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jennings

Member Since: 22 Mar 2023
Location: West Sussex
Posts: 11

Low Beam not working one side

Hi - My first time posting on the forum and also a recent first time Defender owner (2014/110SW).

I've noticed last night that the low beam on the drivers side isn't functioning but high beam is fine. It was all working a couple of weeks ago when I bought the vehicle.

I've taken the bulb out and all seems okay which I guess is expected if the high beam works. I've seen reference to relays but not sure where to find this as it sounded like this was different to what is in the fuse box under the seat.

I've assumed they are standard halogen lamps (wipac quadoptic written on lamp) but don't really know.

Any advice on where to be looking for a problem would be appreciated.

Thanks, Paul

27th Mar 2023 3:50pm

MK

Member Since: 28 Aug 2008
Location: Santiago
Posts: 2418

2007 Defender 110 Puma 2.4 SW Chawton White

https://www.defender2.net/forum/topic33868.html Puma 110" SW

.............................................................
Earth first. Other planets later

27th Mar 2023 3:54pm

jennings

Member Since: 22 Mar 2023
Location: West Sussex
Posts: 11

Thanks. I had seen this post but wasn't sure if the relay is the issue given the high beam is okay as well as the other headlamp as it looks like they would be shared.

27th Mar 2023 3:58pm

MK

Member Since: 28 Aug 2008
Location: Santiago
Posts: 2418

OK. Maybe a faulty bulb, terminal, etc. Try another bulb or test the contact. Puma 110" SW

.............................................................
Earth first. Other planets later

27th Mar 2023 4:06pm

DAZ110

Member Since: 06 Dec 2007
Location: East Sussex
Posts: 2039

2013 Defender 90 Puma 2.2 XS CSW Barolo Black

Have a look here, might be your problem?:

https://www.defender2.net/forum/topic2156....iring+loom

27th Mar 2023 4:34pm

jennings

Member Since: 22 Mar 2023
Location: West Sussex
Posts: 11

[edit] Found the main relay now (No#4 from link) and have checked that and looks fine as well.

Thanks for the replies. I ordered another set of bulbs anyway though figured if high beam was okay this probably isn't the issue as the bulb looked intact when I took it out (I'm assuming the filiment blows like a regular old fashioned bulb, but this is all new still)

I've had a look around the wiring as best I can and can't see anything obvious that suggests chaffing.

Regarding the fuses and relay side. I've checked the fuses for the low beam and they are fine.

Are there any other components to check outside of the wiring that might explain this? I read something earlier here about separate relays but not sure where to find these.

I have the haynes manual which includes a wiring diagram. To my novice eye I can see the fuses but nothing else inline. Unless the relay is the box shaped thing that plugs direclty into the lamp?

Thanks. Paul

27th Mar 2023 5:47pm

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 17417

2007 Defender 110 Puma 2.4 DCPU Stornoway Grey

To start with, simply swap the bulbs over between the headlamps. If the fault moves, the bulb is at fault, if the fault stays put, the vehicle wiring is at fault.

There are relatively few wiring or component failures which will affect only a single headlight, so it is most likely to be the bulb, the connector on the back of the bulb, or the wing harness.

27th Mar 2023 6:00pm

jennings

Member Since: 22 Mar 2023
Location: West Sussex
Posts: 11

Was the bulb, doh! I clearly don't know how check the bulb properly.

Thanks all for help.

27th Mar 2023 6:39pm

jennings

Member Since: 22 Mar 2023
Location: West Sussex
Posts: 11

Looks like I spoke to soon. When I swapped the bulbs it worked but just gone out to start up and now no headlights at all. Presumably what every caused the other bulb to blow has now blown this one.

Think it will be a trip to the garage tomorrow.

27th Mar 2023 8:21pm

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