Omega Owners Forum
Chat Area => General Car Chat => Topic started by: terry paget on 08 December 2020, 22:02:01
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2008 Astra petrol 1.6 manual
Daughter's car went into a garage in London for thermomost replacement to correct a warning light on. Thermostat is replaced, warning light is off, but she reports the horn soes not work now.
Please advise.
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Check the basics first
ground and switched live at the horn
could just be the button or simple fault BUT the astra H has had issues with CIM failure which manifests as no horn working IIRC
some info (https://www.astraownersnetwork.co.uk/threads/cim-recall-customer-care-experience.105286/) won't be covered by any warranty now though 12 years down the line .
do you still have the astra parts car ? though the CIM (if it's the issue) would require programming ,which requires security pass ;)
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Astra parts car has been scrapped. What is the CIM?
Check the basics first
ground and switched live at the horn
could just be the button or simple fault BUT the astra H has had issues with CIM failure which manifests as no horn working IIRC
some info (https://www.astraownersnetwork.co.uk/threads/cim-recall-customer-care-experience.105286/) won't be covered by any warranty now though 12 years down the line .
do you still have the astra parts car ? though the CIM (if it's the issue) would require programming ,which requires security pass ;)
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Column Integrated Module :y
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It should have a metal clip on it, if not its worth fitting one
But the first thing to do is measure at the horn to see if its getting volts
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This is the third Astra I have owned that has suffered a failed horn, seems to be a common fault. On my first Astra (died of a seized engine during MOT) a forum member kindly posted instructions for changing changing the CIM; I began to do it on my donor car, but lost interest. Is it a big job?
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This is the third Astra I have owned that has suffered a failed horn, seems to be a common fault. On my first Astra (died of a seized engine during MOT) a forum member kindly posted instructions for changing changing the CIM; I began to do it on my donor car, but lost interest. Is it a big job?
Not only did you lose interest, you actually forgot what a CIM is ;D
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Google it carefully... :o
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This morning this car would not start. Daughter Catherine rang the RAC, when the man arrived, he opened the bonnet, and immediately spotted the fault - not connected, he said - reconnected it (battery lead presumably) engine then started. The RAC man had a quick look at the horn, but could not see any obvious fault.
She had a local garage change the thermostat recently to extinguish a warning light, I guess they left they battery lead loose.
After their repair Catherine noticed the horn did not work. She is taking the car back to them tomorrow to check the horn. It sounds horribly like the CIM, doesn't it? Browsing Amazon I have found information, and some ebay videos. I read there were recalls. On e-bay new CIMs cost £185 and used ones less. Have any members done it? Some videos change the CIM, others clean the contacts.
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could just be the horn button or loose connection ,bad earth
if it is the CIM do you have the car pass ?
in theory ...I don't see an issue with fitting a push button on the dash for a horn :-\
if the horn not working is the only issue
I've never had to replace a CIM ,DOH ! just jinxed myself ;D
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I see no reason why a push button on the dash, labelled HORN, should not suffice either. There is no other fault. Or either on the centre console.
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Or a tassel hanging from the roof ,connected to a massive air horn ,like a train or lorry :D
Don't think I've ever used a car horn for it's intended purpose
i'm usually hammering the brakes or GO pedal and steering to get the **** out the way ::)
but a working horn is a requirement of the MOT test
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I will say it, this is crap advice from all, you must go through basic diag before deciding what the fault is.
You must check for volts at the horn and work back.
Diving in with 'its the CIM' is going down the road that bad mechanics do..........plus the CIM failure impacts more than just the horn (as its a connection inside that has the issue, hence why metal clips were fitted.....)
And Dave...........an earth on a car, really :y
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I will say it, this is crap advice from all, you must go through basic diag before deciding what the fault is.
You must check for volts at the horn and work back.
Diving in with 'its the CIM' is going down the road that bad mechanics do..........plus the CIM failure impacts more than just the horn (as its a connection inside that has the issue, hence why metal clips were fitted.....)
Absolutely right.
Not only is easier, quicker and more likely to find the fault than immediately blaming the complicated thing you don't understand, but it tends to be cheaper too.
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I will say it, this is crap advice from all, you must go through basic diag before deciding what the fault is.
You must check for volts at the horn and work back.
Diving in with 'its the CIM' is going down the road that bad mechanics do..........plus the CIM failure impacts more than just the horn (as its a connection inside that has the issue, hence why metal clips were fitted.....)
And Dave...........an earth on a car, really :y
Don't be so NEGATIVE ;D :D
I did say..... Check the basics first ...
PLUS...
Terry can't check anything because the car is not with him, it's going to a garage i think, and garages are not always honest :-X
warning him of the possible CIM fail ,so he knows it's an expensive job IF the garage have to replace/reprogram it .will at least prompt him to take a jar of vaseline :o
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I will say it, this is crap advice from all, you must go through basic diag before deciding what the fault is.
You must check for volts at the horn and work back.
Diving in with 'its the CIM' is going down the road that bad mechanics do..........plus the CIM failure impacts more than just the horn (as its a connection inside that has the issue, hence why metal clips were fitted.....)
And Dave...........an earth on a car, really :y
Don't be so NEGATIVE ;D :D
I did say..... Check the basics first ...
PLUS...
Terry can't check anything because the car is not with him, it's going to a garage i think, and garages are not always honest :-X
warning him of the possible CIM fail ,so he knows it's an expensive job IF the garage have to replace/reprogram it .will at least prompt him to take a jar of vaseline :o
I hope for Terry's sake it is a simple fault :)
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I will say it, this is crap advice from all, you must go through basic diag before deciding what the fault is.
You must check for volts at the horn and work back.
Diving in with 'its the CIM' is going down the road that bad mechanics do..........plus the CIM failure impacts more than just the horn (as its a connection inside that has the issue, hence why metal clips were fitted.....)
And Dave...........an earth on a car, really :y
Agreed, understood, always my plan. Trouble is the car is in Enfield, 120 miles away. She put the car into a garage to cure the engine light on, they changed the thermostat, making a coolant leak, changed the thermostat holder to cure that, charged her £330, and returned the car with no horn. On my instruction she complained to the garage about the horn, and this morning the car is back with them to sort it, checking 12 volts and decent earth.
Shall I find 12 volts positive at the horn or at the horn press?
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If it's at the garage, you're unlikely to find anything...
Horn circuits tend to be grounded at their mountings ;)
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Catherine rang Greenfrog garage, was told car needs new horn, new Vx horn will cost £74, none in UK, 7 days from Germany. I told daughter to collect the car, bring car home at Christmas, I will look at it.
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Catherine rang Greenfrog garage, was told car needs new horn, new Vx horn will cost £74, none in UK, 7 days from Germany. I told daughter to collect the car, bring car home at Christmas, I will look at it.
You can buy a pair(high and low tone) of decent quality branded horns for less than £20.
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Catherine rang Greenfrog garage, was told car needs new horn, new Vx horn will cost £74, none in UK, 7 days from Germany. I told daughter to collect the car, bring car home at Christmas, I will look at it.
My apologies to Greenfrog garage, it was Chase Side Motors who changed the thermostat on Catherine's car and created a coolant leak, then changed the thermostat holder, then left the battery lead loose, and now want to change the horns
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something like THIS £8.50 (https://www.ebay.co.uk/itm/12V-LOUD-SET-DUAL-TONE-AIR-HORN-VAUXHALL-VECTRA-ASTRA-OMEGA-CORSA-ZAFIRA-E-MARK/383008860170?hash=item592d1b680a:g:6DUAAOSwudFdBfcn) would save more painful bills from a garage ,easy for even a novice to fit with minimal tools :-\
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I have a pair of Omega horns on a mounting. I imagine they would serve on the Astra if that were the fault. Car will arrive home on December 23rd.
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you may have to cobble a bracket together out of the astra and Omega ones, but that won't be hard :)
or just fit one
pay yourself double time when you do the job , it being Christmas ;D
good luck with the fix :)