General Category > Central Vehicle Electronics/ZFE/GM issues

2015 R1200GSA LED Intermittent Light Issue

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WayneC:

--- Quote from: r80 strider on April 28, 2018, 01:32:46 AM ---Upon inspection, the lighting control unit on the bottom of the headlight has somewhat of a bulge to it, not unlike a cell phone battery that has gone bad.
--- End quote ---

Electrolytic capacitors used for power stabilisation and smoothing can bulge when they fail, they may also operate for a while and fail when wam

We have power capacitors in the 650GS Dash assembly failing with age and the symptoms can at times seem odd, suggest looking inside the unit

r80 strider:
Wayne ... thanks for jumpin' in! I'm in unfamiliar territory with this device. Is there someone you could point me to for an analysis? Are these units repairable? Just replaceable?

While I've labeled some of the behavior I've had addition symptoms within the scheme of behavior that truly is weird.

One of the reasons I've come to the conclusion about this module is what I've read concerning the consistency of the ZFE ECU and the other controllers in use on the bike.

Appreciate your participation.

Best ... Dave

WayneC:
Dave, afraid I cant be of much assistance re your specific ECU, it was just your description of the bulge which caught my attention as it is the first thing we would look for on electrolytic capacitors in electronics regardless of whether it is an ECU or a PC etc

I mainly stick to the 650GS where we know the fault in the dash capacitor and BMW admitted very early on that the BMSC Engine ECU had a capacitor which was failing as well. I did look at a ZFE off a 1200 for an independent workshop a while back, unfortunately the way it was constructed meant it was professionally unrepairable so we wrote it off & looked inside as it had an internal rattle which turned out to be an electrolytic capacitor whose solder legs had fractured and released from the pcb. I soldered in another and the repairer tried it as an emergency unit but there were other problems caused by the capacitor failure. Lesson learned and a laugh for us both

One thing I did notice about the ZFE was that due to location on the bike and an open breather there was corrosive wastage of pcb tracks

r80 strider:
Thanks for the quick reply. Well like many others before me I'm going to throw money at it. I've done MY best to narrow it down to what I think it is.

I can't find a replacement module for less than a third of what a like new complete headlight unit costs so I've bit the bullet and bought a complete headlight. I MAY swap out the headlight's control module to see if that is indeed the cause of my issues after making sure the new headlight solves my issues. I'm only going to do that 1.) for curiosities sake and 2.) to try and recoup some of the cash I'm laying out.

Electrical concerns are far outside the scope of what I feel comfortable with. In addition to the above I may take my old module apart if I can do it without being so destructive that I won't gain anything from it.

Anyway I'll keep the thread updated with my findings. I'm hoping for a positive outcome.

Jughead:
Herewith LC wiring for the light circuit.

If you can forward me your email address I can email you a better, scanned copy.  File size is restricted as an attachment in this post.

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