Just wondering if anybody else is having cold weather(-15degrees celsius) problems with their locks. I notice i have to wiggle the key for a little while before i can unlock the doors. seems like there's never a problem locking them after driving. I have applied lock lubricant but it seems the same. The next time, I'm going to apply lock de-icer. it says spray then wait 30 seconds. think it gets rid of moisture or just applies heat?

Any other good solutions?

I'm also aware that there is a driver's door lock heater when the handle is lifted. Didn't seem to help today. Maybe it needed more time but I opened it with the usual wiggling of the key.