For a couple of days I noticed that the AC in my 2014 BEV has stopped blowing cold air no matter how low I set the interior thermostat (currently average 70F outside). After a long drive that drained the battery down to 2mi on the GOM the cabin ended uncomfortably hot, I was sure the AC wasn't cooling.
Brought it in to the local dealership, diagnosed as a faulty "Heat Pump Control Unit" stuck on heat. Repair quoted for USD2500, which included replacing the Control Unit (64-11-9-314-803), evacuating the coolant system, replacing the Electrical Expansion Valve (64-11-9-292-567) and replacing the various gasket rings and re-pressurizing the system.
At this point I can't afford to pay this amount.
Has anyone DIYed this replacement themselves?
Can one just replace the Heat Pump Control Unit? I assume replacing the valve as well is part of a written BMW procedure that the techs have to follow.
Does replacing the control unit require ISTA programming?
Brought it in to the local dealership, diagnosed as a faulty "Heat Pump Control Unit" stuck on heat. Repair quoted for USD2500, which included replacing the Control Unit (64-11-9-314-803), evacuating the coolant system, replacing the Electrical Expansion Valve (64-11-9-292-567) and replacing the various gasket rings and re-pressurizing the system.
At this point I can't afford to pay this amount.
Has anyone DIYed this replacement themselves?
Can one just replace the Heat Pump Control Unit? I assume replacing the valve as well is part of a written BMW procedure that the techs have to follow.
Does replacing the control unit require ISTA programming?
