Headlamp replacement instructions incomplete???



Need to replace our driver-side low-beam halogen bulb. Hard copy manual and on-line manual appear to be missing a step:
http://www4.mercedes-benz.com/e/cars...html#d13e44142
Open the hood: check.
Turn housing cover.... wait a minute! How do I get to the back of the housing beforehand??? There's no explanation for this in the manual!
What step is missing in the manual? All help greatly appreciated.
Murray



I can't figure out how to access the backside of the headlamp assembly. There's no way I can get a hand back there. You'd have to be E.T. to fit a hand back there... there's a coolant tank in the way, it appears.






