Coolant Leak From Radiator on BMW 325i

It is not uncommon for the radiator to develop a coolant leak. A leaking radiator will require replacement. When a leaking radiator is replaced the entire cooling system should be inspected and if any additional leaks are found they should be repaired also.

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: 130,833 (100,000–160,000)
6 model years affected: 2001, 2002, 2003, 2004, more2005, 2006
16 people reported this problem
4 people shared problem details
I had to replace my radiator at 100,000 miles due to leaking.. It's my understanding the radiator is expected to fail every 5 years or so.. I also replaced the expansion tank, hoses, and the thermostat and housing.. All were failing as well, as they are plastic parts.
Coolant was dissapearing from tank and dash light kept turning on. After adding the 50/50 coolant/distilled water to the tank, the radiator blew in the front. Do not know the cause, but had the radiator replaced. (so in 20k miles, we've had to have the coolant reservoir, water pump, thermostat, and radiator replaced- that's like the whole coolant system, right?)
2004 BMW 325i140,000
Apparently there was a hairline crack that was causing the car to overheat. Had to be replaced twice and now after a year we'll be replacing it again. Last time I'll own a BMW.
2003 BMW 325i158,000
Leaking coolant after ten minute drive to store on back roads (25 mph)
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