Immobilizer problem

[GeeYou8]

I only venture down to the mechanical/electrical section if I have read all the general discussion bits.
I would have suggested disconnect the battery for a few hours & reconnect with the ignition off.
Graham

[mudnut]

I have had a run in with a an after market immobiliser / alarm once before, on my brother in law's car. I ended up having to replace the whole front and under-dash loom as it was all burnt to a crisp.

So not a real fan of buying a vehicle with one fitted. If you do end up wiring one up, make sure you strip the old one out completely.

[Clunk]

The immobilizer and alarm started working again, on it's own.
It's a mystery!
A mystery that's being replaced with a new one.


P.S.
Hey, you blokes only posted few posts for me after I start whinging about not getting any hits.

I wouldn't take it to heart mate, more than likely to do with the right people not coming across your post yet...... not sure where Yendor is but ET would have been travelling over to SA, then making his way over to the weekends festivities at ABs place for Roothys Donk party

[Bigcol]

and I have only just got back from my sojourn to the Goldfields


as GeeYou8 said, I would have turned ignition off, un-plugged battery, and re-connected to try that

sounds like a "sticking" solenoid

but if you have already removed it, make sure you remove ALL the old wiring so there is no "loose" wiring laying around inside your car








PS......... most people dont give a shyte who you are, they answer if they can have a positive input





PPS....... you would have been just as pissed if you had 20 posts saying "sorry mate - cant help - dunno..............."

[GeeYou8]

Yeah, hopefully I will get few more hits later.

I'm bit bothered with an alarm and immobilizer dying after battery disconnection, without killing the ability
to start the car. Pretty worrying.
I need some answers from an experienced bloke.

I was disconnecting the battery on the mother o laws car to stop the immobiliser flattening the battery & you could start it after reconnection without disarming the immobiliser, in fact the LED didn't blink until a few min after reconnection.
I think this is a design feature, if you disconnect for X amount of time & reconnect, you can start the car, that way you can rescue a car when you have lost the plug/remote/RFID tag. It also means that if you hit a big bump and lose power to the immobiliser for a moment it does not shut down the engine. On some you turn the ignition on for 15 or 20 min then you can start.
The immobiliser will only slow a car thief down.
Graham

[Yendor]

I dunno.............. What to say

When an aftermarket alarm plays up normally it's

1. The alarm goes off randomly for no reason, normally in the early hours of the morning,

2. It drains the starting battery, preventing the vehicle from starting.

3. Or it just prevents the vehicle from starting.

I haven't heard of one playing up like yours before but then I guess most people won't know if it was doing this.

I'm not a big fan of aftermarket alarms especially in 4WDs. The environment is just to harsh for them.

If yours is playing up I would replace it now.

[dom14]

and I have only just got back from my sojourn to the Goldfields


as GeeYou8 said, I would have turned ignition off, un-plugged battery, and re-connected to try that

sounds like a "sticking" solenoid

but if you have already removed it, make sure you remove ALL the old wiring so there is no "loose" wiring laying around inside your car








PS......... most people dont give a shyte who you are, they answer if they can have a positive input





PPS....... you would have been just as pissed if you had 20 posts saying "sorry mate - cant help - dunno..............."

True.
One post wouldn't piss me off though.

[dom14]

I was disconnecting the battery on the mother o laws car to stop the immobiliser flattening the battery & you could start it after reconnection without disarming the immobiliser, in fact the LED didn't blink until a few min after reconnection.
I think this is a design feature, if you disconnect for X amount of time & reconnect, you can start the car, that way you can rescue a car when you have lost the plug/remote/RFID tag. It also means that if you hit a big bump and lose power to the immobiliser for a moment it does not shut down the engine. On some you turn the ignition on for 15 or 20 min then you can start.
The immobiliser will only slow a car thief down.
Graham

Ok, cool mate.
I thought immobilizer is meant to stop a thief.
If every thief knows this, they would simply disconnect the battery to stop the alarm/immobilizer and reconnect the battery to get it started.
It's a wonderful design.
So, my auxiliary security measurements are far more reliable.

[dom14]

I dunno.............. What to say

When an aftermarket alarm plays up normally it's

1. The alarm goes off randomly for no reason, normally in the early hours of the morning,

2. It drains the starting battery, preventing the vehicle from starting.

3. Or it just prevents the vehicle from starting.

I haven't heard of one playing up like yours before but then I guess most people won't know if it was doing this.

I'm not a big fan of aftermarket alarms especially in 4WDs. The environment is just to harsh for them.

If yours is playing up I would replace it now.

But, aftermarket one is the only solution for an ancient 4WD like mine.

Yeah, I'm replacing it.

I'm glad it happened. Now, I know I can't count on the immobilizer to prevent the car from getting stolen.

[GeeYou8]

Ok, cool mate.
I thought immobilizer is meant to stop a thief.
If every thief knows this, they would simply disconnect the battery to stop the alarm/immobilizer and reconnect the battery to get it started.
It's a wonderful design.
So, my auxiliary security measurements are far more reliable.

All you can hope to do is make it harder to take, if they really want it they can hook it up to a tow truck or tilt tray.
It took me about 10 minutes to remove the immobiliser from the Excel when fault finding (crank angle sensor was stuffed).
Graham