Just curious if any of you had to replace your batteries in your key fob yet?

My car is a little over a year and a half and the battery seems to be getting weaker. I need to be position my body a lot closer to get the doors to sense the fob to lock it.

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2008 X5 4.8
White w/ Black Interior w/ Bamboo Trim | Premium | Sports + 214" | Tech | Cold Weather | Rear Climate | Premium Sound | Active Vent Seats | Heads-Up | Comfort Access | 3rd Row | Aero Kit | Huper Optik Tint | Clear Reflectors