I had mine apart twice last week. Rear pump was frozen and leaking a little. Front worked but was leaking fast. Hoses and grommets were fine along with the headlight washer system. If I were to to it again I would just order 2 new pumps w/ grommets first.

You can't see anything once you remove the wheel well cover. Getting that out of the way allows you to remove the skirt (or running board) and get to the bolts on the bottom of the fender. You need to pull the bottom of the fender out an inch or so to be able to see/do anything.

Once you get the pumps out. Plug the input line and apply a small vacuum to the output. If it does not hold a small vacuum, you have found you leak.

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2009 35d, 2006 325i & 330i