405 Alarm - disabling/resetting

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greg123
Posts: 50
Joined: 26 Apr 2008, 00:14

405 Alarm - disabling/resetting

Unread post by greg123 »

After a flat battery from being stood (brought the alarm on while trying to crank) I have realised the alarm no longer works. The remote locking does, but not the alarm. If the battery gets low and you try to start it, the siren goes off and it's difficult to stop it cycling off and on even with repeated locking/unlocking. Otherwise - nothing, no pip, no indicator flash, no flashing led.

About 2 years ago I manually soldered the disable wires (the key switch under the bonnet) because the p/o had turned it off and lost the key, now wondering if that was because of an issue, or if this is co-incidence.

I tried disconnecting the battery for a while, that didn't help.

Just wondered if there is any reset procedure, if not, what is the easist way to cut it out the system without affecting the remote locking so it doesn't cause any problems in the future.

Regards,
Greg.
greg123
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Joined: 26 Apr 2008, 00:14

Unread post by greg123 »

PS it's a 94 on phase two with no keypad & an infa red remote key with a single button, if that helps.

Greg.
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AndersDK
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Re: 405 Alarm - disabling/resetting

Unread post by AndersDK »

greg123 wrote:I tried disconnecting the battery for a while, that didn't help.
Was that at least 1hr ?
Try leave it disconnected overnight - then leave it connected for 1hr before you try use the car.
Anders (DK) - '90 BX16Image
greg123
Posts: 50
Joined: 26 Apr 2008, 00:14

Re: 405 Alarm - disabling/resetting

Unread post by greg123 »

I'll give it a go tonight - thanks buddy.
AndersDK wrote:
greg123 wrote:I tried disconnecting the battery for a while, that didn't help.
Was that at least 1hr ?
Try leave it disconnected overnight - then leave it connected for 1hr before you try use the car.
Last edited by greg123 on 25 Jun 2008, 23:39, edited 1 time in total.
greg123
Posts: 50
Joined: 26 Apr 2008, 00:14

Unread post by greg123 »

Well, quite interesting - unlocked the car with the remote key plip, popped the bonnet, locked the car, disconnected the battery and the alarm went off (loud!), getting quiet quite quick, then carried on (but quiet, like a toy) for about an hour. After which it changed tone to that of a cop car for 15 mins, then went solid tone for 15 mins, then 2-tone gradually slowing down till it stopped for 15 mins. Took about hour and a half to die down!

Have left the battery off and will re-post tomorrow.

Greg.
TehAgent
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Unread post by TehAgent »

IF its anything like the 406, then my guess is that leaving the battery off isn't going to do much.

When you disconnect the battery terminal on the 406, then reconnect it, the alarm arms its self. with out using the key fob, unlocking the doors then opening them will result in the alarm going off, the only way to turn the alarm off with out the key fob. is to hold in the sensor button for about 10seconds there is an indicator light on the button, that should stop flashing (located on the 406, on the right next to the steering shroud near the head light height adjustment) then enter the immobiliser code.

As stated, this may or may not be the same as the 405
Peugeot 208 active 1.6 EHDi
BMW 330i 2007
Mx5 Mk1 1990
greg123
Posts: 50
Joined: 26 Apr 2008, 00:14

Unread post by greg123 »

Good news, after leaving the battery off overnight all is fine. I think when the battery was low from being stood the alarm got confused and stuck in that state till it had a chance to properly power down.

Anyhow all good, pip and lights and alarm and locking all working!

Greg.
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AndersDK
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Unread post by AndersDK »

Good news indeed Greg :!:

The reason why it does a rather long swan-song, is a build in NiCd battey cell to have its own emergency power, should a theft start unhooking the battery.

It takes time to discharge/recharge this battery.
Anders (DK) - '90 BX16Image
greg123
Posts: 50
Joined: 26 Apr 2008, 00:14

Unread post by greg123 »

Thanks Anders!

Yes I understood that, I was more amused by the way it went to about 1/4 voltage (as demonstrated by the toy in a chocolate egg level of volume) within about 5 minutes, but survived another hour+ makign a variety of police type sirens which I'm sure it wasn't supposed to lol.

All good!

:P :P :P
AndersDK wrote:Good news indeed Greg :!:

The reason why it does a rather long swan-song, is a build in NiCd battey cell to have its own emergency power, should a theft start unhooking the battery.

It takes time to discharge/recharge this battery.
fodtommo
Posts: 39
Joined: 09 Jul 2008, 10:23

Unread post by fodtommo »

I have reset the alarms on all sorts of 90's puegeots using the following method:

With the ignition off remove the large fuse marked HD from the fuse box.

Turn the ignition on and insert the fuse. This has always sorted them when they have gone awol for me!