Self leveling suspension.
Power steering hoses.
Viscous fan coupling.
Washer bottle leak.
Blocked washer nozzles.
Minor electrical glitches.
Pretty hard to find better value for money. Over $250,000 when new and now only $30-40,000 for a good car. Good history is essential. Shape has not dated. Very reliable, extremely powerful, 15.7 litres per 100km, oodles of leather, surprisingly sophisticated electronically for a 12 year old car.
Self leveling suspension is not worth fixing if it plays up - $4,000+! Best to leave it in 'Sport' mode or convert to 735i type suspension.
A lot of 750iLs had problems with their self leveling suspension, most people did what you suggested and either left it in sport mode or simply changed the system to another 7 series type "fixed" suspension.
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