Still hoping there is a secret button combination that can boost the heating! Temperature via sensor is controlling function. Also remember high energy consumer loads (heated seats, rear screen, etc.), can mean functions including the heated mirrors are regulated, so appears slower to heat. Appreciate 1. BMWZ4. So has to be down to wires or something else stopping it. Could be a nearly broken wire. Enough to show voltage, but not enough to carry any current. If you measure the voltage drop on the wiring, you would probably see nearly 12V drop in the wire when trying to operate a light. No. You may have a slight amount of natural circulation of coolant if the engine is hot but I doubt you'd notice it in any way. ii) Does the heater control valve circulate coolant to and from the heater core with the engine off. No. The valve being open will not circulate coolant unless the pump is running. Thermostat is broken. If you change that, might as well change the water pump. __________________. If no codes are being thrown use Chevron Techron fuel injector cleaner (concentrate). It solves rpm fluctuating upon cold start-up. Also, for most BMW problems start off by scanning your car with the Peake Research Tool. 68. Plug-extra wire to heater wire 69. Plug-heater wire to fuel pump wire 70. Connection for heater 71. Ballast resistor in heater 72. Thermoswitch (parked car heater) 73. Heater motor 74. Overheating switch (parked car heater) 75. Heater plug for parked car heater 76. Heater 77. Fuel pump 78. Plug - on-board computer to remote control 79. 2011 N55, Heater not blowing hot air. Bimmerpost ☰ Model Selection. 1. F40Model Year E90 / E91 / E92 / E93Model Year: 2006 - 2011. 4. G22Model Year: 2020 + http://www.vehix411.com This video will show you how to diagnose or troubleshoot the no electrical power in the car. Ofcourse check fuses first and trouble c iTrader: ( 0) No dont think so. Unscrew the nut holding wiper arm on. Spray some WD40 around the circlip on spindle. Operate rear window wipe and see if spindle turns. Spray with more WD40 if need be. Upto you if you wanna strip in down further and clean/grease up after that. At least this will show you if it IS the problem first.. The easiest way is to remove the steering wheel and compare it to a car that has steering wheel heat. 2. Assuming your X7 is pre-wired for steering wheel heat (and you obtain a heated steering wheel) you will need to get your car coded to "turn on" the steering wheel heat feature in the X7's software. The above steps are somewhat simplified gITtum8.

bmw e91 heater not working