2003 volvo v40 cold start brake failure on cold winter mornings, when temperature is below freezing, after the engine is started and as i back out of my garage, the brake is so weak that i cannot effectively stop the vehicle. i would need to press the brake pedal as hard as i can and the car would stop in about a full car's length. it's quite scary. the problem always goes away in about 1 to 2 minutes. this only happens occasionally, about 2 to 3 times a month in the winter, but i am not able to predict when it happens. i have complained to my volvo dealership and left my car there overnight. but they were not able to reproduced the failure. they suggested me to replace the brake vacuum booster pump. so i did and paid for a new brake vacuum booster pump. however the problem was not solved or alleviated. knowing this could happen any time, i avoid using my volvo in the winter and use extra caution during other times. *tr