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  #11  
Old 09-21-2016, 02:08 AM
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Originally Posted by Fifty150hs View Post
10 cents of solder will solve your problem. After replacing three tail light assemblies. I found the solder fix, applied it to a problematic tail light assembly. Problem solved. Put a dab of solder on the tail light housing where the bulb housing rests. The problem isn't corrosion it's poor contact which causes shorting that damages the connection. The solder provides a better, solid connection. Problem solved. Ten cents.
This solution works well for the burnt bulb contact problem, which affects all model years.

There are significant differences in tail lamps wiring and operation between pre-facelift and facelift X5 models - unless you want a bunch of trouble, stick to lights designed for your year/model.
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  #12  
Old 09-21-2016, 08:05 AM
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what are the differences? do the facelift models have the rear fogs?
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Old 09-21-2016, 02:24 PM
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Originally Posted by wpoll View Post
This solution works well for the burnt bulb contact problem, which affects all model years.

There are significant differences in tail lamps wiring and operation between pre-facelift and facelift X5 models - unless you want a bunch of trouble, stick to lights designed for your year/model.
I wouldn't say significant. You literally have to swap four pins (takes a small watch screw driver and 3 minutes) and add a pair of capacitors to each light . The capacitors just clamp inline to two wires on each light assembly. Done and done.

As far as coding, you can turn off cold monitoring if you want, if not they'll just flicker the first second you turn in your lights. Youlll have a brake force error if you don't turn off the adaptive braking but it'll never throw an error on the dash nor will it effect anything.
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Old 09-21-2016, 03:54 PM
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Old 09-21-2016, 03:54 PM
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http://www.xoutpost.com/bmw-sav-foru...t-fix-diy.html
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I swear, my cars are like a girlfriend.
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Sometimes she doesnt like how i treat her and sometimes i dont like how she behaves.
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  #16  
Old 09-21-2016, 04:46 PM
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Originally Posted by Joshdub View Post
I wouldn't say significant. You literally have to swap four pins (takes a small watch screw driver and 3 minutes) and add a pair of capacitors to each light . The capacitors just clamp inline to two wires on each light assembly. Done and done.

As far as coding, you can turn off cold monitoring if you want, if not they'll just flicker the first second you turn in your lights. Youlll have a brake force error if you don't turn off the adaptive braking but it'll never throw an error on the dash nor will it effect anything.
OK, maybe saying the differences are significant is overstating it a little but... there are a number of critical differences in the electrical systems.

The pre-facelift tails use dual-filament lamps and normal 12v power to the lamps, from the LCM. The facelift models use single filament lamps that are dimmed by a PWM power system from the LCM - the single filament lamps are modulated to at least three different brightness levels, depending on the situation - normal tail light, first stage brake light and second stage brake light.

This is why you need to add capacitors to non-facelift LED tails when fitted to a facelift model- the PWM signal won't work with the LEDS properly without some sort of averaging circuit (a capacitor). This averaging is done by the tungsten filament in normal incandescent tail lights.

This PWM is nothing to do with cold-monitoring - although that is there too. The PWM system driving the tails cannot be controlled by coding - you would need to replace the LCM.
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  #17  
Old 09-21-2016, 04:50 PM
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ohhhhh yea the 04's & up have adaptive braking, that along is a huge difference in electrical.
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Old 09-21-2016, 05:23 PM
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ohhhhh yea the 04's & up have adaptive braking, that along is a huge difference in electrical.
It's actually 03 and up that have the adaptive braking. Many of us have LED taillights with no issues, including me.
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Old 09-21-2016, 05:26 PM
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not my '03

I don't think?
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Old 09-21-2016, 05:40 PM
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It's actually 03 and up that have the adaptive braking. Many of us have LED taillights with no issues, including me.
Change occurred at 10/03 so early 03's don't have it - late 03's do....

I didn't mean to infer that LED tails designed for pre-facelift cars won't work on facelift cars - just that unless you are handy with wires and a soldering iron (and are bloody careful!) it might be more than a mission for you. It's certainly not plug and play.

We've seen a few fried LCM (LKM) modules on this forum - although not due to the fitment of LEDS - and it's probably best to avoid cooking up your LCM (LKM).
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