Water Pump May Develop Coolant Leak on BMW 325i

The low coolant light may illuminate and/or the engine may overheat as a result of a coolant leak from the water pump. The leaking pump will require replacement and the entire cooling system should be inspected for leaks as it is not uncommon to find multiple leaks on higher mileage vehicles.

Overheating can cause severe engine damage. If the engine begins to overheat it is recommended to stop at the first available location and have your vehicle towed to a repair shop.

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Average mileage: 94,181 (20,000–145,000)
6 model years affected: 2001, 2002, 2003, 2004, more2005, 2006
21 people reported this problem
10 people shared problem details
Actually, my water pump wasn't pumping enough fluid to cool the engine.. I replaced the pump, and found the impeller was plastic, and had broken loose from the shaft. Not long after that I began getting low coolant warning, and had to replace the expansion tank, due to leaking. Evidently these are known issues for the 325i.
I had water pump and coolant reservoir replaced but it still leaks antifreeze periodically. Is this possibly also the reason my AC/heater doesnt blow anymore now?
2003 BMW 325i85,000
Water Pump replaced
2006 BMW 325i90,000
Paid an arm and leg for the repair and replacement, it happened while driving to Vegas :(.
2002 BMW 325i145,000
Both the thermostat and water pump were replaced before the car hit 100,000 miles.
2006 BMW 325i126,000
Had vehicle inspected before a thousand mile trip . Mechanic completed a test which found the water pump needed replacing, Furthermore, the reservoir , coolant is leaking. Indication light is on Car is over heating and driving in lower gears.
2003 BMW 325i90,000
Water pump faild
2006 BMW 325i55,000
Water pump failed and car overheated. Mechanic replaced waterpump and coolant; cost $1,000
2006 BMW 325i144,000
Coolant loss leaking pump replaced pump. you dont have this job on your site.
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