Boo71506

Member

• Mar 25, 2020

• #1

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

Well-Known Member

• Mar 25, 2020

• #2

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

 

blue beasty

Leaks an prone to bits dropping off

• Mar 25, 2020

• #3

300bhp/ton said:

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

Click to expand...

Corrected

 

Boo71506

Member

• Mar 26, 2020

• #4

300bhp/ton said:

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

Click to expand...

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

 

mick 1986

Well-Known Member

• Mar 26, 2020

• #5

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?.

Click to expand...

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.

 

S

Silvermane

New Member

• Apr 24, 2020

• #6

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

Well-Known Member

• Apr 24, 2020

• #7

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.