My mechanic also tried that and there was no success getting it to make the sound. The sound is only made when actually driving the car from best I can tell.

Here's the deal, I've owned this Volvo for 4 years now and it has 168,000 miles on it and its still in great shape. A few months ago my service light came on and when the car is being driven about every 30 seconds or so the car makes a squeak real quick. It also does this every now and then when acc...