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| JWL Member Since: 26 Oct 2011 Location: Hereford Posts: 3443   
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Most probable cause would be the light switch breaking up internally. With the ignition switch off you wouldn't get headlights to come on anyway even if it is working properly, i.e. if you stop the engine with all the lights on when you turn the key off you are left only with the sidelights. If you turn the key to position II then all the lights are on even if the light switch is in the sidelights only position? Pretty much points to the weak link.......the light switch, easily replaced.
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25th Jun 2014 10:54pm |
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| PaulMc Member Since: 17 Jan 2009 Location: Kent Posts: 501  
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It's a system called 'Dim-Dip' - it doesn't allow you to drive with just the sidelights on. With sidelights selected on the main lighting switch, once the engine starts, it powers the dipped beams on a reduced power. It's a system that Land Rover put in place to meet an EU lighting regulation that never was. It's not a legal requirement, or an MoT testable item - there's lots of info on here and other forums, on how to disable or by-pass it. On a TD5 of your age, Dim-Dip will be implemented using a Pink relay behind the instrument cluster, and a large resistor mounted to the RH inner wing. . Paul. 1989 Arles Blue 2.5TD 110 Hardtop 1999 Epsom Green Discovery II 4.0 V8i 'XS' |
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25th Jun 2014 11:08pm |
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| mrd1990 Member Since: 16 Aug 2012 Location: Wales Posts: 600  
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I believe there is a resistor in the wiring that gives a very limited amount of current to the headlights with position 1. That resistor might have failed and is just giving full current to the headlights.. it is disabled via relay when you take the key out which is why only the sidelights stay on.
It is located under the inner wing so bonnet up! You can disconnect it to disable headlights on position 1 but check that position 2 still works 
Absolutely no point in keeping it.. edit: what PaulMc said! |
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25th Jun 2014 11:18pm |
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| dancerdave Member Since: 14 Mar 2014 Location: N Ireland Posts: 80 
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Many thanks guys
That's why I love this forum |
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26th Jun 2014 8:15am |
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| K9F Member Since: 12 Nov 2009 Location: Bournemouth Posts: 9610 
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You learn something new every day.
I never knew about that feature. If you go through life with your head in the sand....all people will see is an ar5e!!
Treat every day as if it is your last....one day you will be right!! |
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26th Jun 2014 8:52am |
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| JWL Member Since: 26 Oct 2011 Location: Hereford Posts: 3443
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Ah, you didn't say that the headlights were on but at a reduced brightness with the engine on, if the headlights are at full brightness and you don't have dim dip fitted, not all do, then my previous statement is a likely cause.
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26th Jun 2014 8:54am |
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| mrd1990 Member Since: 16 Aug 2012 Location: Wales Posts: 600
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I think the ultra dim dip with position 1 and the resistor is barley noticeable until the resistor fails and lets out full current.
With my old L322, when the blower motor resistor failed, the fan came on at full power which is why it appears the headlights are properly coming on  |
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26th Jun 2014 12:31pm |
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| jimbob7 Member Since: 06 Jul 2013 Location: uk Posts: 2055 |
I recently disconnected my dim dip,lift bonnet, tucked under O/S, wing near brake M/C, I didn't know I had it till it started playing up. Eventually only had dip beam, couldn't only have the side lights on.Some people rewire the relay,dont know why if you can just unplug the resistor?? Pov.spec,ftw. 2006, 110,TD5.
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26th Jun 2014 3:09pm |
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