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: 121,750 (100,000–160,000)
6 model years affected: 2001, 2002, 2003, 2004, more2005, 2006
14 people reported this problem
2 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.
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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?)
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