hi i have a 156 selespeed, lately i have had problems with the selespeed box leaking oil, i have taken it to the mechanic who looked at the car and gave me quote. after he had finished looking at the car, put it back together and reconnected the battery, the abs and handbrake warning lights came on. the mechanic has been very unhelpful in fixing the problem. i think that he must have bumped a sensor or connection. does anyone have any thoughts on what the problem could be or know of a link to info about sensors (diagrams would be great)?