E83 unknown problem... Need help
I have an E83 X3 (2.5si) 2007... Bought it 2nd hand with 70000 km... The car drives well, but when driving slowly (10-20km/h) the 4x4 light flashes, ABS system is activated for a second before it moved normal again. When deactivating the 4x4 the car gets a hikup at the same speed. The car also has some hesitation (but when the fuel paddle is pressed it goes fine). I took it to a local BMW specialist. We tried almost everything, from changing the tiers, abs sensors, angle sensor, transfer case actuator, transfer case... I changed the transfer case oil... But with no results. Same problem! There is no faults at all on the car log. Any ideas?