Electrics: 70: - A peculiarity in the central locking??

christheancient · May 9th, 2013, 11:26

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?

V70Zig · May 9th, 2013, 17:53

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 ?

christheancient · May 9th, 2013, 20:06

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?

V70Zig · May 11th, 2013, 07:14

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.

christheancient · May 12th, 2013, 15:53

Quote:

Originally Posted by V70Zig

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.

Sorry for the delay - not been on line for a couple of days!

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?

klausc · May 12th, 2013, 18:13

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.

christheancient · May 13th, 2013, 11:39

A scan with VIDA/DICE did say that there were several 'problems' in the alarm system (I do remember the ultrasonic sensors being flagged up).

However... pennies are tight and I can't justify the cost of replacing anything in the alarm system on a car of that vintage at the moment.

Is there a way of disabling the alarm system completely without affecting the rest of the central locking system?

RiPsTa33 · May 13th, 2013, 13:13

Yes the deadlocks will work by locking the car with just the key, i can send you a pair of ultrasonic sensors for £10 in black or beige

christheancient · May 13th, 2013, 17:26

Quote:

Originally Posted by RiPsTa33

Yes the deadlocks will work by locking the car with just the key, i can send you a pair of ultrasonic sensors for £10 in black or beige

Thanks for the answer on the deadlocks.

New ultrasonics would be a waste at the moment - they'd be the only bit of the alarm system that would probably be serviceable!

V70Zig · May 13th, 2013, 18:27

Ok...so the led flashes after starting (means fault) which you know about. Deadlocks engage with locking by key only, so try it and post back the outcome.

May 9th, 2013, 11:26	#1
christheancient Aged Volvo Lover Last Online: Sep 16th, 2021 10:19 Join Date: Jan 2011 Location: A place in mendip-land famous for its cheese - and its gorge	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? __________________ Our children don't inherit the world from us. We are borrowing it from them.

May 9th, 2013, 17:53	#2
V70Zig Master Member Last Online: Apr 10th, 2024 16:20 Join Date: Sep 2012 Location: Loughborough	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 ? __________________ 2008 V70 SE D5 Auto 185 ...now 205 Volvo Polestar......190k Passed away - 1999 V70 2.5tdi Auto 340632 miles, RIP.

May 9th, 2013, 20:06	#3
christheancient Aged Volvo Lover Last Online: Sep 16th, 2021 10:19 Join Date: Jan 2011 Location: A place in mendip-land famous for its cheese - and its gorge	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? __________________ 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
V70Zig Master Member Last Online: Apr 10th, 2024 16:20 Join Date: Sep 2012 Location: Loughborough	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. __________________ 2008 V70 SE D5 Auto 185 ...now 205 Volvo Polestar......190k Passed away - 1999 V70 2.5tdi Auto 340632 miles, RIP.

May 12th, 2013, 18:13	#6
klausc Old fart Last Online: Apr 2nd, 2022 02:39 Join Date: Sep 2008 Location: Shorewood, Minnesota	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. __________________ KlausC

May 13th, 2013, 11:39	#7
christheancient Aged Volvo Lover Last Online: Sep 16th, 2021 10:19 Join Date: Jan 2011 Location: A place in mendip-land famous for its cheese - and its gorge	A scan with VIDA/DICE did say that there were several 'problems' in the alarm system (I do remember the ultrasonic sensors being flagged up). However... pennies are tight and I can't justify the cost of replacing anything in the alarm system on a car of that vintage at the moment. Is there a way of disabling the alarm system completely without affecting the rest of the central locking system? __________________ Our children don't inherit the world from us. We are borrowing it from them.

May 13th, 2013, 13:13	#8
RiPsTa33 Trader Last Online: Jul 7th, 2022 15:22 Join Date: Jan 2007 Location: Shildon	Yes the deadlocks will work by locking the car with just the key, i can send you a pair of ultrasonic sensors for £10 in black or beige __________________ ABS Ecu Repairs £25 850 T5 304 Chip £80

May 13th, 2013, 18:27	#10
V70Zig Master Member Last Online: Apr 10th, 2024 16:20 Join Date: Sep 2012 Location: Loughborough	Ok...so the led flashes after starting (means fault) which you know about. Deadlocks engage with locking by key only, so try it and post back the outcome. __________________ 2008 V70 SE D5 Auto 185 ...now 205 Volvo Polestar......190k Passed away - 1999 V70 2.5tdi Auto 340632 miles, RIP.

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