BMW 535XI COOLING SYSTEM Cooling System Flow Diagram – N55 INDEX EXPLANATION CHART 1 Radiator 2 Engine oil to air cooler (hot climate version)3 Heater coil4 Characteristic map thermostat5 Electric coolant pump6 Exhaust turbocharger7 Heating heat exchanger 8 Coolant valve9 Oil-to-coolant heat exchanger10 Coolant temperature sensor11 Engine oil thermostat (hot climate version)12 Expansion tank13 Coolant … Continue reading BMW 535XI COOLING SYSTEM