Beep Beep Beep

[rambler]

hi folks

hope you are all well

keep meaning to ask this question.....sometimes when i turn off engine quickly after parking and opening door,i get a beep,beep,beep,beep alarm from under bonnet....nothing has ever gone wrong.....but im curious.

i assume its some sort of alarm

is it purely because ive turned off engine too quickly?

its done it dozens of times of last 4 years or so...and ive always been curious.

but i have to admit it only seems to do it when im in a hurry

[anchorman]

Its not the one to tell you that you opened the door and the key is still in the ignition???

[rambler]

Its not the one to tell you that you opened the door and the key is still in the ignition???

hi anchorman

no..im afraid not,that distincltly comes come under dash somewhere.

this 'other' beep,beep,beep alarm is definatley in engine bay,and as i say it only seems to go off when im in a hurry,normally if ive driven it quickly somewhere,100 yds or 1 mile,if i pull up sharpish,turn off engine quickly,open door.....this alarm sounds.

but it does seem to stop once ive closed my door & re locked it......

its allways puzzled me

no warning lights either....just a constant beep for about 10 sec's or until i close door

[dave.m]

I had this occasionally when I had my 4.2, never did get to the bottom of it.

[IanXT4]

Could it be the Bleep Bleep Bleep that happens if you accidentally press the alarm arm button on the key without closing all the doors ?

My Bleep Bleep Bleep lives under the Battery :-)

[anchorman]

Could it be the Bleep Bleep Bleep that happens if you accidentally press the alarm arm button on the key without closing all the doors ?

My Bleep Bleep Bleep lives under the Battery :-)

Certainly when I've disconnected the Battery on a 4.2 I've had a beep from under the Battery but it never seemed to affect anything. Doesn't it say in the manual somewhere?

[john21245]

Could it be the Bleep Bleep Bleep that happens if you accidentally press the alarm arm button on the key without closing all the doors ?

My Bleep Bleep Bleep lives under the Battery :-)

Certainly when I've disconnected the Battery on a 4.2 I've had a beep from under the Battery but it never seemed to affect anything. Doesn't it say in the manual somewhere?

Yesterday I decided to give the Battery a top-up charge and following the advice in the handbook, I disconnected the earth lead. As I did so I heard the "bleep bleep bleep".It certainly didn't affect anything . But how did something get any power to bleep when I had supposedly disconnected all power?

Sorry- rav 4-2 2004 vvti ! John.

[shcm]

But how did something get any power to bleep when I had supposedly disconnected all power?

Large capacitor in ECU? Did it stop eventually?

[john21245]

But how did something get any power to bleep when I had supposedly disconnected all power?

Large capacitor in ECU? Did it stop eventually?

That makes sense. Yes it did stop, in fact I didn,t really think about it until I read this post tonight.

John.

[IanXT4]

The Toyota TVSS IV-D alarm system fitted to my 4.2 has its own back-up Battery inside it (I guess its a small nicad pack).

When you disconnect the Battery without arming the alarm, it gives a few Bleeps to warn its not getting power.

I first discovered the fact that the car alarm had its own power source at 3 am one morning. Stupidly, following tests to my tow bar electrics on a late summer evening, I had left the side lights on then locked/armed the alarm. When the voltage dropped below a certain level the alarm triggered.

(The alarm manual does says it will trigger if you disconnect the Battery when its armed).

There I was at 3am trying to switch off the alarm, however, there was not enough voltage in the car battery to reset the alarm using the key fob.

I tried old tricks, like key in the ignition etc, nothing worked. After 28 seconds the siren supposed to shut off, but each time it re-triggered due to the low voltage :-(

Then I thought I'll turn the sucker off by disconnecting the battery. My wife thought I was mad getting tools out at 3am. As I opened the bonnet the alarm sounded incredibly loud, so I tried stuffing a towel around it with not much luck, the noise got out underneath. When I disconnected the battery the alarm carried on just as loud !!!!!!!!

At this point I would have used at hammer but the alarm is well protected under the battery box.

In desperation, (mine, the wifes and the neighbours) I went and got a battery charger, extension lead and connected it up to the battery, this supplied enough voltage for me to de-arm the alarm using the key fob. Phew !!!!

Its interesting that the manual (read at 3am) gives no hint of what to do if the alarm triggers due to a flat battery.

"When I were a lad" alarms fitted with their own power source were fitted with a key to switch them off :-)

Getting back to the original "Bleep Bleep Bleep Bleep" it does sound like the warning signal from the alarm. Mine gives a warning when:

1) You disconnect the Battery when its un-armed

2) You try to arm the alarm without closing all the doors

[shcm]

Well spotted Ian, I'd forgotten they'd got a Battery backed up sounder.

Try working in the same lab where some other **** is trying to test 'em.

Burying them in a bucket of sand works quite well. (So does the hammer ).