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Hi all,

I have no past experiences of Xenon lights however I was under the impression they do last a while.

My vehicle a "56 plate" GS450h which I've had since new and has only covered 25k has an issue with the driver's side headlight.

When I turn on the light, it turns on for less than a second then goes off. The passenger headlight stays on as normal. I was about to purchase a brand new bulb but don't really fancy doing so unless I know it is the bulb that has gone.

Has anyone else had this problem before? Does it need a new bulb?

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Hi all,

I have no past experiences of Xenon lights however I was under the impression they do last a while.

My vehicle a "56 plate" GS450h which I've had since new and has only covered 25k has an issue with the driver's side headlight.

When I turn on the light, it turns on for less than a second then goes off. The passenger headlight stays on as normal. I was about to purchase a brand new bulb but don't really fancy doing so unless I know it is the bulb that has gone.

Has anyone else had this problem before? Does it need a new bulb?

Hi, I don’t know much about the headlight bulbs in these cars, only that they cost a small fortune to replace if you take it to a Lexus dealer. But I have read on this sight somewhere about the “ starter “ apparently this is a unit that like a gas ring starter on a cooker that lights the headlight bulb, so I would think that as your bulb does come on then of again that it cant be the bulb, so perhaps it this starter thing, or perhaps a connection of some sort, I am sure some one here can help you better than me. Hope this may help in some way.

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The "starter" is in fact the ballast unit which on start up provides a high voltage to strike an arc within the bulb. Once the bulb has lit the voltage is reduced to maintain the arc and therefore maintain the light output.

I would try as you suggest swapping the bulbs around as there have been other cases of failure.

If you do confirm it is the bulb they are available from sources other than Lexus for a fraction of the cost.

These are for a pair

http://www.hids4u.co.uk/d2r-xenon-hid-bulbs/

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Thanks guys,

I swapped them around and believe it is the bulb itself. I'm not too impressed with the bulb going this quickly on the car.

I'm going to see if I can source the bulb locally tomorrow. However, I have found the following suppliers which seem good value.

http://www.autobulbsdirect.co.uk/philips-d4s-oem-replacement-xenon-hid-bulbs.html £46

http://www.ebay.co.uk/itm/Philips-D4S-XenEco-42402-Xenon-HID-Replacement-Bulb-Toyota-Lexus-IS250-4300K-OEM-/280792038578?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item4160827cb2 £61.50

http://www.convert2xenon.co.uk/xenon-hid-bulbs/557-philips-d4s-hid-xenon-replacement-bulb-42402.html £55

http://www.xenons4u.co.uk/hid-xenon-bulbs/17-philips-d4s-xeneco-42402-xenon-bulb.html £50 + PP

Hope the above helps..

Cheers again

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