Nov 17, 2015
mknox Yep. I have found this too. But I also find I have to bump the fan speed as well. Quite often, I'm freezing and it is only running at 2 in Auto.�
Nov 17, 2015
Cyclone We just need the ability to pick and choose our firmware version (allow us to go back and forth), so then we just run v7 in the Summer and v6.2 in the Winter!
�
Nov 17, 2015
SmartElectric Our 2013 Tesla with 7.0 (56) firmware is sitting at the Mississauga service center this evening.
Tesla pulled the logs from our car and determined the cabin heater is the source of our recent discomfort, namely, the inconsistency of cabin heat, sometimes it heats, most times not.
We will see if this is a hardware issue, or not. We couldn't even get pre-heating to work reliably this past few weeks.
I attempted to work around the issue by assigning temperature to the right side scroll wheel and change the temp from HI to 30C back and forth every few minutes. This would sometimes work, but most times not.
We were unable to get the car warm, let alone hot on a number of 300 km + daily outings over the past few weeks.
Again, will report back here later this week after the cabin heater replacement.�
Nov 18, 2015
cwave1 Coincidentally, mine is also at the Mississauga SC right now for the same thing. I hope this isn't an epidemic. :smile:�
Nov 18, 2015
mknox I'm having heating problems too, but it's only since v7. Gotta be a firmware bug as far as I can tell...�
Nov 18, 2015
BozieBeMe2 Received a call from Tesla this morning. 11/18
It seems that they noticed a post that I had placed on the forum concerning my loss of comfortable heating in the new v.7.0 update.
It was type of bug involving the air diverters, inside the duct work. My local SC had overnight, pushed a newer version of software, v7.0 to my car and requested that I install it and let them know if it resolved my issues with the low heat and low air flow.
With this version of v7.0 (2.7.77) software, my issues are now resolved!
I used the defroster, center and the floor settings and all of these settings work as you would expect them to. I finally placed the settings on automatic as per my SC suggestion and the system works great.
The heat is more than enough and the fan speed rises and falls as needed. The car now has plenty of air flow and plenty of heat.
Since I hate being cold, I wasn�t really looking forward to driving the Tesla in the coming months, but now I am now looking forward to (some) coldweather, just to try it out.
I am happy to say, Tesla�s pro-active handling of this matter, is outstanding in my opinion! They listen and they do care.�
Nov 18, 2015
mknox I had 2.7.77 pushed to me yesterday afternoon. I'll give it a few days, but it still seems weak to me. My problem is I get heat, but in Auto, not enough fan speed to move it around. This morning it was around 40 F outside and the fan was running at 2. If I manually bump the fan speed up, at least while I'm trying to warm the car up, it works a lot better. Prior to 2.7.77 my car would seem to gradually cool down as I drove after initially warming up with my manual fan speed intervention. I'll need a few days to see if that is any better.�
Nov 18, 2015
Duckjybe I wonder why they are not pushing 2.7.106? I wonder if they found a bug?
Fan does seem lower but heating ability still seems ok.�
Nov 18, 2015
bmah Hrm...interesting. My car received 2.7.77 yesterday afternoon, which I remember thinking was odd since I typically receive software updates overnight. Also there were only two other people reporting receipt of that particular version yesterday in the firmware tracker. Wonder if that's a similar situation to you?
I honestly wasn't paying attention to my HVAC settings when I drove to work this morning (and it wasn't that cold outside). I'll have to check this out over the next few days.
(waves to Tesla employees monitoring the TMC forums)�
Nov 18, 2015
jerry33 It was 10C this morning. Setting the temperature to HI does the same thing that it previously did when set to 30 during preheating. Setting it to 30 doesn't get it very warm anymore.�
Nov 18, 2015
Chris I want that update, too please. Since 7.0 I have been having the same issue with heat. And it's getting cold this weekend...�
Nov 18, 2015
SmartElectric Picked up our car today and the firmware was updated to .77 and the cabin heater replaced (along with the refrigerant/liquid).
FIXED! The car heater blew hot the entire ride, I changed the temperature, fan speed, vent locations and various other settings to confirm. Defrost blew hot as well. Whew!
Thanks to Kevin @ Tesla for investigating our problem, and resolving it so rapidly. It amazes us how quickly Tesla is able to download logs, figure out the issue all without us needing to drop the car off for service until there was a repair slot open. We have never enjoyed better service for a vehicle. (except my Smart Electric Drive which has needed exactly ZERO service of any kind in the two years I've owned it)
Note that there was a bit of a rush to get this done, as we are heading away soon for 500 + km of driving this weekend including several late night drives to/from events.�
Nov 18, 2015
cwave1 Thanks for the update. I have a little longer list of other items so mine will be returned in a few days but I'm assuming they are performing the same fix.
For those in this forum discussing the firmware version differences - mine was different after v7 was applied but still worked. However, 2 days ago it started providing only very cold air regardless of temperature setting, mode, or fan speed. I'm pretty sure this is not just a firmware problem but I'll report back once I find out for certain.�
Nov 18, 2015
Duckjybe I'm wondering if it is a firmware change that is potentially detrimental to the HVAC system. Before the latest update the compressor was cycling more than before and there was a little bit of a burnt smell when the heater was supposedly on. In any event Tesla is on it with a resolution.�
Nov 19, 2015
mknox I always manually over-ride the a/c to off once the temperature drops. Always did this on past ICE cars as well to save gas. The compressor will come on if you select Defrost, even with it on over-ride so I can't see a downside.
I think the "burnt smell" is just dust burning off the heater elements. I've noticed it at the beginning of each cold season for the past few years, but it eventually goes away. It could possibly be exacerbated by the fact that the new algorithm seems to run the fan at lower speeds, so not as much air is passing over the coils.
I've noticed another oddity with v7: At a stop, the power meter will really fluctuate around as if the heater can't make up its mind about how much power to use. In the past, it would just sit steady when the car was stopped, and go down in steps over time as the car warmed up.
I also noticed that .77 does seem to run my fan speed a bit higher on Auto, but, IMHO, it's still too low.�
Nov 19, 2015
rdrcrmatt I was pushed 2.8.212 (I think that's what it was) as of last night.
I'll update this thread next time I drive the car.�
Nov 19, 2015
nleggatt Anyone have it where the heater won't hear the air since 7.0, it was cold this morning and I had the heater on hi for like 20 mins and nothing. This afternoon it worked fine. Also before my 7.0 my windshield fluid pump wasn't working, update to 7.0 and it magically worked for a few days and then nothing again�
Nov 19, 2015
brianman Same experience and opinion here.�
Nov 20, 2015
scottm Sounds like an intermittent electrical...
or maybe it's what your reservoir is filled with: anti-freezing washer, or "summer bug formula", or worse, water? Maybe it froze up, and thawed, what's the O.Temp?�
Nov 23, 2015
vchadha I have firmware 2.8.217 and with HVAC settings on AUTO it is working fine now.�
Nov 23, 2015
scaesare A quick thought on this:
With the introduction of v7, many of us saw a ~10% reduction in driving energy usage reported on the dash. For me, I was still able to make my morning commute at under 300Wh/mi, despite temps starting out in the high 40's and ranging in to the 50's. Previously that had been impossible for me, as even with conservative driving, as it appeared pack heating would burn some juice.
Now, that appears to no be as aggressive. Coincidentally, the cabin heating appears to be wonky as well.
We know the cabin and drive-train thermal systems are tied together[1]. I wonder if an attempt to optimize on affected the other?
[1] Although I believe the cabin air heaters are free-air PTC heating elements, not coolant heaters as they are for the pack.�
Nov 23, 2015
mknox Not me. I watched this like a hawk since I got v7 and could not discern any change. No better, but no worse. The release notes said that 2WD torque sleep was supposed to help, but it doesn't seem to in my case. It could be because my 45 mile (each way) commute is mostly freeway with little start/stop along the way.
The HVAC has been totally nuts, however. It seems to turn the heating elements on quite high, but operates the fan speed quite low. Usually around 2 but sometimes 3. So low that I get a burning smell from the heating elements I'm assuming because there isn't enough air flowing over them. If I manually bump the fan speed up, it works better... for a while. Eventually, the cabin starts to get noticeably cooler after having warmed up initially quite well, and then I have to start bumping the temperature up.
This morning, it was 25 F out. Same thing. Fan speed of about 3 on Auto and burning smell. I don't know why it doesn't start out with the heat on high and the fan at at least 8 or 9 to quickly warm up the cabin, then throttle it back. This is how every other car I've had with automatic HVAC has worked.�
Nov 23, 2015
scaesare Clearly both behaviors are not consistent across the board for everyone... or even for a single car. My heater seems fine on some occasions, and sub-par on others. Some have reported energy usage reductions, others don't.
So who knows what other factors are in play, but I do find my apparent less aggressive pack heating and my less aggressive cabin heating to be an interesting coincidence that showed up with v7...�
Nov 26, 2015
cwave1 I finally got my car back after 8 days at the Mississauga service centre. I had a lengthy list of items to fix but I think the heat problem was fixed within 2 days. I have other items that still require a return visit (drive unit, winter brake package, rear suspension clunking, headliner replacement due to pano leaks).
Here is what the work order shows was done to fix the heat issue:
Corrections: DC-DC Converter - 1st GenerationReplaced
- DC-DC converter that was causing no heat condition.
Part Quantity
DCDC CONVERTER ASSEMBLY (6009170-00-J)1�
Nov 26, 2015
bart513 I'm new to the MS and the heat was on with the AC - also my kids were cold for some time as the rear vents were giving cold air for 5-10 minutes and the air flow was very weak. I have a 2015 MS 85D�
Nov 26, 2015
bhuwan I am starting to notice poor HVAC heat now that the weather is getting cold. Is this a firmware issue?�
Nov 26, 2015
jerry33 As far as I can tell, yes. It wasn't that way last winter. New with V7.�
Nov 26, 2015
scottm V7 should have included a button in HVAC called "Randomize" or "Shuffle" ... because that's what we're getting?
Is it my imagination that at the end of the long decel / regen.. the cabin heat blows a little hotter than steady state driving? Like something is trying to shed heat in regen process, and if HVAC heating is on, then heat gets dumped into it... This is happening when the battery still shows a "cold" line where max regen has been reduced. Wonder if excess spills over to HVAC electric coils somehow... I dunno. Wishful thinking !?�
Nov 26, 2015
Peter_M Just curious... what's a "winter brake package"?�
Nov 27, 2015
cwave1 I've had my rotors start vibrating for the second time after last winter. Tesla mentioned that in cold climates like ours where salt is used on the roads, the salt pits the rotors and causes them to warp. They have a new design for us that they are installing under warranty.�
Nov 27, 2015
mknox I was at my local Service Center today, and the manager there asked me how my heat was working. It seems he had been getting a lot of complaints. I told him (won't repeat again here). He said Tesla's intent with the lowering of the fan speed was that the elements could radiate more heat without as much air flowing over them, and that a slow warm up of the cabin is more efficient than a fast one. He kind of agreed with me that in colder climates, sometimes more airflow is necessary to prevent window fogging and such. My suggestion to him was to move this new algorithm over to the "Range Mode" setting and leave "normal" HVAC operation alone.�
Nov 27, 2015
jerry33 I used the defogger for the first time this winter today. Put it on the second level (red) and cold air blew out. The car was preheated before driving. I'm not impressed.�
Nov 27, 2015
trils0n I am noting that the max defrost (red) no longer always puts the fan speed to max like it used to. Sometimes it hangs out around 8-10 instead of going to 11. Weird changes. (Does this in both .56 and .77). .77 seems to be slightly better than the initial release -- I only had to put the temp to 77 instead of 81 to get it to blow warm (not hot) air. Not happy with heater performance.�
Nov 27, 2015
AWDtsla Salt does not "warp" rotors. Clearing the brakes after the have rusted over due to being wet or salty while not letting them heat up, and occasional heavy braking with cool down is necessary to keep the braking surface smooth. When people say "warp" what they really mean the the surfaces is contaminated with uneven rust or brake pad deposits. Of course, cars that are not in California often see wet or corrosive environments, and don't get cleared because the car won't do it automatically, and the owner doesn't know any better. Yet another reason to have a regen disable button.�
Nov 27, 2015
cwave1 I'm only communicating what Tesla told me. Your point is valid and probably correct but the good news is that Tesla is taking care of these issues as they learn more about the car in different climates and with different driving habits (like trying to never brake which many of us Tesla drivers prefer).�
Nov 29, 2015
AmpedRealtor Or, Tesla could do what every other auto manufacturer does. Test the car under different conditions and don't depend on your customers to do it for you. Tesla creates something and just throws it out there, leaving owners to solve problems for the company. This is not a sustainable model from a company who wants to further sustainable transportation.�
Nov 29, 2015
bhuwan Wonder if there's a solution for this or will Tesla wait until I freeze to death in the car?�
Nov 29, 2015
Andyw2100
That's not really a great solution either, as some of us are choosing to always drive with range mode on in order to maximize the benefits of torque sleep. While we recognize that doing so means we get somewhat less energy devoted to HVAC, dumping whatever this new setup is into range mode and thinking that is a solution to the problem really wouldn't be a great approach. Tesla needs to go back to the drawing board on this.
As an aside, I'm not sure I've noticed this new issue, but then again, I never use any of the "automatic" HVAC functions. I just set a temperature and a fan speed manually.
New as of when?
Any idea how they are communicating information about this to those affected?�
Nov 30, 2015
cwave1 I first went in to my SC and heard this diagnosis in May 2015. I don't think Tesla is contacting people proactively. If you go to service and have warped rotors and are in a cold climate, they will replace them. I also heard that Tesla does not machine rotors. I don't think they even have the equipment for this at the SC.�
Dec 1, 2015
mknox Noticed the same thing myself: One tap (blue) just directs air to the windshield without affecting temperature or fan speed. Two taps (red) directs air to the windshield, bumps the fan up high and shows the temperature settings (both left and right) as HI... but the air coming out is no longer hot. Wonder why???�
Dec 1, 2015
jerry33 The short answer is V7 is a huge downgrade.�
Dec 1, 2015
cwave1 I tried this tonight for the first time since my heat was fixed. I can confirm that not only does it show HI heat but it is very hot and the fan goes up to 11. I'm on .77 and I started from a cold car.�
Dec 2, 2015
mknox When you say "fixed" what did they do, exactly? Kevin at the Mississauga SC asked me how my heat was when I stopped by last Friday and I told him that it worked... just poorly since v7. I get heat in the car (so the heating elements are working), but the fan speed is way too slow (2 or 3) and as I drive the car gets noticeably cooler even though it does warm up initially. And I also noted that stage 2 defrost (red icon) is only blowing setpoint temperature air (fan does go to 11) in spite of the fact that the temperature dials say "HI".
I have to get my 100,000 km "annual" done along with another DU replacement, so I may ask for whatever "fix" it was you got at the same time.�
Dec 2, 2015
Kalud I still think the poor performance you are experiencing is related to the little aspiration temperature sensor under the armrest. Hope they can do something, or simply add a
#ifdef NO_ASPIRATOR_SENSOR
#define MIN_FAN_SPEED 5
Không có nhận xét nào:
Đăng nhận xét