NikTheGeek

NikTheGeek

New Member
I have the alarm fault message when I superlock or put the key in. Everything else works ok. I've replaced the ultrasonic sensor with another known good one and still the same. I've unplugged leads from the BECM and WD40'd them and still the same. I've opened and shut all doors and tailgate and bonnet and WD40'd the catches and still the same.

It's not a problem, other than it's bugging me a little. Any thoughts what I can check next?

tnx

Nik
 
WD is not an electrical contact cleaner....clean the WD40 out of the plugs before it goes sticky and use a good contact cleaner!!
 
Had the car on a diagnostic now. A very detailed one that told me my heater mixer motors were wearing out, my RH air bag was showing a fault, but that everything else was fine. However, there was no sign of the "Alarm Fault" on the diagnostic. Having had a diagnostic done, the fault immediately went away anyway until I superlocked the car and it came straight back.

So, "Alarm Fault" that isn't the ultrasonic and doesn't show up on a diagnostic. Any ideas?

Nik
 
If it only comes on when you superlock - I would be sure it is a ultrasonic sensor, as they ar eonly activated on a superlock situation.....non-superlock is just perimetric (doors, tail and bonnet only) ..... superlocking activates internal sensing, and superlock motors in addition to perimetric.

I would also like to know what device they used to tell you the motors are wearing out and that the bag is shot....as far as I know the motors don't have wear indicators to feedback and the bags have no method either - bar maybe the valve being opened more than normal to keep it full!!
 
Saint.V8 said:
If it only comes on when you superlock - I would be sure it is a ultrasonic sensor, as they ar eonly activated on a superlock situation.....non-superlock is just perimetric (doors, tail and bonnet only) ..... superlocking activates internal sensing, and superlock motors in addition to perimetric.

I would also like to know what device they used to tell you the motors are wearing out and that the bag is shot....as far as I know the motors don't have wear indicators to feedback and the bags have no method either - bar maybe the valve being opened more than normal to keep it full!!
Click to expand...

Tried 3 sensors now. All guaranteed by the sellers as tested and working. He did tell me what kit he used. It was blue, had 2 handles on it and cost £12k he said. It was the heater mixer motors if that makes a difference. He said it wouldn't tell him which one of the 2.

I'm reasonably sure he wasn't making it up as if he was, he'd have found something wrong to charge me for. I was also have my VCU tested and he said it was fine and didn't take the opportunity to charge me for a new one!

It *may* have been an approved LR garage as the mechanics had LR overalls on and they were selling a shed load of LR stuff like mugs and teddybears etc in the shop.

That help? :)

Nik
 
Sounds like they used an Autologic or Rovacom system.....

There are technically 3 blend motors - two for temp left and right and one for distribution.

Still not sure how they can tell they are wearing out, but hey ho, ~I don't own a diagnostic device that cost 12k.....so never seen/used one!!

As for your alarm fault, if it only happens when superlocking, i'd be looking at the items that are activated during a superlock - you have tried the semnsors, so the next thing on the list would be the superlock motors as nothing else is activated during a superlock, bar from putting the BeCM into a state that if it is superlocked and no code is recieved from the fob, it will need the EKA code to remobilise....thats all....

So next up is to superlock and when doing that, go round each door and listen for the superlock motor engaging.....

if they all seem to be functioning....I am not sure where to go next other than not to superlock!!
 
hi nik did you manage to get your problem sorted, as i have the same one, changed interior sensors, and rear passenger door lock as it wasn't showing up on dash with engine running and door opened, and still got the alarm fault when trying to superlock.

steve
 
stemac33 said:
hi nik did you manage to get your problem sorted, as i have the same one, changed interior sensors, and rear passenger door lock as it wasn't showing up on dash with engine running and door opened, and still got the alarm fault when trying to superlock.

steve
Click to expand...

It's fixed. No faults. But I don't know what did it TBH. I did buy a total of 3 sensors off ebay - figuring that some might be duff or untested. How do they test an ultrasonic sensor? Also, I read somewhere that the alarm checks it's circuits once every 5 arm/disarm cycles - so maybe you have to arm it and disarm it a few times before a working sensor registers as fine.

Anyway, I have 2 here you can have to test if you want to pay postage? I don't want to put them on ebay as I can't guarentee them!

Nik
 
There are two blend motors L and R. One distribution motor and two recirculation motors one in each blower unit. You maybe better with dedicated diagnostics. As others have said i think alarm fault has to be ultrasonic sensor or activation of same related problem. Maybe one of the superlock motors has failed.
 
NikTheGeek said:
It's fixed. No faults. But I don't know what did it TBH. I did buy a total of 3 sensors off ebay - figuring that some might be duff or untested. How do they test an ultrasonic sensor? Also, I read somewhere that the alarm checks it's circuits once every 5 arm/disarm cycles - so maybe you have to arm it and disarm it a few times before a working sensor registers as fine.

Anyway, I have 2 here you can have to test if you want to pay postage? I don't want to put them on ebay as I can't guarentee them!

Nik
Click to expand...

"Alarm Fault" Message: The most common cause of this message being displayed on the Message Center is failure of the ultrasonic sensor which monitors the interior of the vehicle for intruders. The BeCM does a check on this sensor every time you switch the engine off and get out. If it does not work 5 consecutive times it generates the fault message. Replacement of the sensor, which is located above and to the left of the driver's head, is simple.
 
defender300td1 said:
"Alarm Fault" Message: The most common cause of this message being displayed on the Message Center is failure of the ultrasonic sensor which monitors the interior of the vehicle for intruders. The BeCM does a check on this sensor every time you switch the engine off and get out. If it does not work 5 consecutive times it generates the fault message. Replacement of the sensor, which is located above and to the left of the driver's head, is simple.
Click to expand...

But if you replace it, is it an immediate fix or might you have to lock/unlock for up to 5 consecutive times too? I know the third time I replaced mine, it still said "Alarm Fault" but then the message was gone next time I locked it, never to re-appear! (so far)

Nik
 
NikTheGeek said:
It's fixed. No faults. But I don't know what did it TBH. I did buy a total of 3 sensors off ebay - figuring that some might be duff or untested. How do they test an ultrasonic sensor? Also, I read somewhere that the alarm checks it's circuits once every 5 arm/disarm cycles - so maybe you have to arm it and disarm it a few times before a working sensor registers as fine.

Anyway, I have 2 here you can have to test if you want to pay postage? I don't want to put them on ebay as I can't guarentee them!

Nik
Click to expand...

You can use an oscilloscope or a voltmeter. But the oscilloscope is best since you can see the shape of the generated wave and the received wave.
 
NikTheGeek said:
But if you replace it, is it an immediate fix or might you have to lock/unlock for up to 5 consecutive times too? I know the third time I replaced mine, it still said "Alarm Fault" but then the message was gone next time I locked it, never to re-appear! (so far)

Nik
Click to expand...

It will have to recycle to know it has a working one :)
 
NikTheGeek said:
It's fixed. No faults. But I don't know what did it TBH. I did buy a total of 3 sensors off ebay - figuring that some might be duff or untested. How do they test an ultrasonic sensor? Also, I read somewhere that the alarm checks it's circuits once every 5 arm/disarm cycles - so maybe you have to arm it and disarm it a few times before a working sensor registers as fine.

Anyway, I have 2 here you can have to test if you want to pay postage? I don't want to put them on ebay as I can't guarentee them!

Nik
Click to expand...

Do you still have these?? May I be cheeky and ask if I can try one?? as I too have the alarm fault message :mad:

Beer tokens of course :D
 
JohnnyCrash said:
Do you still have these?? May I be cheeky and ask if I can try one?? as I too have the alarm fault message :mad:

Beer tokens of course :D
Click to expand...

You can have them both FOC. I couldn't put them on ebay as I can't say for sure if they work. All I know is the one I currently have fitted still gave me the fault warning until several lock/unlock cycles - then it cleared. So one of these might be ok.

Warrington or Billinge easiest for you?

Nik
 
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