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Old 28th June 2019, 09:15   #1
ceedy
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All Trophy Blue ,ZT260#50 , ZT CDTI Auto, ZR105+ and 1.8T Firefrost spoiling the Set .

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Default Weird Goings on with 1.8's Alarm

my Sons reported his alarm keeps going off on the way home from work ?

But ts ok in the morning going there. seems a bit weird i thought so I took it to work myself about 15 miles compared to his 8 miles.

All ok on the way in , but coming home , after about 2 miles the alarm goes off . I pull in to a layby, switch motor off and key out , but nothing stops it. fob buttons , key in door bonnet/boot up and down .
Alarm was on for about 20 secs the goes off for a moment then alarm on again . did this for about 4 times then went off and I drove home all quiet. ??

this morning tried the car I got a single beep when fob pressed once to open driver door, then no beep on second press opens the others as expected.

Tried the same a bit later an on one click to unlock I got a quick chirp of the alarm.

If i cycle the locks on and off a number of time the alarm will go off and can be switched off by the fob button.

plenums all bone dry all the connectors i've check all all dry , done a battery reset .
Nothing reported on the dash.



Any clues peeps where to look or test .. ta


Chris
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Last edited by ceedy; 28th June 2019 at 15:06..
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Old 28th June 2019, 11:46   #2
ceedy
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All Trophy Blue ,ZT260#50 , ZT CDTI Auto, ZR105+ and 1.8T Firefrost spoiling the Set .

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Had peer into the system with toaf. And loads of errors shown in the bcu, Ike and PDC sections.
Bonnet switch is mentioned twice
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The Three Bloo's
Wifey's Zr105, MY CDTI & 260 #50 and
Number One sons 1.8T in Firefrost
When I were a lad
Zero to 142 in 10.25 secs at the Pod on my Blown Norton.
210 Kart Champ in 70's

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Old 28th June 2019, 16:54   #3
Yorkshire GOC
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The alarm/immobiliser ECU - on driver side A pillar can be damaged by water ingress - do you have a sun roof? - anyway can cause the alarm to play up. Might be worth dropping a PM to MarinaBrian or BigRuss.
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Old 28th June 2019, 18:44   #4
ceedy
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All Trophy Blue ,ZT260#50 , ZT CDTI Auto, ZR105+ and 1.8T Firefrost spoiling the Set .

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No sunroof and the car is bone dry . no signs of water .


Did have a bit of water in the boot a long time back but all sorted for a while now .


Any wiring chafing I should look for ?



C
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The Three Bloo's
Wifey's Zr105, MY CDTI & 260 #50 and
Number One sons 1.8T in Firefrost
When I were a lad
Zero to 142 in 10.25 secs at the Pod on my Blown Norton.
210 Kart Champ in 70's


Last edited by ceedy; 29th June 2019 at 15:11..
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Old 29th June 2019, 11:09   #5
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Faulty bonnet switch can trigger random alarm events.
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Old 29th June 2019, 21:11   #6
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All I can suggest is you clear the alarm log, then the newest entry will be the pinpoint of the cause.

It is certainly not a common problem, in fact I cannot recall seeing anything like this before

Brian
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Old 29th June 2019, 21:25   #7
ceedy
This is my second home
 
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All Trophy Blue ,ZT260#50 , ZT CDTI Auto, ZR105+ and 1.8T Firefrost spoiling the Set .

Join Date: Nov 2006
Location: Nr Sherborne But in Somerset..
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Found the bonnet switch has signs of damp getting in, all a bit green . Only thing done so far with it is soak it in switch cleaner and lots of plugging in and out. ..we will see if it's helped in any way.
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The Three Bloo's
Wifey's Zr105, MY CDTI & 260 #50 and
Number One sons 1.8T in Firefrost
When I were a lad
Zero to 142 in 10.25 secs at the Pod on my Blown Norton.
210 Kart Champ in 70's

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Old 29th June 2019, 21:34   #8
marinabrian
 
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Quote:
Originally Posted by ceedy View Post
Found the bonnet switch has signs of damp getting in, all a bit green . Only thing done so far with it is soak it in switch cleaner and lots of plugging in and out. ..we will see if it's helped in any way.
The switch is N/C, so you can unplug it to see if that sorts the issue Chris

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Old 2nd July 2019, 09:11   #9
ceedy
This is my second home
 
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All Trophy Blue ,ZT260#50 , ZT CDTI Auto, ZR105+ and 1.8T Firefrost spoiling the Set .

Join Date: Nov 2006
Location: Nr Sherborne But in Somerset..
Posts: 6,061
Thanks: 916
Thanked 1,214 Times in 768 Posts
Default

Yesterday with switch still in but previously sprayed contacts with cleaner, had the Alarm go off twice , once on each journey to work and back and both after about 3/4 miles from start . ( time or distance related ? )


This morning unplugged the switch will see how that goes ...



If the car is unlocked with the Fob the Alarm does give a single chirp .


And I found that just spraying switch cleaner on the plug End causes the alarm to activate ,then it takes a fair bit of button pressing to get it to go off.


Cleared all the codes/reports with Toaf and will have a looksee tonite to see if anything has returned



C
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The Three Bloo's
Wifey's Zr105, MY CDTI & 260 #50 and
Number One sons 1.8T in Firefrost
When I were a lad
Zero to 142 in 10.25 secs at the Pod on my Blown Norton.
210 Kart Champ in 70's

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Old 2nd July 2019, 16:29   #10
ceedy
This is my second home
 
ceedy's Avatar
 
All Trophy Blue ,ZT260#50 , ZT CDTI Auto, ZR105+ and 1.8T Firefrost spoiling the Set .

Join Date: Nov 2006
Location: Nr Sherborne But in Somerset..
Posts: 6,061
Thanks: 916
Thanked 1,214 Times in 768 Posts
Default

Bonnet switch unplugged and Alarm still went off on way home seems to be about 5-8mins after startup ???

.
And also the IPk has lost its diagnostics ? all the display function work mpg/milestogo/speed/trip etc all ok .


My last peer in with toaf did give a error report showing in the IKE section.


will have another looksee ,after i've done all my furniture shifting tonight


C
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The Three Bloo's
Wifey's Zr105, MY CDTI & 260 #50 and
Number One sons 1.8T in Firefrost
When I were a lad
Zero to 142 in 10.25 secs at the Pod on my Blown Norton.
210 Kart Champ in 70's


Last edited by ceedy; 2nd July 2019 at 16:32..
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