Just purchased my first Volvo (2004 S60 AWD). Within the first two weeks, the Check Engine Light came on. Took car to dealer and they downloaded software to lower the sensitivity of the sensors. Claimed this was a problem with Volvos. Within 3 days the Check Engine Light came on again. Also, the gas cap message also appears even thought the cap is tight. Are these common problems with this car? Am tryin to get a feel as what I should expect from this car. Thanks for any advice.