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Author Topic: Possible Immobiliser Problem  (Read 6040 times)

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Joiner

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Possible Immobiliser Problem
« on: 31 March 2015, 22:45:00 »
Hi all,

Just got in after Green Flag failed to get the Miggy working.

Basically went to our local Tesco's at 8, came out 30 minutes later and she wont start. Plenty of power, checked this with a meter. All lights come on with ignition but engine will not turn. Its as though someone has pinched my stater motor or it thinks its in gear. Chances are it may even think this and it could be a dodgy switch on the P position on the shift (its an auto btw)

The guy from Green Flag connected up his basic diagnostics hand held and said it couldn't access the ECU?

If it is an immobiliser problem is this a costly and difficult fix that only a VX dealer can do? If so it'll probably be more than my Miggy is actually worth!

Any advice would be great.

Cheers all :y

Edit: Keyfob battery is old and don't have another key. Could this have any effect on it. The key fob DID unlock the CL so I can only assume that the immobiliser should have deactivated itself?
« Last Edit: 31 March 2015, 22:47:27 by Joiner »
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Andy B

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Re: Possible Immobiliser Problem
« Reply #1 on: 31 March 2015, 22:49:18 »
Try a pedal test ..... throttle & brake pedal to the floor, turn ignition on - don't start it  ;) and count the fllashes from the engine management light.
Immobiliser problems will still allow the engine to turn, but it won't start and it'll continually flash the EML  ;)

Could be a gear selector fault  :-\
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Joiner

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Re: Possible Immobiliser Problem
« Reply #2 on: 31 March 2015, 22:51:39 »
Hi Andy,

Yes, I know the pedal trick, haven't tried it on this occasion. There maybe some truth in the gear selector issue as once in a while the key wont release when placed in P. Is there a switch/sensor that would cause this problem?
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Andy B

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Re: Possible Immobiliser Problem
« Reply #3 on: 31 March 2015, 23:01:13 »
Quote from: Joiner on 31 March 2015, 22:51:39
Hi Andy,

Yes, I know the pedal trick, haven't tried it on this occasion. There maybe some truth in the gear selector issue as once in a while the key wont release when placed in P. Is there a switch/sensor that would cause this problem?

If the car doesn't know it's in Park or Neutral, then it's not going to know that it can start ...... how are the selector lights on the transmission selector? They can do their own thing if the selector needs a clean

http://www.omegaowners.com/forum/index.php?topic=90673.0
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Joiner

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Re: Possible Immobiliser Problem
« Reply #4 on: 31 March 2015, 23:06:03 »
I have noticed on the odd occasion in the past that they have all flashed when selecting a gear but I ignored it as everything still worked fine. Im hoping that its not going to be a costly fix whatever it is.
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kevinp58

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Re: Possible Immobiliser Problem
« Reply #5 on: 31 March 2015, 23:13:37 »
Have you tried starting it in neutral ?
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Joiner

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Re: Possible Immobiliser Problem
« Reply #6 on: 31 March 2015, 23:21:42 »
Can't say I have Kevin, never even thought to if I'm honest. Can't try now as Ive had to leave her where she is over night and come home. :-\
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05omegav6

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Re: Possible Immobiliser Problem
« Reply #7 on: 01 April 2015, 00:09:47 »
Quote from: kevinp58 on 31 March 2015, 23:13:37
Have you tried starting it in neutral ?
Was thinking the exact same thing...
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Joiner

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Re: Possible Immobiliser Problem
« Reply #8 on: 01 April 2015, 11:04:25 »
Quick update on this.

Went to meet the recovery truck to collect the car 30 minutes ago. When I left her last night I removed all the main fuses, replaced them this morning and she fired up no problem. Drove 2 miles homes, parked up and killed the engine. Tried to start her, nothing, wouldnt turn over.

Tried to start in neutral as suggested, no joy.

Did the pedal trick, no faults reported.

Even tried holding the ignition on fully while moving the transmission selector through the positions to see if it caught but nothing.

Help........................... :-\
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Field Marshal Dr. Opti

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Re: Possible Immobiliser Problem
« Reply #9 on: 01 April 2015, 11:08:12 »
Quote from: Joiner on 01 April 2015, 11:04:25
Quick update on this.

Went to meet the recovery truck to collect the car 30 minutes ago. When I left her last night I removed all the main fuses, replaced them this morning and she fired up no problem. Drove 2 miles homes, parked up and killed the engine. Tried to start her, nothing, wouldnt turn over.

Tried to start in neutral as suggested, no joy.

Did the pedal trick, no faults reported.

Even tried holding the ignition on fully while moving the transmission selector through the positions to see if it caught but nothing.

Help........................... :-\

OOF will solve the riddle...................................eventually. :y
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Joiner

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Re: Possible Immobiliser Problem
« Reply #10 on: 01 April 2015, 11:11:59 »
Sure hope so Doc :y
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Joiner

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Re: Possible Immobiliser Problem
« Reply #11 on: 01 April 2015, 13:25:19 »
Quick update in case this is relevant?

When I got her home this morning I decided to leave the fuses in and let her cool down. Tried starting her after around 45 minutes, nothing. Tried again after another 20 minutes, again nothing. Tried after another 20 minutes and she fired up. Three times on the trot to be exact but after a fourth turn of the key, dead again. Left her for twenty minutes, she started again twice but not on the third attempt.

Just went out after another 20 odd minutes, turned the key. She began starting but I turned the key back before the engine caught. Tried again immediately but she wouldn't turn.

Does this give any clues as to what the problem is at all?
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Steve B

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Re: Possible Immobiliser Problem
« Reply #12 on: 01 April 2015, 13:36:15 »
You clearly have a problem with your gear selector switch which you pointed out on post #4 So think be best if you sorted that issue first  :y
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Joiner

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Re: Possible Immobiliser Problem
« Reply #13 on: 01 April 2015, 13:42:05 »
Quote from: BIGtime on 01 April 2015, 13:36:15
You clearly have a problem with your gear selector switch which you pointed out on post #4 So think be best if you sorted that issue first  :y

I don't doubt it Bigtime, what I don't understand is why it seems to go away if I leave her standing for a while?
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sjc

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Re: Possible Immobiliser Problem
« Reply #14 on: 01 April 2015, 14:09:54 »
Sticky starter solenoid?

Do you hear any noises at all when you turn the key?
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