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Another victim here with a 98k mile 2007 335xi. We got 3 miles from home when the yellow warning indicator quickly followed by the red indicator and the engine going into safe mode less than 30 seconds later. The engine was already warm from ~100 miles of driving an hour earlier in the day. I quickly pulled over and there was just the beginning of some coolant that forced its way out of the expansion tank.
After a flatbed ride home I let the car cool off for a few hours and confirmed there was still sufficient fluid in the expansion tank. I then ran the self-bleed routine and the pump sounds like a bull frog and no coolant is circulating. Joy.
Anything else I should replace while under there?
water pump + 3 bolts
thermostat housing
water pump to thermostat hose
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