[Audi Junkie]

I would hose down that open connector with rubber undercoating spray, or maybe dab it with liquid electrical tape. Make sure its' cleaned first with contact cleaner or brake cleaner.

 

[Audi Junkie]

Not sure about that advice.
I was expressly warned at the time of purchase not to use any kind of spray rust proofing because that would void the hybrid warranty. However, if the harness isn't covered then where does that leave you?

I purchased the Electronic Corrosion Control (ECC) module which has a lifetime corrosion warranty but that is only for body panels. Not sure it would cover electrical even though it isn't excluded in the fine print.

Well, I wasn't talking about a theoretical or passive approach, I meant a physical and literal way to fix it. I've used plenty of rubber coat restoring cars, and the wiring too. On a bunch of bare wires, with iffy metal connections open under the car, don't you think some protection would work better than none (in the physical world?)

If I was out of warranty, I would disassemble the connector, light spray the metal connectors, WD is made for this. Then I'd splay the wires apart, clean with electrical connector or brake cleaner (not WD) and give them all a nice coat of premium rubber spray, emphasis on the transition from wire jacket to connector, filling any gap.

Then reassemble with 1 or 2 nice weep holes drilled in the bottom of the cover, about 1/2 inch. That would be my approach. I do work with a BOSCH Service Center, I'm not a n00b.

 

[Audi Junkie]

I would hose down that open connector with rubber undercoating spray, or maybe dab it with liquid electrical tape. Make sure its' cleaned first with contact cleaner or brake cleaner.

I meant to say, not the "open" connector, but the wires all opened up individually as shown with the upgraded cover. Their plastic sheathing isn't made for that kind of exposure.

Thinking about it, there is the silicone self-fusing tape that you could use to wrap the loose wires better. But then you could have water ingress thru the ends of the bundles. Suspension bridges have this problem, no way to seal the wire bundles. I like the spray better for this reason, but it's worth protecting those wires with a wrap as well.

It is an awesome product though...

Amazon.com: Nashua 1 in. x 10 ft. Stretch & Seal Self-Fusing Silicone Tape in White : Industrial & Scientific

Amazon.com: Nashua 1 in. x 10 ft. Stretch & Seal Self-Fusing Silicone Tape in White : Industrial & Scientific

smile.amazon.com