Discussion Starter · #1 ·
(Apologies for being long-winded) Hey everyone. Thought I'd throw an issue out there to see if there is any commonality/frequency, or if I just happened to have Murphy's target on my back today. It was roughly low 40s this morning so I decided to fire up the heater to warm the cabin up a little prior to departure. Didn't run very long in precondition mode before I left so I wasn't overly concerned about the initial lack of heat output. However, after driving for about 10 minutes it became obvious that there was no heat coming from the vents. I started watching the power meter and noticed that there was no variation in the power being consumed (for example, at stop, the car uses about 0.5kw with the HVAC off; when the heater is enabled, set at HI and MAX, the car should at least initially show between 4 and 5kw). This suggested to me that the electric heater was not even coming on. Ok, no big deal; so I switched to HOLD mode to see if I could get some heat from the engine. The engine started and warmed the coolant to about 130F before it started throwing any heat. A little unusual unless the car is designed to do that. However, the odd part was that there was a little "kick" in the engine when the heat started working, as if the water pump had just kicked in (as far as I know it is not clutched like a traditional air conditioner compressor; wouldn't make sense to be so although I believe that there is an electric pump in that mass of plumbing somewhere that could factor into this as well). I would have just ignored it if this had not happened multiple times, including one trip where there was no detectable heat from the engine even after reaching operating temperature (~170F or so, not highway speed temp, perhaps, but still should be giving off heat). Also of note is that when the heat does work in HOLD mode, shutting the engine off results in a not-so-gradual decrease in the vent temps until no heat is given off at all. Given that the car sat for at least a year on the dealership's lot, I can write off the issue with the ICE heat as a sticky valve due to lack of use. However, the electric heat worries me. I have an appointment with the dealer on Monday to have a recall job done, so I am planning on having them check on these two anomalies at that time. Anyone else run into this on the second gen? The amusing thing is that the first gen I leased had a reputation for HVAC issues, but I never had a single problem with mine. I get a second gen that, as far as I'm aware, doesn't have a bad reputation with regards to the HVAC and suddenly I have a problem. Gotta love it. Cheers!