Originally Posted by Nanniepoo

I would think '07 and '08 would be fairly similar, but I didn't have to dig through the wheel arch to get to the aux pump. I had ok access in the engine compartment. I can't tell you when specifically it turns on, but if you hold accel pedal down with ignition on (engine off), it'll kick on. Supposed to help you bleed coolant. I could hear it run, but a hand on it will certainly be obvious if it's on or off.