Interesting how your X5's guides started falling apart around 110k miles, my X5 made it to 213k before they failed really obviously. Though who knows how long they were wearing down before they decided to fail completely.

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2003 X5 4.6 | 2000 540i Touring

Formerly owned:
2004 Range Rover | 2000 M5 | 2000 540i/6
1995 750il | 2003 Mercedes S500 | 2003 540i/6