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HardCharger

Member Since: 03 Mar 2013
Location: Manila
Posts: 744

2011 Defender 110 Puma 2.4 SW Stornoway Grey

Headlights Suddenly Turn On And Light Switch Off

Hi All!

Just encountered this peculiarity two days ago. Every now and then, once parking, turning off the switch to turn off the headlights, they go out momentarily but will come on again for a few minutes then turn themselves off. The position lights are obviously off at this point and it was very alarming at first.

Question now is, any idea what causes this so I can deal with it? The sparky that worked with it installed headlight relays a few days before the Land Reizinger kit then installed the kit on top if that. Been trouble free since installation a few weeks ago up until two days ago.

I can't deal with it right now but have an appointment with the sparky next week. So any suggestions will help so we can narrow things down when we meet.

Many thanks in advance! It's really never over in a Rover...

11th Aug 2016 4:36am

bpman

Member Since: 21 May 2008
Location: Oslo
Posts: 8069

2008 Defender 110 Puma 2.4 SVX Station Wagon Santorini Black

Have you upgraded your h4 lamps to a higher wattage? Sounds like your switch has partially melted

11th Aug 2016 4:47am

bear100

Member Since: 22 Mar 2010
Location: South Wales
Posts: 1945

2010 Defender 110 Puma 2.4 USW Santorini Black

Most likely the switch has melted, do a search on this site loads of info.
There are a few kits available to help with the issue, basically all the voltage to the lights goes through three light switch.

2023 Defender L663 V8
2016 Range Rover Autobiography 4.4 TDV8 (gone)
2010 110 XS Utility 2.4TDCI
2010 Range Rover Sport TDV8 (gone)
2007 Discovery HSE TDV6 (gone)
1993 110 csw 200 tdi (gone)
1994 90 HT 300 tdi (gone)
1994 discovery 300tdi (gone)
90 hybrid 3.5 v8 (gone)
Range rover bobtail 3.5 v8 (gone)

11th Aug 2016 12:13pm

HardCharger

Member Since: 03 Mar 2013
Location: Manila
Posts: 744

Hi All!

Still using standard wattage lamps, albeit they be Osram Nightbreaker Ultras.

I already have the Land Reizinger kit installed plus a redundant relays installed as well.

New switch was installed a few months back and with the wiring kits, I was presuming that this will no longer be a problem so what gives?

Since I'll have the steering cowls removed to check the ignition switch to eliminate this as a culprit for another issue I'm encountering, I'll let the sparky check the switch as well then.

If anyone else has any ideas, please do chime in. I see the sparky next week so it would be nice to hand him a list of possibilities to check. That, plus the earth cheat sheet for him to ponder over as well.

12th Aug 2016 2:13pm

Eduardo

Member Since: 28 Aug 2008
Location: Región Metropolitana
Posts: 2110

2007 Defender 110 Puma 2.4 SW Stornoway Grey

Check the relays of the new installation.
Happens sometimes in wet climates that the relays goes weird due water ingress.

Cheers and good luck Eduardo

MY 2007 110 SW PUMA 2.4: Big Fog of 64'
MY 1994 Jayco 1207 Folding camper: "El Tremendo"

Click image to enlarge

12th Aug 2016 2:16pm

bear100

Member Since: 22 Mar 2010
Location: South Wales
Posts: 1945

in that case swap the relay to test

12th Aug 2016 7:33pm

HardCharger

Member Since: 03 Mar 2013
Location: Manila
Posts: 744

Thanks for the additional tip, Eduardo and bear100! Will do!

15th Aug 2016 4:03am

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