hi there, today i started the car and immediately found the steering heavy, i drove away, the power steering started working again but then it had gone and the battery light came on. Im not sure if its the drive belt that gone or the tensioner, is there an easy way to gain access and check to see what the problem is. Do i need to check from underneath the car? whats involved in changing this belt? i have done lots of searching of forums and the web but i cant seem to find a diagram or write up.