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df1



Member Since: 06 Aug 2011
Location: Ireland
Posts: 221
Occasional Battery Drain
I have a TD5 110 and it seems to randomly drain the battery overnight.

It could be alright for months at a time and then just out of the blue I come out some morning I come out and completely flat.

I tried tracing it through using a multimeter on the battery positive lead and pulling each fuse to see if there is a drain on one particular item - no luck.

It seems to just drain the battery and then if I jump it it'll be OK, just an intermittant problem.

Could a relay act up this way ? Or any other suggestions, I'm heading off on a trip in a month so would like to solve the problem before this.
Post #97686 2nd Nov 2011 2:02pm
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drewster



Member Since: 13 Jun 2011
Location: south coast brockenhurst
Posts: 226
Wales 1997 Defender 90 300 Tdi CSW Epsom Green
you are right you could have a sticky relay do you have heated seats ?
rear screen?or front screen?
Post #97694 2nd Nov 2011 2:34pm
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leeds



Member Since: 28 Dec 2009
Location: West Yorkshire
Posts: 8581
United Kingdom 
or sticky relay on glow plugs?

Brendan
Post #97709 2nd Nov 2011 3:39pm
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df1



Member Since: 06 Aug 2011
Location: Ireland
Posts: 221
There's a heated rear screen. Could this be it ?

If the glow plug relay was sticking should the pilot light illuminate on the dash ?
Post #97734 2nd Nov 2011 5:37pm
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BigMike



Member Since: 13 Jul 2010
Location: Lancashire
Posts: 2253
United Kingdom 
Assuming you have electric windows check the contacts and cables and switches. Also check your main earth strap and overall have a good look at the battery and its connections/cables.
Post #97736 2nd Nov 2011 5:41pm
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cradgebank



Member Since: 30 Dec 2008
Location: Nottingham
Posts: 308
England 2008 Defender 110 Puma 2.4 XS CSW Stornoway Grey
Bad plate in the Battery ??? Richard

Either a 90, 110 or 130.
Discovery 5
Post #97762 2nd Nov 2011 7:11pm
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wslr



Member Since: 18 Jul 2010
Location: Wellington, Somerset
Posts: 581
United Kingdom 
It could be a sticking brake switch on the master cylinder.
Post #97791 2nd Nov 2011 8:39pm
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df1



Member Since: 06 Aug 2011
Location: Ireland
Posts: 221
Thanks for all the input so far, I'll have a try of these this evening.

Can the likes of the brake light switch flatten the battery even when the ignition is off ?
Post #97912 3rd Nov 2011 3:09pm
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AndrewS



Member Since: 10 Apr 2007
Location: Hereford
Posts: 3707
United Kingdom 2013 Defender 130 Puma 2.2 SW Rimini Red
leeds wrote:
or sticky relay on glow plugs?

Brendan


Gets my vote Thumbs Up 130's have feeling's as well you know Smile
Post #97949 3rd Nov 2011 6:29pm
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df1



Member Since: 06 Aug 2011
Location: Ireland
Posts: 221
I think I might have found the problem (not sure).

If I leave the radio on when I stop it seems to drain the battery.

The radio seems to switch off when I turn off the key all right though.

When I tried it by leaving the radio on the battery flattened, could this be coincidental ?

It's a single disk CD player type.
Post #98398 6th Nov 2011 10:54am
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leeds



Member Since: 28 Dec 2009
Location: West Yorkshire
Posts: 8581
United Kingdom 
A radio draining a battery overnight?

Say 16 hours and typical 68 Amphr battery taken down to say 1/3 DOD would mean your radio is drawing about 3 amps per hour.

Seems to me to be rather a arge current draw for a radio which is nominally off

Possible I suppose if your battery is on the way out, but I think I would carry on looking for other reasons.

Brendan
Post #98402 6th Nov 2011 11:09am
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df1



Member Since: 06 Aug 2011
Location: Ireland
Posts: 221
Kinda thought as much but just wasn't sure, thanks for the pointers.

Removed the relay for the rear window heater yesterday, so I'll see how that goes for a while.
Post #98403 6th Nov 2011 11:11am
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df1



Member Since: 06 Aug 2011
Location: Ireland
Posts: 221
leeds wrote:
or sticky relay on glow plugs?

Brendan


Which relay is for the glow plugs ?

Is it the small relay in the ECU compartment ?
Post #99676 13th Nov 2011 1:04pm
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df1



Member Since: 06 Aug 2011
Location: Ireland
Posts: 221
I removed one of the relays under the seat, which appears to be causing the drain.

The relay is AMR 3773

After doing this the following fault codes showed up:

10-6 MIL Lamp drive open load - LOGGED
10-7 Glowplug Lamp Drive Open - LOGGED.

Does this mean anything to anyone ?

Last edited by df1 on 14th Nov 2011 7:03pm. Edited 1 time in total
Post #99851 14th Nov 2011 11:21am
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JSG



Member Since: 12 Jul 2007
Location: Berkshire
Posts: 2412
United Kingdom 2011 Defender 110 Puma 2.4 XS CSW Stornoway Grey
df1 wrote:
I removed one of the relays under the seat, which appears to be causing the drain.

The relay is AMR 3778

After doing this the following fault codes showed up:

10-6 MIL Lamp drive open load - LOGGED
10-7 Glowplug Lamp Drive Open - LOGGED.

Does this mean anything to anyone ?


I'm guessing that is the glow plug relay from the fault codes. Try a new relay in there and see if it solves the problem. John

http://www.hampshire4x4response.co.uk

2011 Tdci 110 CSW XS
Post #99865 14th Nov 2011 12:13pm
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