Blowing warm air, Not hot air. 06 BMW 325i, My car will not blow hot air, Only slightly warm. When it is cold I get no heat. Changed water pump and 3 thermostats, It did not help. I'm told the engine do not reach the correct temperature and the fan comes on to lower the temp even more. The experts are now telling me it could be the DME computer. Cold air when the heater is on means one of four things: - Stuck-open thermostat (very common) - Low coolant/ air pockets in heater core (very common, but should work themselves out with some high-revs driving) - Stuck-closed heater valve (moderately common) - Stuck baffles in the vent ductwork (not common at all) E90 Aircon/Heater fan not blowing air. shaunbridgens; Jan 26, 2023; 3 Fanatics (E21 E30 E36 E46 E90 E91 E92 E93 F30) E90 bmw radio not working. Dawie #3; Mar 11 SOURCE: 2006 BMW 320i E90 steering angle sensor light. hi you can only reset these with a diagnostic tool you can purchase cheap ones on the net, look for OBD2 or OBD ll tools.ebay is a good place, but do not get the ones that connect to computer get a hand held onehope this helps. Posted on Jun 16, 2010 BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > Heater not do seem to work, if I Driver visibility is a critically important factor when driving in all conditions. A faulty heater control valve can cause issues with the water flow to the Fuel heaters also have electrical pump, to increase flow through heater core. Also activates HVAC blower at low setting. Typically fuel heater will NOT increase fuel consumption because what it uses will be less than you gain in faster heat up. NOTE: any start up with less than 80 C, is a cold start. It does heat up engine block - through coolant Step 4. After sealing the outlet tightly, turn on the water. If you’re using an air compressor, turn that on. After some time, the remaining coolant, water, and grime will flow through the inlet hose into the container. Let the water flow for a few minutes to remove the clog. Turn off the water and allow the system to drain. A short example of our working day. On this video we replace the broken aux heater from BMW 330e into a new one. Disclaimer:Bemu Expert Oy does not take any Today we're replacing the heater control valve on my E60 550i! This part commonly fails and leads to hot air forced on one side of the car or both, even when jSIWhEU.