Standing Current Drain

robdcl · Nov 25th, 2015, 15:59

I have a -04 V70 with a battery that seems not to be holding charge.
As a first step I have placed an ammeter in series with the neg pole of the battery and can see that once the alarm has been set there is a continuous drain of about 100mA. Is this normal or is this what is causing the battery to discharge over time?
many thanks

kenny · Nov 25th, 2015, 18:33

I understand there is a known issue with battery drain due to a defect in the alarm system on this age of V70 and a temporary fix is to disconnect the fuse.
Unfortunately this section is for the phase 3 model. If you repost in the correct section someone will be able to sort you out with which fuse to take out and on a permanent fix.
Kenny

CTCNetwork · Nov 26th, 2015, 02:15

Hi,

/Moving..

Des. . .

reggit · Nov 26th, 2015, 06:58

Quote:

Originally Posted by kenny

I understand there is a known issue with battery drain due to a defect in the alarm system on this age of V70 and a temporary fix is to disconnect the fuse.

Kenny

F38 in the dashside fuse box is the one you need - check on the decal though as it did get moved around 2004 I believe.

robdcl · Nov 26th, 2015, 08:50

Thanks very much for the info !

Brendan W · Nov 26th, 2015, 10:02

Alarm siren module definitely a prime suspect if it's the original. Usually if the siren is failing you will get random activations and the odd warning message. With the fuse out the remote still works , the alarm sets, the led flashes and the alarm system will detect intrusion but without the sound effects. You will also get an alarm service message at every start up. New unit is about £180 and is a fairly easy diy job. It's up in the drivers wheel arch.
100 mA is not a lot. You might want to get the battery and charging system tested. Another suspect is the alternator regulator/rectifier. They can short and drain current away.

Nov 25th, 2015, 15:59	#1
robdcl New Member Last Online: Feb 20th, 2024 18:21 Join Date: Oct 2014 Location: London	Standing Current Drain I have a -04 V70 with a battery that seems not to be holding charge. As a first step I have placed an ammeter in series with the neg pole of the battery and can see that once the alarm has been set there is a continuous drain of about 100mA. Is this normal or is this what is causing the battery to discharge over time? many thanks

Nov 26th, 2015, 02:15	#3
CTCNetwork Forum Support Team Join Date: Dec 2004 Location: Liège, Belgium View Photos By: CTCNetwork	Hi, /Moving.. Des. . . __________________ Density:- Not just a measurement ~ It's a whole way of Life.! ! ! I drive a Volvo, Please Don't Get In My Way! OldVolvos4Ever He shows up. People die. He vanishes. People should not be afraid of their governments. "He'll deliver more justice in a weekend than 10 years of your Governments should be afraid of their people... "V" courts & tribunals. Just stay out of his way." "I plan to."

Nov 25th, 2015, 18:33	#2
kenny Master Member Last Online: Dec 16th, 2020 20:33 Join Date: May 2009 Location: kirknewton	I understand there is a known issue with battery drain due to a defect in the alarm system on this age of V70 and a temporary fix is to disconnect the fuse. Unfortunately this section is for the phase 3 model. If you repost in the correct section someone will be able to sort you out with which fuse to take out and on a permanent fix. Kenny

Nov 26th, 2015, 08:50	#5
robdcl New Member Last Online: Feb 20th, 2024 18:21 Join Date: Oct 2014 Location: London	Thanks very much for the info !

Nov 26th, 2015, 10:02	#6
Brendan W Premier Member Last Online: Apr 2nd, 2024 19:50 Join Date: Dec 2007 Location: Wexford	Alarm siren module definitely a prime suspect if it's the original. Usually if the siren is failing you will get random activations and the odd warning message. With the fuse out the remote still works , the alarm sets, the led flashes and the alarm system will detect intrusion but without the sound effects. You will also get an alarm service message at every start up. New unit is about £180 and is a fairly easy diy job. It's up in the drivers wheel arch. 100 mA is not a lot. You might want to get the battery and charging system tested. Another suspect is the alternator regulator/rectifier. They can short and drain current away.

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