Report: Coolant Leak From Radiator
BMW 323i Problem
Model Year Affected: 2000
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.
Visitor, 2000 BMW 323i, 80,000 mi
I had this problem and had to have a cooling overhaul, see: engine overheating, water pump is a mandatory replacement if you don't want to fix it twice...