RXV Shutting down for no apparent reason

[dgoede]

Rather strange event has happened a few times with my 2010 RXV. Running fine, out of the blue it just seems to shut down in forward. It's not a hard brake lockup but more like a power failure. Usually if i toggle key off/ back on I am back on my way. The last time this happened the key toggle didn't seem to do anything. Tow mode didn't disengage the engine brake either. When i did the wire switch by the controller this did disengage the brake release. I switched the plugs back to normal and the cart operated as normal. I noticed a voltage drop on the gauge to around 3/4 from full when this happens. Any ideas where to start looking for issues?