

[Mr Morse]

Actually I found from experience that a dead or dying Battery can play havoc with an alarm/immobilizer - it recently happened on my Tubby and the dead Battery set all the relays clicking like billy-o. Was cured soon as I replaced the Battery.

[nicnac]

Yes you have.... :)

[Rob]

when u replace the Battery if u hear a beep beep sound from the rear dont worry it is the backup Battery of the alarm

[Pip]

Actually I found from experience that a dead or dying battery can play havoc with an alarm/immobilizer - it recently happened on my Tubby and the dead battery set all the relays clicking like billy-o. Was cured soon as I replaced the battery.

Thats exactly whats happening Mr Morse.

Any ideas the best place to pick one up and which brand would you recommend?

[Noel]

Might be worth getting the Battery checked first to see if it really is knackered........

Didn't you recently fit a supercharger? are all belts and connections as they should be?

[Pip]

Aye it was fitted recently. Fitted professionally. During fitting the Battery was drained because of the boot being left open. I personally think it is the Battery as its having all the symptoms as Mr Morse's but i will get it checked.

[Mr Morse]

Actually I found from experience that a dead or dying battery can play havoc with an alarm/immobilizer - it recently happened on my Tubby and the dead battery set all the relays clicking like billy-o. Was cured soon as I replaced the battery.

Thats exactly whats happening Mr Morse.

Any ideas the best place to pick one up and which brand would you recommend?

I fitted the Bosch AsiaSILVER 005 (60 amp/hrs) to the Tubby, same type for the IS200/300/GS300. £50.51 + VAT

Look on the "dealer locator" tab on this page: Bosch batteries

[Pip]

It was the Battery guys. Thanks for the input.

[Pip]

A follow up question. This has happened again with the new Battery. Had the Battery tested and the alternator, no problems. The guy suggested its because i dont do much mileage on a daily basis the Battery is not getting sufficient charge. I drive about <2miles a day, to the gym and back and maybe shopping. Once a week to the neighbouring town for ninjitsu and thats it. I generally have the heating running, stereo, road angel and minidisc on. Sometimes the car is not used at all. Would all these devices and a combination of little use be enough to discharge the Battery?

BTW standard lexus alarm.

[Rob]

may well be because the new batteries are not always in a fully charged state - go for a good drive then see what happens

[Pip]

its very annoying mate and want to get down to the bottom of it.

[Pip]

Charged the Battery and will wait. Need to get to the bottom of it. I think i have a duff Battery myself as i went for the cheaper Exide option.

[Bazza]

i have suffered quite a few flat batteries

never heard the alarm yet !

Battery lasts about a month with no use, cold weather helps to flatten it quicker

[Pip]

Could be a drain then somewhere but i havent fiddled with it?

[neil.peterson]

Have you checked the fuse box???

I woke up one morning to find the headlights on full beam when we most def did not leave them on. Went out for a drive and they basically would not turn off had to find the fuse for the lights and take that out. That sapped our Battery and we then had the problems with the alarm etc.

The problem seems to be the light relay in the fuse box, has anyone else had this problem?

Does anyone know anywhere to get hold of light relays etc? searched on google etc and have had no luck so far.Have spoke to lexus but would like to get it cheaper if poss.

[Pip]

mate it was a Battery drain form suspension lighting that had gone faulty. Leading to flattening my Battery.

[Bazza]

mate it was a battery drain form suspension lighting that had gone faulty. Leading to flattening my battery.

whats "suspension lighting"

[Pip]

where the suspension and arches are very faintly lit with a back light giving an eerie glow to the car