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Tommyb520d

Headlights problem

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Guys,

I had a nearside dipped beam fault so as normal practice I changed both sides.

I now have dipped beam fault on both sides and lights come on for about 10 seconds then flicker and go out .

Has anyone any thoughts on this fault ..its halogen lights in my car 520d saloon. 

 

 

Cheers

Tommy 

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Hi Dr Taylor,

Not sure what you mean about anger the software?

Can you explain a bit more so I can try something..... a bit worried this might cost a lot of money to fix.

An independent bmw& mini garage in Glasgow said I might need two brand new headlights and I asked the guy why would I need new lights if they actually  come on and work ... although they only stay on for a short time ... I must admit I wasn't impressed by that statement especially as he only watched the lights coming on and then going off.

He never even mentioned things like  maybe a faulty  relay or faulty lighting control unit .... just jumped straight to maybe you need new headlights!! 

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The lighting control module is in the headlight..

 

Power is fed from another control unit.

 

The headlight control unit talks to the other control units in the car..

 

It's not as simple as a lightswitch in your house.

 

I have two control units for sale on eBay tms  modules..

 

350 new from bmw or used from me for 200..i upgraded to xenon headlights and have just sold my headlights..

 

The headlight modules are known to fail..

 

https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F282767957992

 

What you need to do is get Ista bmw software and it will tell you if you have a comms fault or any fault with your modules. 

You can't do much without software.

 

If you were local I could sort it out for you.

 

Edited by jkas1984

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As mentioned, start by getting any error codes read using ISTA or at a local BMW indi. this will hopefully give you a clue as where to go next. Don't start by buying replacement modules as this could be a costly exercise (unless they are needed of course) - if there are codes flagged I'd get an indi or a reputable auto electrician to take a look.  Have you checked the wiring for signs of damage or water ingress at the plugs and sockets?

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Did you put a decent make of bulb in?  My experience of BMWs tells me that they are quite fussy over what bulbs they want.  Cheap crap own brand stuff from Halfrauds doesn't work.  OEM bulbs like Osram, Bosch or Phillips work best.

 

Dr T speaks a slightly different language to most on here but he makes a good point in that its probably nothing to do with the lights themselves but the software or one of the many boxes of wizzardy that controls them, which is why you want to get it hooked up to a laptop with software to see if there are any codes lurking that might tell you whats wrong.

 

Stay away from that Glasgow independent, he sounds like he doesn't know what he is talking about.  Oh and don't go to Douglas Park in Glasgow either.

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Thanks very much for all the replies on this lads .... it's very much appreciated. 

I just need to find a good bmw mechanic or garage then and get it hooked up to the computer. 

 

So if anyone reading this post can recommend a good garage in Scotland please give me a shout.

 

Right now I need to go clean the car as the weather has left it filthy.. Can't have that .

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Thanks for the advice everyone, just back from Deuchtek garage  in charing cross Glasgow, the guy there paddy could not have nicer, he has got the lights working..although there is still a fault to be fixed with vertical aim control  so going to take it back to them as they were fully booked today .

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1 hour ago, Tommyb520d said:

Thanks for the advice everyone, just back from Deuchtek garage  in charing cross Glasgow, the guy there paddy could not have nicer, he has got the lights working..although there is still a fault to be fixed with vertical aim control  so going to take it back to them as they were fully booked today .

 

Any idea what the problem was in case there is another Halogen lighter on the forum that experiences the same?

 

Glad you've got working lights again - you really need them this time of year as we never seem to have real daylight!

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Paddy the mechanic said it could have the bulbs I fitted because they are brighter ones than the standard ones so he put in two new headlight bulbs and they are working now ... although  there is a fault with the lighting module which is located in the footwell somewhere and he is almost sure that's why vertical aim isn't working  .... so it's getting booked in to check it but he wants a good look at to see if he can repair anything rather than me having to but new parts. 

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4 hours ago, Matthew Ashton said:

Glad you've got working lights again - you really need them this time of year as we never seem to have real daylight!

 

You Southerners have it easier at this time of year, it only gets light up here after we have gone to bed up in these latitudes!

 

I work not far from Charing Cross I'll need to look out for that Indy.

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On ‎14‎/‎12‎/‎2017 at 9:55 PM, Tommyb520d said:

Hi Dr Taylor,

Not sure what you mean about anger the software?

Can you explain a bit more so I can try something..... a bit worried this might cost a lot of money to fix.

An independent bmw& mini garage in Glasgow said I might need two brand new headlights and I asked the guy why would I need new lights if they actually  come on and work ... although they only stay on for a short time ... I must admit I wasn't impressed by that statement especially as he only watched the lights coming on and then going off.

He never even mentioned things like  maybe a faulty  relay or faulty lighting control unit .... just jumped straight to maybe you need new headlights!! 

 

Hi.  Not an expert - but perhaps the control unit for the lights is overridden by some kind of software?  Matthew Ashton is the Daddy - he will sort this out.

 

If in doubt, however, why not try removing/replacing one blub at a time?

 

Sorry to give you hope!  Just spitballing here.  :o

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14 hours ago, 535i Andrew said:

Did you put a decent make of bulb in?  My experience of BMWs tells me that they are quite fussy over what bulbs they want.  Cheap crap own brand stuff from Halfrauds doesn't work.  OEM bulbs like Osram, Bosch or Phillips work best.

 

Dr T speaks a slightly different language to most on here but he makes a good point in that its probably nothing to do with the lights themselves but the software or one of the many boxes of wizzardy that controls them, which is why you want to get it hooked up to a laptop with software to see if there are any codes lurking that might tell you whats wrong.

 

Stay away from that Glasgow independent, he sounds like he doesn't know what he is talking about.  Oh and don't go to Douglas Park in Glasgow either.

 

"Speaks a different language".

 

Agreed - I err on the side of vague metaphor, in a bid to disguise my lack of actual, technical knowledge.

 

Some call this bovine effluent, but I call it 'the way of the moistened tongue'.

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I ran led lamps, xenon lamps and aftermarket osram halogen in my head lights with no problems. All proved poor.

 

Then I upgraded to full lci xenon retrofit.

 

Brilliant now.

 

If you have a faulty control unit "frm" is  the foot well module.

 

Just replace it..

 

Problem is more likely in the headlight..tms fault.

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If the garage is telling you he can fix something in the lighting control circuit ...i will be amazed.

 

These cars are not an old ford escort.

 

Water ingress causing failure on the tms card is common on the forums..

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