 | Home > Technical > Alarm sounding when starting, after periods of inactivty |
 
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| kmac Member Since: 07 Oct 2009 Location: Middlesex Posts: 1294   
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When you turn over the engine the battery voltage drops so the alarm sounds as it thinks the battery has been disconnected.
Main battery must be losing charge - keep it topped or replace, |
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13th Jan 2020 9:40pm |
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| Galyman Member Since: 20 Jan 2016 Location: Scottish Borders Posts: 86  
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Cheers kmac.
Taking it out on an extended run tomorrow so will give it a decent charge. Will then turn over daily and see if the it is losing charge relatively quickly or just when left for long periods if time. |
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13th Jan 2020 10:04pm |
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| rockhound42 Member Since: 24 Jun 2015 Location: where Surrey meets Sussex Posts: 38 
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I had a similar issue and after lots of head scratching found a bad bulb causing a short and draining the battery quicker than normal, bulb fixed and no more problems still running fine on the same odyssey pc1500 5 years later
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20th Jan 2020 12:53pm |
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| Galyman Member Since: 20 Jan 2016 Location: Scottish Borders Posts: 86
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Any tips for getting to the bottom of what was causing the battery drain?
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21st Jan 2020 9:51pm |
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| andydef90 Member Since: 09 Feb 2015 Location: yorkshire Posts: 617 
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how old is the battery ? you could have a load test on it used to be free at Halfords just don't buy a battery there if you need one
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25th Jan 2020 9:02am |
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 5416 
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For your info
If you talk to Oddesy they will tell you to, at least once a year take the out of the system and give them a full bench charge with a quality charger such as a ctek charger. It certainly helped mine when I did what was recommended |
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25th Jan 2020 9:32am |
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| Galyman Member Since: 20 Jan 2016 Location: Scottish Borders Posts: 86
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Andydef90 - Both batteries are about 4 years old.
landyandy - will look at getting both of them charged up. |
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25th Jan 2020 9:53pm |
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| nidge n Member Since: 04 Feb 2012 Location: Cheshire Posts: 714 
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I have two Defender 2.2. One used every day, the other once a week at best. Both turnover quickly and start immediately. I get a alarm, often on both, sounds like a bird whistling ( no birds were harmed in the writing of this thread) is this the alarm to which you refer as I’ve often wondered what it is.
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26th Jan 2020 10:02pm |
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| kmac Member Since: 07 Oct 2009 Location: Middlesex Posts: 1294
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The hard way - remove all fuses and start putting them back one by one whilst measuring if there is any draw on the batter |
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27th Jan 2020 8:51pm |
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| Supacat Member Since: 16 Oct 2012 Location: West Yorkshire Posts: 11018 
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Or one of the current draw tools from this thread:
https://www.defender2.net/forum/post810324...ley#810324 |
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28th Jan 2020 7:07pm |
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| Galyman Member Since: 20 Jan 2016 Location: Scottish Borders Posts: 86
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Hmmm, using the tool seems to be a less laborious option.
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19th Feb 2020 9:02pm |
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| Supacat Member Since: 16 Oct 2012 Location: West Yorkshire Posts: 11018
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Wow, that was an extended run.
😉 |
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19th Feb 2020 10:52pm |
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| Galyman Member Since: 20 Jan 2016 Location: Scottish Borders Posts: 86
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Kind of lost track of time. Battery or batteries do need a charge. Any suggestions for a charger and whether it can be done in situ or better to remove them and charge indepently?
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19th Feb 2020 10:56pm |
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| Supacat Member Since: 16 Oct 2012 Location: West Yorkshire Posts: 11018
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Have a search for CTEK on here will find you a range of options; including some of the best kit for charging insitu.
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20th Feb 2020 7:51am |
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