Are you getting more of a sulfur smell? If so likely a fuel quality issue, not unusual to get smells under load climbing hills since the programming is not always 100% depending on where you live altitude wise, weather etc. I live at 2200ft above sea level and all my vehicles suffer from this...
We had freezing rain yesterday and similar experience with Safety systems. This is an issue everytime there is snow, ice, rain. I wish engineers would figure out a way for the driver to acknowledge and then ignore because you can't change the weather.
I hear similar complaints from drivers of...
Mine does the same, im in 4x4 a lot this time of year. Dealer checked once last winter but difficult to replicate so im going to revisit this issue in the new year when I book in my recall fix on the brake hoses and a couple other outstanding issues.
Maybe it's our lovely -40c Alberta winters...
They haven't done anything since initial inspection. As we are in the winter months now it is very difficult to diagnose so we agreed to re-visit in the spring. I'm still waiting to get my outstanding recalls completed.
2024 Sport Premium, going into second winter in Northern Alberta, no issues at all. Plug it in below -20c recommended or like most vehicles it might get cranky.
Newer models use 75W synthetic product for the t case. I confirmed this with the shop lead at my dealer.
Toyota has a lock on this product, no aftermarket option available in Canada.