![]() ![]() E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG. Content on E46 Fanatics Forum is generated by its users. Rotate the coolant level sensor 90ð counter-clockwise and pull out (green arrow). After 4-5 years it's not unusual for the plastic parts of a BMW cooling systems to start leaking from cracks that are barely noticeable! You should have a qualified BMW mechanic investigate ASAP. E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. Figure 10 When replacing the E46 expansion tank, you will have to swap the coolant level sensor from the old tank to the new one. This is an older thread, you may not receive a response, and. Strange thing is both my E46 and the wifes X3 started having the coolant level light go off. Followed this procedure and everything is find. ![]() Volume of coolant in the system varies with ambient temperature when cold, mainly in the cold radiator when running. I replaced my cooling system this summer and thought I bled the system correctly, but with the cooler weather the coolant level light started going on intermittently. Now, it pulls air from the empty ET, air displaces coolant in the system and ET level rises, light goes out. However, since the system is closed any loss is suspicious. So it bleeds itself until the ET is low, you get a light. Is there anyone who can help me here with a proper answer.Ĭream SauceIf you're only topping off with BMW coolant you should do that when the engine is "cool". I know I should definitely use BMW Engine Coolant to top it up, but I have also read stuff regarding flushing the engine coolant or something, and topping it off with the engine running because air bubbles or something can come up? Tags coolant overheating pressure build up. E46 (1999 - 2006) Excessive Pressure in Cooling System After Driving. Without coolant flow to the heater core, the heater will not be able to produce warm air. If the heater control valve breaks or gets stuck, the coolant flow to the heater core may be restricted or stopped completely. I have searched on the forums, and in the DIY section but I have not found a definitive answer. Light Mode We may earn a commission for products purchased through links on this page menu Log in Sign up Home. P1290 Low Coolant Light On P2185 Engine Coolant Temperature Sensor 2 Circuit High Input Basic troubleshooting: If you’re experiencing issues with your BMW heater, there are some basic troubleshooting steps that you can try before bringing your vehicle to a technician. One of the first symptoms of a faulty heater control valve is a heater that fails to produce warm air. 2 weeks ago I recieved a message on the dashboard stating "Engine Coolant Level is Low" I ignored the message and it has not poped up again till yesterday, yesterday it popped up again with the same message. ![]()
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