BMW 530Le B48 Coolant Leak: Water-Pump Seal and Weep-Hole Repair
A BMW 530Le with a B48 engine had a concealed coolant leak traced by the source to an aged internal water-pump seal discharging through the pump's weep hole. The pump was replaced, its interface was prepared, the cooling circuit was evacuated and filled, and the published acceptance checks covered pressure retention and warm temperature response; year, chassis, and mileage were not reported.
