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850 / S70 & V70 '96-'99 / C70 '97-'05 General Forum for the 850 and P80-platform 70-series models |
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A peculiarity in the central locking??Views : 1046 Replies : 10Users Viewing This Thread : |
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May 9th, 2013, 11:26 | #1 |
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A peculiarity in the central locking??
As far as I can judge, my central locking system works fine. All the doors lock properly, all the appropriate door and courtesy lights go out, the indicators double flash on locking and the red light on the dash flashes (the alarm doesn't work... hasn't done since I bought the car... but I'm not really bothered by that).
So... all is OK and tickety-boo... seemingly. Now the anomaly (or maybe it's just imagination). I go outside for the occasional 'cough and a drag' and stand in the car port area. A couple of times I thought that I have heard the deadbolt motors 'whir' while I'm in the vicinity of the car - just like they do a little while after the car has been locked using my remote fob. But there is no sound of deadbolts engaging. And I haven't had the car keys on my person or in my pocket! Perhaps... My iPhone has been in my pocket (Bluetooth off) and my wi-fi router for the computer is in the room above the car port. Has anybody ever heard of either of these possibly affecting their remote central locking - or are their operating frequencies miles away from any central locking electronics? It might also explain why I have had a flat battery in the car, when it hasn't been used for quite a while a couple of times, if the locking motors keep triggering. The battery and charging system have been checked thoroughly and there are no signs of more than a very minor 'drain' that is well within acceptable limits when the car is at 'rest'. Thoughts?
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May 9th, 2013, 17:53 | #2 |
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Not a clue...but you say the alarm hasn't worked since you got it ? Not sure but my thoughts are....should the alarm system receive a signal from the deadlock system ? So once set it doesn't try to deadlock again ? (even though it has, hence just the 'whir') and trying to deadlock again ?
Do you have access to Dice as this might throw up a fault. Alarm issues don't trigger the eml. Alarm light flash more than a couple of times after start up ?
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May 9th, 2013, 20:06 | #3 |
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DICE does say many bits of alarm non-functional - but not in a way that would try to make the deadlocks want to 're-lock' as far as I can see.
And yes, I do get a couple of rapid flashes from the led after start up. Whatever it is (if it's not imagination) is only very occasional. Over the past month I think I've heard the noise three times. But then again, my 'cough and a drag' sessions are not very frequent either. Is it possible to completely disarm the alarm system?
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Our children don't inherit the world from us. We are borrowing it from them. Last edited by christheancient; May 9th, 2013 at 20:07. Reason: addition |
May 11th, 2013, 07:14 | #4 |
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Do you lock the car using the fob? I think this also sets the alarm, I'm sure I've read a couple of "alarm woe" posts where peeps lock up now with key only as this way the alarm isn't set. Worth a try.
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2008 V70 SE D5 Auto 185 ...now 205 Volvo Polestar......190k Passed away - 1999 V70 2.5tdi Auto 340632 miles, RIP. |
May 12th, 2013, 15:53 | #5 | |
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Quote:
Yes, I do lock with the fob - mainly because I know that sets the deadlocks. I've not tried it yet, but would just locking with the key set them? BTW... not heard the sound for a few days. Is it possible to completely disconnect the alarm side of things without actually going through the nausea of getting in and under the wheel arch?
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May 12th, 2013, 18:13 | #6 |
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I suspect the battery for the alarm might have leaked and has rendered the circuit board useless. This is a common problem and the only real solution is module replacement with a proper battery. A repair shop with a Volvo scan tool can check the alarm system for proper operating sequences.
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