I've lost 3 times this year!!!!

I must have a bad sending unit. My gauge will get to just below 1/4-tank and then stop, never turning on the light. Wife forgot about this while on a trip and ended up walking the expressway (luckily she stalled right under a bridge that had gas stations). The last stall I had was last week when I had forgotten that I had been idling quite a bit since the last fill-up, so my mileage did not accurately reflect how much gas I had used (had been filling up around 350 miles to be safe).

Wish someone could tell me if the fix is a DIY - most people seemed to have taken this one in to BMW to get fixed.

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2001 X5 3.0i (PP/WP/AP) Traded at 213K miles
RARE White on Black - Why does everyone get Tan??
First E53 with 215s on XOutpost!!