The temperature sensor on a BMW 325i is located on top of the engine, near the upper radiator hose. It constantly monitors the temperature of the coolant and triggers the cooling fan as needed.
P2185 is ECT sensor high voltage detected. ECT stands for Engine coolant Temperature Sensor.
you may need to replace the sensor for the coolant, there should be a wire connected to it.
in the intake air box
that's a big negative
If your 2001 e46 325i BMW heater is blowing cold air, it could be due to a few common issues. First, check the coolant level, as low coolant can prevent the heater core from warming up. Additionally, inspect the thermostat; if it's stuck open, the engine may not reach the proper operating temperature. Lastly, consider the heater control valve or clogged heater core, which could impede hot coolant flow into the heating system.
is in hard to replace a thermostat on a 2001 bmw 325i
BMW coolant from dealer. It is blue in color and can be purchase fairly cheap at any BMW dealer ship. Around $20 for a gallon. Hope this helps.
think you will find it under the drivers side bumper, it looks like a round disk.
If you have a 1989-1995 model 325i, the ambient temperature sensor should be part # 65818350779. Best way to see a picture is do a Google image search on the part number. It will look like a plastic piece, black on the probe portion, yellow on the plug-in portion, with 2 round electrical connector pins.
Water
How often need to change the fuel filter for a 2001 BMW 325i?"