Their was a recall regarding the cable that runs behind dash and glove box. I believe it Is all lhd so yes Canada should have the issue. What MY and chassis is your car I'll see if I can get info if campaign covers you in Canada
People were having their cars burn down cause of the short from battery cable recall I was referencing. Reading high voltage is confusing though. That was an internal reading from cars sensor or a voltmeter connected to car?
A while ago I had the voltage regulator go bad in my 2007 335i, dashboard lit up like a Christmas tree. Trans light and everything. When the voltage goes over about 16v, the water pump shuts off (and I'm sure other things as well). Get a multimeter and make sure your voltage is in spec.
Can confirm on the voltage regulator whackyness, mine had the added benefit of acutally igniting the blower motor wiring when it went (along with the super awesome shut down the water pump on the express lanes and every light possible) lol
Replaced the reg and voltage went back to.normal instead of the 16-19v it was trying to put out.
Dead alts usually whine, squeak, and have low output.