Warmups and Cold Starts

[Bridgenix]

Hello! A week ago, we made a purchase and took delivery of a brand new 2025 Mazda CX 70 PHEV GS-L. This morning, the temperature here in the north dropped to -22 degrees Celsius, with a wind chill of -28 degrees. My Mazda app's remote start feature was ineffective when I attempted to use it. It started up OK when I went outside and turned it on. It still wouldn't enter EV mode when we got downtown. Then I usually just leave the engine running, but I just realised that you can't lock the doors while the engine is running.
I am wanting to know anything there is to know about operating in chilly weather.
Much obliged.

[Thenornpo]

It's going to be really chilly for your brand new CX-70 PHEV! I saw that you mentioned the app failed to start the remote at -22 C, but when I tried to start it manually, it worked perfectly. Did you get a detailed message from the app when it crashed? Other owners in colder climates may be able to offer advise if you share that information.

[Bridgenix]

It simply returned a "failed notice" without any accompanying error message.
I just found out that you can actually use the app's climate control to make the car warmer. That gets the job done, but doesn't it also heat up the petrol engine? A block heater is also not in my possession. Could that be a problem next winter?

[Mantelle]

Locking it while the car is running is possible. Did it just now? I prepared a video to show you. Excuse my disorganised living quarters. My return after a 1,000-mile road journey is imminent.

[Mantelle]