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[Zero ninja]

So last Saturday, after running up some dirt roads with a lot of spring run off on them, I got my 13' DS pretty muddy. When I took the bike home and sprayed all the mud off of it I noticed that I was now getting a warning light blinking. I looked up what the error code represented and it was the "BMS isolation fault" error. So I took a short video of the error and sent it in to zero support. They advised me that once the bike dried out the error would discontinue. Riding in to work today the error is still visible but showing up for less time. Just wanted to mention this to other owners to be carful when spraying water in the rear wheel well, near the BMS. I am going to be more careful how hard I spray water near the BMS in the future.
I did get to try out sending the fault logs to Zero via the app, works perfectly. Just a heads up when you was the bike for the first time.

Wade Perry
Tooele, UT
2013 DS 11.4

[Ittindi]

Quick noob question for future reference: What is the BMS?

[Zero.DS.Sweden]

Battery Management System

[BrianTRice@gmail.com]

I just received the 2013 DS from the dealer and asked them for specific places to be careful of, and they didn't know of any, so this may not be widely known/encountered yet.

[protomech]

I washed my 2012 yesterday with no problems. I did let the bike dry for about 15m before I switched it on.

[Rossi46]

Hi Fellow Zero guys, I got this from the manual.

Cleaning
WARNING! Improper cleaning can damage electrical
components, cowlings, panels, and other plastic parts. Do
not use high pressure water or steam cleaners; they can
cause water intrusion of bearing, seals, and electrical
components. Avoid spraying water of great force around
the instrument panel, power pack, or controller.
To prolong the life of your motorcycle it should be washed
periodically. Regular cleaning, is an important factor in
maintaining the value of your motorcycle. It also ensures
that safety relevant parts remain in full working order.
If tar, bugs, or other similar deposits have accumulated,
wash them off as soon as possible.
CAUTION: After cleaning and before starting your journey,
always test the brakes.
Washing
WARNING! Do not use any harsh chemical products on
plastic parts. Be sure to avoid using cloths or sponges
which have been in contact with strong abrasive cleaning
products, solvent or thinner, fuel (gasoline), rust removers
or inhibitors, brake fluid, antifreeze or electrolyte.
Note: We recommend the use of a garden hose to wash
your motorcycle. High-pressure washers (like those at
coin-operated car washes) can damage certain parts.
1. Gently wash your motorcycle with a sponge or a clean
soft cloth, mild detergent, and plenty of water.
2. Use care when cleaning the plastic parts (dash,
fenders, and side panels), which can scratch easier
than the other parts of your motorcycle.
3. After washing, rinse your motorcycle thoroughly with
plenty of clean water to remove any detergent residue.
4. Dry your motorcycle with a chamois or a soft, dry towel.
5. After cleaning, inspect for damage, wear or leaks.
After washing the motorcycle, allow all of the electrical
components to dry prior to operation. If the motorcycle is
ridden after being washed, apply both brakes several
times in order to remove any moisture from the brake
pads.
Wheels and tires
Avoid using strong acidic wheel cleaners, especially on
spoked wheels. If such products are used on
hard-to-remove dirt, do not leave the cleaner on the
affected area any longer than instructed. Also thoroughly
rinse the area off with water, immediately dry it, and then
apply a corrosion protection spray.
Do not use products such as tire dressings on tires as this
will deteriorate traction.

I spoke to the guys at Zero, it sounds like it could be an isolation fault, (was it rapid stobing?), as it drys it should go away. Avoid spraying water directly at orange leads, or where there are connectors? Sounds logical. I'd sent them your logs via a smart phone and get them check it out.
Hope this helps.
All the Best 46