Cayenne biodegradable wires - Porsche Cayenne Forums : Porsche Cayenne Forum
 
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post #1 of 9 Old 03-05-2020, 06:42 PM Thread Starter
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Cayenne biodegradable wires

I've seen a few references to the wires going bad on a Porsche Cayenne because they are biodegradable.
This is typically seen in the headlamp wiring harness. Is this wiring issues something that affects all the wiring in the car?
I've only seen mention of it with regards to the headlamps. Is this only a headlamp issue? Or due to exposure/location are the other wires not
affected by the degradation?
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post #2 of 9 Old 03-06-2020, 02:06 PM Thread Starter
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Delete Me. Duplicate post.
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post #3 of 9 Old 03-11-2020, 08:19 PM
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Biodegradable wiring in a vehicle? I don't think so. They would be crazy to put wiring into a car that degrades, especially with vehicles staying in service longer and longer. And to the extent that cars are recycled and not put into landfills, that would be another reason not to need to use biodegradable wiring.

Wiring, where it has issues in any vehicle, is usually at the clips where the wiring attaches to the part. Moisture has an access point and can create corrosion, especially in climates where road salt is used for winter road maintenance.

I had an issue with my oil level sensor. Turns out it was corrosion in the wiring clip connection between the sensor and the wire. Cleaned the corrosion, problem solved.
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post #4 of 9 Old 03-12-2020, 03:55 PM Thread Starter
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Quote:
Originally Posted by iTradeShips View Post
Biodegradable wiring in a vehicle? I don't think so. They would be crazy to put wiring into a car that degrades, especially with vehicles staying in service longer and longer. And to the extent that cars are recycled and not put into landfills, that would be another reason not to need to use biodegradable wiring.
...
It's a real issue, not limited to Porsche.
https://us.autologic.com/news/automo...-deterioration

Hoovie of youtube mentioned it in his Porsche Cayenne video. Had the front lamp harness replaced.
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post #5 of 9 Old 03-12-2020, 05:33 PM
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I've seen this before , their not biodegradable. On Porsche headlamps the water gets into them and with the water and heat from lights it starts to make all the plastic coating crack and fall off and then you have bare wires.
My passenger headlamp needed new wires because of this exact reason.

The same thing will happen when you get the water under your carpets in the front from rainwater/ac unit.
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post #6 of 9 Old 06-25-2020, 05:07 PM
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Thanks for information!
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post #7 of 9 Old 10-28-2020, 03:18 PM
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I honestly understand the idea behind biodegradable wiring but honestly this is not very practical. Cars that cost so much should have decent wiring. It is the same with Apple charger cables or even in some apartments in the US. I have been having problems with my wiring in the apartment that I rented. I had lights go down on me in some of the worst possible time. I have been looking for a good electrician in the area and I was really surprised that there were so many in the area. I have been doing a lot of research and I came across his cool company that does electrical contractor work. I called them an arranged for a meeting. Hopefully the estimate will not be crazy high. (If you guys need an electrician you can check their website here: https://bates-electric.com/locations/charleston-sc/ ) Hopefully everything will go well.
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post #8 of 9 Old 10-29-2020, 01:38 PM
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Porsche bean counters(Accountants) urged engineers to use plant sterol-based, biodegradable wiring insulation in the early Cayenne years(2003-2010). This had severely adverse effects, as heat and cold cycling wrecked havoc to the wires. The insulation literally turned to powder and crumbled away, exposing bare, crossed wires, resulting in a myriad of random electrical gremlins. In fact, warranty component failures forced Porsche to return back to Butyl insulation. To learn more about this and other Cayenne anomalies - join my Facebook Cayenne support group:

https://www.facebook.com/groups/1628490004068635/
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post #9 of 9 Old 11-04-2020, 07:39 PM
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Recyclable? Yes, all parts are required to be recyclable, for all vehicles sold in Germany, and probably the EU.
Biodegradable? Probably not a design target.
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