Hi, it was very cold outside and I started the car and enter right away into the garage and realise that I was not stopping normally because I have no power brake. My wife (her car) would have hit the wall no doubt since idle was also high... I read that some car can have sticky/frozen brake booster check valve. Ever heard of this on the CX-5 ? or heard of a delay for that vacuum pump on these cars? The brake assis came back after couple seconds. I know very well I should warm up the car at -25c but that is not the point! I could replace that hose including the valve but I just don't want to replace it for nothing... (but thinking now, no vac in booster means valve was not working correctly.. (the car did run fine the day before..)) Thanks.