Defender 90 2010 Headlight Problem

Boo71506 · Mar 25, 2020

I havea defender 90 2010 tdci. When I turn on my side lights my headlights come on. 1st position nothing all off. 2nd side lights, rear, and HEADLIGHTS are on, then 3rd all the same but headlights are slightly brighter. If I remove the illumination/clock fuse F20 it fixes the problem and it back to normal.
I have also done some tests and the light swith is not the problem. Any ideas?.

300bhp/ton · Mar 25, 2020

Why have you posted the same topic 3 times in different parts of the forum????

blue beasty · Mar 25, 2020

300bhp/ton said:
Why have you posted the same topic 3 times in different parts of the forum????

Corrected

Boo71506 · Mar 26, 2020

300bhp/ton said:
Why have you posted the same topic 3 times in different parts of the forum????

Sorry first time using the Forums not sure the best way to do it.

mick 1986 · Mar 26, 2020

Boo71506 said:
I havea defender 90 2010 tdci. When I turn on my side lights my headlights come on. 1st position nothing all off. 2nd side lights, rear, and HEADLIGHTS are on, then 3rd all the same but headlights are slightly brighter. If I remove the illumination/clock fuse F20 it fixes the problem and it back to normal.
I have also done some tests and the light swith is not the problem. Any ideas?.

That sounds like dim/dip, but I don’t think the pumas had it, so I’m not sure. Search for dim/dip, and then see if you can find the relay.

Silvermane · Apr 24, 2020

OP- did you get anywhere with this? I had an MOT failure on this exact issue last year- resolved by removing the interior lighting fuse for the retest. I'd like to effect a permanent repair, but I have neither the skill nor the patience to trace what I presume is an earth fault if someone far cleverer has already done it!

FlyingPete · Apr 24, 2020

Dim dip relay is the culprit. It's an old feature which got carried over to some 2.4tdci models. It passes voltage to the low-beam filaments through a resistor when the ignition and sidelights are on, the idea being that you use them in built-up areas with street lighting. It shouldn't be an MOT failure either!

To disconnect it, the simplest way is to find the plug for the resistor (2-pin econoseal, in the engine bay under the right-hand wing) and unplug it. Longer term you can disconnect the pink relay behind the dash and bypass it with a wire.

Defender 90 2010 Headlight Problem

Boo71506

Member

300bhp/ton

Well-Known Member

blue beasty

Leaks an prone to bits dropping off

Boo71506

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mick 1986

Well-Known Member

Silvermane

New Member

FlyingPete

Well-Known Member

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