went and started the car last night, and BOTH the auto headlapms didnt come on, so i tried to put them on manually, but still no joy
its just BOTH the side lights that come on,
BOTH the spot lights come on,
the lights go off when ignition is turned off,
i looked in the fuse bay next to the glove box, and dont see a sign for headlights
is there a fuse for them?
and what is the remote chance off both bulbs going POP t the same time
the car is a 1.4 52plate meganeII petrol,.
headlamps stopped working
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Re: headlamps stopped working
According to the wiring diagram there is no fuse in the glovebox for the headlamps - they are in the engine multiplex module.
It's possible that both bulbs have gone at the same time (but unusual).
I must say I'm a bit puzzled by this. Both head lamp units share the same earth point and besides sidelights, headlights and main beam are all earthed through a common connection. Since you say the side lights and main beam work it cannot be an earthing fault.
The other odd thing is that both headlamps are fused separately by fuses F8B and F8C in the engine multiplex module. It would be very odd if they both went at the same time too.
Unless I'm missing something, I would check the bulbs first. The engine multiplex module (on the 03 1.9 model at least) is difficult to get at. From memory I think you have to to remove the battery and tray and maybe the ECU. Then there are a lot of fuses and I'm not sure if they are marked, so you will be checking a lot of things and spending a long time on the job.
It could be the switch or loom or automatic lights circuit that is to blame. Best check the online manual links section for further information (I have never mastered it).
Do any other lights malfunction?
It's possible that both bulbs have gone at the same time (but unusual).
I must say I'm a bit puzzled by this. Both head lamp units share the same earth point and besides sidelights, headlights and main beam are all earthed through a common connection. Since you say the side lights and main beam work it cannot be an earthing fault.
The other odd thing is that both headlamps are fused separately by fuses F8B and F8C in the engine multiplex module. It would be very odd if they both went at the same time too.
Unless I'm missing something, I would check the bulbs first. The engine multiplex module (on the 03 1.9 model at least) is difficult to get at. From memory I think you have to to remove the battery and tray and maybe the ECU. Then there are a lot of fuses and I'm not sure if they are marked, so you will be checking a lot of things and spending a long time on the job.
It could be the switch or loom or automatic lights circuit that is to blame. Best check the online manual links section for further information (I have never mastered it).
Do any other lights malfunction?
Silver 08 plate 5dr 1.5dci Dynamique 106 Tech Run (re-mapped)
Red 03 plate 5dr 1.9 Dynamique dci120
Best advice for Megane owners: sell it before it bankrupts you!
Red 03 plate 5dr 1.9 Dynamique dci120
Best advice for Megane owners: sell it before it bankrupts you!
Re: headlamps stopped working
I had both blubs blow on mine at the same time when it was in the dealer being serviced, or so they told me!! When I questioned what were the chances of them blowing at the same time I was told it was more common that you might think.
megane cc 106dci 57reg quartz
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Re: headlamps stopped working
davelowe wrote:According to the wiring diagram there is no fuse in the glovebox for the headlamps - they are in the engine multiplex module.
It's possible that both bulbs have gone at the same time (but unusual).
I must say I'm a bit puzzled by this. Both head lamp units share the same earth point and besides sidelights, headlights and main beam are all earthed through a common connection. Since you say the side lights and main beam work it cannot be an earthing fault.
The other odd thing is that both headlamps are fused separately by fuses F8B and F8C in the engine multiplex module. It would be very odd if they both went at the same time too.
Unless I'm missing something, I would check the bulbs first. The engine multiplex module (on the 03 1.9 model at least) is difficult to get at. From memory I think you have to to remove the battery and tray and maybe the ECU. Then there are a lot of fuses and I'm not sure if they are marked, so you will be checking a lot of things and spending a long time on the job.
It could be the switch or loom or automatic lights circuit that is to blame. Best check the online manual links section for further information (I have never mastered it).
Do any other lights malfunction?
everything else is working fine,
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Re: headlamps stopped working
bucky wrote:I had both blubs blow on mine at the same time when it was in the dealer being serviced, or so they told me!! When I questioned what were the chances of them blowing at the same time I was told it was more common that you might think.
ill have to check the bulbs 1st then
what kind are they? h2? h3? h4?
Re: headlamps stopped working
H7 at a guess.
Silver 08 plate 5dr 1.5dci Dynamique 106 Tech Run (re-mapped)
Red 03 plate 5dr 1.9 Dynamique dci120
Best advice for Megane owners: sell it before it bankrupts you!
Red 03 plate 5dr 1.9 Dynamique dci120
Best advice for Megane owners: sell it before it bankrupts you!
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MGB GT 1798cc 1970 - Location: Carshalton, Surrey
Re: headlamps stopped working
Yep, check the bulbs first (assuming you can get to them...)
I had both bulbs go at the same time, much to my disbelief, and I know of others who have as well.
I do wonder though if perhaps one had gone and I hadn't noticed, then the other went some time later. Much more noticeable when there's no light at the front!
I had both bulbs go at the same time, much to my disbelief, and I know of others who have as well.
I do wonder though if perhaps one had gone and I hadn't noticed, then the other went some time later. Much more noticeable when there's no light at the front!
2004 Megane 'Sport Tourer' 1.6vvt (the one with all the problems! but to be fair has never let me down and is currently driving beautifully.......)
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Re: headlamps stopped working
Is it true that when one bulb goes it puts stress on the other bulb as less resistance for the power?.
Alan
Alan
Megane CC 1.6vvt and 1.4 clio
Re: headlamps stopped working
dougieCC wrote:Is it true that when one bulb goes it puts stress on the other bulb as less resistance for the power?.
Alan
I don't think so. The alternator should have a constant output voltage and the bulbs are wired in parallel not series, so there should be no measurable difference in resistance that each bulb sees. It follows that each bulb will only receive the same power (V x I) compared to when any number of bulbs are connected.
Silver 08 plate 5dr 1.5dci Dynamique 106 Tech Run (re-mapped)
Red 03 plate 5dr 1.9 Dynamique dci120
Best advice for Megane owners: sell it before it bankrupts you!
Red 03 plate 5dr 1.9 Dynamique dci120
Best advice for Megane owners: sell it before it bankrupts you!
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Re: headlamps stopped working
davelowe wrote:dougieCC wrote:Is it true that when one bulb goes it puts stress on the other bulb as less resistance for the power?.
Alan
I don't think so. The alternator should have a constant output voltage and the bulbs are wired in parallel not series, so there should be no measurable difference in resistance that each bulb sees. It follows that each bulb will only receive the same power (V x I) compared to when any number of bulbs are connected.
Aaargh so garages tell lies
Alan
Megane CC 1.6vvt and 1.4 clio
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Re: headlamps stopped working
well, they said that both headlamp bulbs had blown
got it sorted now tho
got it sorted now tho
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