Power. When your central AC isn’t cooling, begin with the simplest troubleshooting steps. Verify that the AC is getting power by checking these three spots: the circuit breaker at the panel, the exterior unit’s disconnect and the furnace or heat pump’s power switch. That final item can sometimes get bumped accidentally, and the fix is as NEED HELP FAULT CODE E723. 2007 BMW X5 . A/C not blowing cold. A decent BMW diagnostic scan tool will tell you codes in words much clearer than the original post above. To have any hope of diagnosing your issue using ONLY the codes in the IHKA, you're going to need a better diag tool, preferably one with two-way communication, which can command Forum posts have reported similar issues, one cause can be the AC being ON for a long time(e.g. a few hours during long drives) and ice is formed. BTW my old E39 had an AC issue in which no cold air came out. It was diagnosed as faulty final stage unit(blower resistor) and was fixed under warranty. Hey, just had this problem. Warm air on the driver's side and cool on the passenger side. Freaked out from all the posts about an evaporator leak and having to take apart the dashboard. Repair going to be $2,000 to $3,000. Had not had the A/C serviced for a while. They did a complete evac and recharge. Cold as ice now! Hi, I have a 2006 bmw x5 3.0 six cylinder engine. the problem i am having is when i start the car for the first time for the day, the ac blows hot air for the first 5-10 minutes. the compressor is eng … Obviously the only way to test this is with an A/C machine and evaluate the high/low pressures. The second cause, can be a faulty auxiliary watervalve/pump. Located on the inside of the drivers side shock tower. If one of the solonoids fails, it can get stuck open. Causing coolant to flow through the heater core. I have question on rear ac vent. Front vents are blowing out freezing cold air but rear vent is blowing warm air I took it to dealer and they said 3/4 series (435ix is my vehicle) doesn't have separate climate control in the back so it's pulling front ac air by the time it reaches back it would be warm and that's normal. A Leak in the A/C System. A small refrigerant leak is the most common reason a car's A/C gradually loses its cool. A leak is typically caused by a mixture of moisture and refrigerant that, when combined, creates a corrosive acid that eats away at seals, valves, and hoses in the A/C system. A leak in your A/C system could be causing the unit to .

bmw x5 ac not blowing cold air