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  1. Leonard4

    HVAC Failure, Replacement, same issue again...Ideas?

    So we had a pretty decent snow fall here in Eugene, OR about 2 or 3 weeks ago. First day of 30 degree weather I noticed my 2019 Model 3 LR AWD wouldn't pre-heat from the app, it would turn on for about a minute and then turn off, and when I tried to turn the climate back on I received a "Climate...
  2. A

    HVAC turning on while car is parked and no scheduled departure (preconditioning) set

    I just received my car so apologies if this is a stupid question. I also did a search and did find some matching posts but they kind of tapered off without any solution; so hoping to find a solution. A couple of days ago, I went to the app and set Scheduled departure at 6:30 am and turned...
  3. T

    HVAC button with halo

    I swear the HVAC button in the app looks different every time I look at it! Sometimes there is like a halo around it and it seems to be glowing although it is actually off. What does that mean? I think I get it after driving in cold weather and the battery is still warm but the car is actually...
  4. D

    Do you use A/C during winter driving?

    I'd be interested to share my experiences with winter driving of my Model 3 in terms of using / not using A/C. My thoughts are: - Whenever climate is set to Auto, the Model 3 (almost) always turns on A/C. It's not just the blue button, it's the smell of the A/C-treated air, it's surely running...
  5. C

    Location based climate control?

    Sometimes the set temperature changes automatically when returning home and pulling into my driveway. I think it has happened on both auto and manual HVAC modes. I know that mirrors and suspension height can be location sensitive, but I didn’t think that climate control was. Also, while changing...
  6. Pandalus

    Air conditioner fails twice in two years - advice appreciated?

    Short version: I replaced the compressor in my 2014 Model S just two years ago. Service is telling me it has failed again and want to charge me $4000 for the full fix. Something feels off about all this, and so I'm seeking advice. Longer version: In 2019, I bought a used 2014 Model S85. I...
  7. LeeStafford11

    Strange HVAC issue since windshield replacement

    Here's a new one for me. I had my MY windshield replaced this past Tuesday (OEM glass, 3rd party installer) and when I was driving to work on Wednesday morning the AC, which I always keep on "auto" at 68°, decided that it only wanted the air to come out of the windshield and foot vents. It...
  8. n.one.one

    HVAC replacement prior to solar+Powerwall installation - Daikin Fit?

    I'm replacing two HVAC systems now before installing a solar panel + 4 Powerwall system in the fall. I've narrowed the compressor choices to Daikin Fit variable speed (2 ton + 2.5 ton) that will go on the existing ducted systems. Am I correct in assuming that these should be able to start & run...
  9. R

    Powerwall Compatible HVAC

    About to have 3 Powerwalls installed. Can anyone recommend a compatible variable-speed HVAC system (compressor and furnace)?
  10. J

    Do Winter Heater Failures Portend Summer A/C Failures?

    As an imminent MY customer, I've been paying attention to the various threads about Heat pump problems. At the moment these are mostly stories of inoperative cabin heating/defrosting in extreme winter conditions. However, there are also older threads floating around about weak or occasionally...
  11. K

    Cold Air in Cabin

    Model S, Extended Range, born on 5/2020. Delivered 6/2020. My Climate Control has stopped functioning properly. In addition, COLD air comes into the passenger footwell regardless of setting. If you turn off CC, there is a cold breeze blowing in around the feet of the passenger. This is after a...
  12. S

    Clicking sound coming from climate system fan

    I actually started noticing this last year around this time but it mostly went away during the summer months because the fan speeds were usually much higher. It's a high pitch, high frequency, "clicking" sound coming from the climate system. It's not a very loud sound, but very noticeable at fan...
  13. L

    HVAC barely blowing air (possibly blocked somewhere?)

    Within the past couple of days, the HVAC in my 2020 Model S has been behaving funny (and poorly). Regardless of the fan settings, there's no more than a trickle of air coming through the vents. The air is definitely conditioned (it's cold and dry) but the volume of air is very low so it...
  14. David29

    Inconsistent control of sunroof and AC through the App

    My car is parked in the sun in my parking lot and it is a warm day. I decided to check if my cabin overheat protection was working (I know it is set to 'on' in the car) so I opened the app. The app reported an interior temp of 117F, which concerned me because the COP is supposed to keep the...
  15. A

    AC/Heater Blower removal

    Dear all, in my TMS'14 85 AC/Heat Blower started to make really irritating noises at low speeds. Bearings seem to wear off. I want to replace it myself, however, I don't know how complicated it can be. I know that blower is located behind the glove box in HVAC unit. First you need to remove the...
  16. P

    Air conditioning issues

    Hello everyone, I do have issues with the air conditioning, when I set it to automatic and a set point of 24 deg C (75), I’ll be fine for 20 – 30 minutes or more. Then I get hot air and the temperature in the car goes to 25 in the app. It’s really not comfy. I have to open the windows...
  17. MountainPass

    Vendor MPP Tips - 3 ways to improve your Tesla's efficiency!

    For a while, we’ve been fighting with efficiency loss on our Model 3, and one observation I made was that the rear rotors were quite hot after a drive even when only using regen. So we replaced the calipers and brake pads, and even changed a wheel bearing to attempt to identify and fix the...
  18. T

    HVAC Vent blowing foam out

    Has anyone had this before and should I be worried? I got in my 2012 MS P85 vin P03XXX after work today and before I drove off I noticed the far left vent blew something on me, and had a piece stuck in it, they were about 1/2" long, 1/4" wide, and 1/16" thick. Then another piece an inch long...
  19. H

    HVAC (or, at least A/C) settings depending on GPS data???

    A fellow Hungarian was tapping in to the computer the other day and found this: UI_solarData UI_solarElevationAngle: 56deg UI_solarAzimuthAngle: 126deg UI_solarAzimuthAngleCarRef: 48deg UI_isSunUp: YES He claims that the car uses this information and adjusts the vents accordingly (when using...
  20. K

    A/C problems —help!

    I’ve been having problems with initiating A/C in my model Y over the last several weeks. It typically just blows the fan and despite reset, toggling A/C, etc it will intermittently come on and cool. The service center checked it out and performed thermal testing and of course it was working as...
  21. Jusbechillin

    3rd A/C failure

    I’m super frustrated. I picked up my model Y in March. My air conditioning broke soon after. After the nightmare of trying to get someone at Tesla on the phone and a super rude person on their chat, I finally called the roadside assistance number and got ahold of a real person. She was super...
  22. NormVA

    Model 3: Fan running while parked

    I noticed yesterday that the fan was running when the car was parked. I turned off the fan from inside the car. A bit later it was running again. Is this normal? Is this necessary to protect the battery? What are the correct setting for the HVAC system?
  23. K

    Two different climate control settings?

    After I enter my PIN to drive my climate settings change to different ones. The fan speed and sometime temperature will become different. Are there two different climate control settings? One for PARK and one for DRIVE?
  24. D

    Did Tesla Remove NVH Cover from AC Compressor?

    Hello folks, I own a 2020 3. Apologies in advance if this should be under the Master Thread for 2020 changes. As per title, does anyone know if (and why) Tesla removed the shroud around the AC compressor in the Model 3? I had a look at their parts catalogue, which sometimes gets updated...
  25. Riguy

    Few maint issues

    Hi everyone. Just curious if anyone else is having these issues. None are a big deal and I’ll get handled at a service appointment down the road. Just curious... 1. Drivers side front door window. When it’s down all the way, it moves around in the door. Just closing the door you’ll hear...
  26. G

    Manually Enable Rear Heater Vents

    This has probably been covered before but i couldnt find it- how do you direct heat to the rear vents with a child seat in the back? I know these auto-enable when a person is detected in the back (presume this uses the same seat sensors as the seat belt reminder) but how do you direct heat...
  27. Rooster

    HVAC Control Change?

    The right scroll wheel on my Model X used to change the temperature setting on the HVAC. Now it changes the fan speed. Is this something I changed or was that changed in an update. If I changed it, I can't figure out how.
  28. Necplur

    Brrr! I'm cold! (Interior Cabin Temp Wrong and Blowing Cold Air)

    I have two intermittent problems: When I set the Climate on and to 75F from the app, when I get to the car, it's cold. But get this: The app says the interior temp is 75F. It's not. It's not the 30F that it is outside... but it's not the grandma warm that I want it to be When the above...
  29. Reeler

    Will the Model Y get a heat pump?

    Rumor is that the Model Y will get rid of the PTC heater in favor of a heat pump with a significantly redesigned cooling system. I have always wondered why Tesla didn't follow the other brands who offer a heat pump for us who love cold weather.
  30. David29

    Friendly tip -- Don't block the cabin air sensor!

    My spouse and I were on our way home from Cape Cod after watching my grandson play in a hockey tournament yesterday. it was quite cold, low 20s (F) and windy. On the trip down to the rink, the heater worked fine. The trip was more than 60 miles, plenty of distance for the cabin to heat up, or...
  31. cstork

    Tesla should show how much energy is going to heating

    A main reason range is significantly reduced in cold weather is heating the passenger compartment and the battery. It would be nice if Tesla would show energy usage of this heating and how much it is effecting range. This can help people appreciate the issue and perhaps get them to reduce...
  32. R

    Scan My Tesla results

    I own a 2018 M3 RWD and the following is some information I gathered using SMT. With the car not plugged and the ambient temp around 48F the car draws 3.5KW to heat the traction battery and about 7KW max to heat the cabin for a max total of 10-11KW. When the car is plugged into my [email protected] it...
  33. B

    Cabin temp vs seat heaters with 3 passengers?

    I understand that using the seat heater instead of the cabin heating is more efficient, but if the cabin is cold I find that my hands get a bit colder than I'd like and also, the windscreen and windows start to mist up so I really need to have some cabin heating. So I'm finding that while...
  34. H

    Heater not maintaining settings

    I’ve been noticing every day when I get in my car, the temperature (set to HI in the winter) is still maintained, but the directional setting for air flow is changed to the lower (towards the feet) direction instead of the towards the face setting that I prefer. Also, the toggle for A/C is on...
  35. C

    Model 3 Heater Blows Cold Air

    Bought my Model 3 last June and brought it to South Korea with me and now experiencing my first Winter here. Really frustrated how the heater does not work. I’ve watched YouTube videos explaining how it needs time to heat the battery before the heater blows warm air. I’ve driven it on long trips...
  36. I

    How to tell if cabin heater is on

    Alright, probably a stupid question, but is there a way to tell that the cabin heater is being used besides feeling warm air coming out of the vents? I know it is more energy efficient to use the seat heaters, but how do I know the heat from the HVAC system is off? Thanks.
  37. B

    Heater Issues

    I took my M3 into the SC after reviewing posts about people having the same problems i had (have). The heater, on auto, on hi doesn't blow that hot. and for whatever reason only blows in the floorboards. so, i turn it on manual and turn it to hi and 10 blowing just out of the vent. it blows...
  38. jipvk

    Air intake filter surfaced

    As most of us have seen, there are various sources to buy a plastic grid to keep the HVAC air inlet under the hood clear of debris. I now also saw another type of product surface. An actual filter that fits over the air inlet, and can be combined with the plastic grid on top, I didn't see it...
  39. hcdavis3

    Range drop

    Could this sudden drop be due to my using my heater today? Thanks very much.
  40. C

    Cold range numbers w/ various heat settings

    Hi folks, A quick few notes. I normally get around 135 Wh/km on highways in weather where I need no AC, heat, or open windows. Maybe windows are cracked a tiny bit, or low speed fan-only. LR AWD is rated for 150 Wh/km from what I can gather. Temperatures in degrees C. Range in km. Because...
  41. K

    Minimizing Cool Temperature Impact on Range?

    We will be doing our first long road trip with our Model 3 LR AWD starting on Sunday. It may be fairly cool on the morning we leave (temperature around freezing is forecast overnight), so I'm seeking advice on how to keep a warm enough temperature in the car while minimizing impact on range...
  42. S

    Weird heater problem

    so.. a friend has a weird problem with ptc heater.. maybe you guys can help out. Blows only cold air even at HI heat, then maybe after 30seconds blows really hot for a few seconds, then again cold air for next 30sec, then hot for a few seconds.. cycles like this. AC on/off has no effect.. model...
  43. S

    AC fan running - not charging and parked in cool garage, why?

    Did not drive my car at all yesterday, opened my iOS app once to check on charge level and a couple hours after that was in the garage and could hear a fan that sounds like it is coming from near the top of the frunk near the wind screen. Mirrors were folded in and I peaked in the window and...
  44. DeedWest

    Active Cooling Cycles (While Charging) MYSTERY?!

    Hey everyone. I currently have two 2.5 Sports under my roof - VIN 1414 and VIN 1462. I've noticed something rather spooky recently when studying the active cooling cycles while both cars are charging. I was hoping some of you guys could weigh in. THE ISSUE - 1414's cooling cycles (while...
  45. TimothyHW3

    HVAC consumption, how to check and increase range

    I shot a short video explaining how you can calculate the HVAC consumption in an electric vehicle (not just Tesla or Model 3) and how to increase the range with the knowledge you gain. In the next video I will show you how our 2500km Norway trip went Let me know if you have any questions.
  46. BZM3

    HVAC on a timer

    Hey TMC! Since I, like I'm sure many others, leave home and drive home at basically the same time each day, is there a way I can set a timer to automatically turn on the heating/cooling of the car? If not I think this could be a great future update. For example, each day Monday through Friday...
  47. F

    Wrong heater/AC vents blowing randomly

    2014 model S. The wrong heater/AC vents are blowing. Sometimes the Heater/AC will blow on my feet or the windshield even though I have selected the mid vents. Switching to the floor vent will some times get the mid vents to work but very little at the floor. Changing fan speed or recirculation...
  48. Viridian

    HVAC Fan and Door Handle Issue

    Hey everyone! I purchased a used 2015 85kWh Model S with ~41K miles earlier this year direct from Tesla. I have loved every mile I have put on the car and even the trips to the service center have been relatively hassle-free in my experience. However, there is one issue that has plagued the car...
  49. David29

    Has the Model S HVAC system been upgraded over time?

    Does anyone know for certain whether or not, and if so how, the Model S HVAC system might have been upgraded over time? We all know that Tesla does frequent improvements without telling us, ranging from minor to possibly more significant. But I wonder if the HVAC system has been improved from...
  50. M

    Ventilation without the heater in cooler weather?

    Model 3 has a button to turn off the AC but unlike most other cars, it has nothing to prevent the heater from activating. Here on the Central Coast of California, it is quite cool in the mornings and evenings and unless I manually set the temperature way down until I hear the fan and heat go...

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