here is where I went to get help. I think it helped a lot.

international@volvocars.com

 

Update on my HVCH.
After sending an email to the international email address I had a response from them within two days that my part was being shipped. A few days later the part arrived at my dealer. The part was installed as soon as I could get in. It took about a week to get an appointment just because they're shorthanded and busy.

It's been 10 days now and everything seems to be working like it used to last winter. Plenty of heat on pure only mode.

 

Good stuff.

I wonder if there is actually a performance implication of this. I've found that if I'm on pure on a cold engine and I floor it the ICE kicks in but the acceleration is extremely poor (feels like 200-250 hp). I had always assumed the engine is cutting output because it's cold, but I wonder if the HV system also preheats the engine itself so that it's ready to go even from electric mode...

 

My HVCH is probably out as well, electric heater's not cranking heat, just when the engine runs. I haven't had a chance to check the fuses yet (no clue as to which fuse), but as it's warmer now, the A/C is working fine.

A note though as to flooring it on a cool or worse cold engine, I wouldn't do that. Personally, I wouldn't do that to any engine, but with a supercharged AND turbocharged engine, I think you're asking too much from it. When the metal is cold and the oil is also cold and not flowing as it will when warmed, it just doesn't make good sense for longevity. It can take from 5-10 miles of normal driving to bring most engines to normal operating temps. The supercharger is going to ram air from a low RPM into the cylinders compressing it for a hotter burn and more power. As it builds RPM's if still under throttle, the turbo will kick in continuing the hot and high compression burn churning up maximum H/P. Could very well wind up with anything or everything from warped heads, scoured cylinders, early bearing wear, to blown gaskets and seals. And a read out of the computer will tell the shop precisely how it's been driven. Could be a case for a refused warranty claim.

Maybe the car is smart enough though to not fully answer a foot in the floor throttle response when cold and that is what you may have experienced. I've owned north of 200 cars (new & used), many of them high performance Porsche's & Vett's so I'm not talking from lack of experience.

If I misunderstood your comment, then I apologize.

 

I promise I never would floor an ICE-only car without pre-heating it. It hurts my soul.

But the difference on this car is unlike an ice-only which I'm gentle on for a few minutes, if I'm to expect this would be mistreated by being floored it would in essence mean that I can never request full throttle if I'm driving on pure. Surely volvo anticipated this and addresses it either by pre-heating the ICE if the HV heater works or cutting throttle (the latter sure seems the case to me)...

Actually, if I remember to I am going to test the 0-60 on this on a cold engine from a dead stop. I am pretty sure it's going to be much slower than with warm. I got high 4's or 5.0 seconds when I tested it last year with a warmed up engine.

 

Thanks for this. After 71 days with my car parked at the dealership I sent an eMail to that address. Next day a generic response, 2 days later a response thanking me for speaking to them that day( I never spoke to them) and a day later a text from the dealership saying my part is being air shipped and to expect the car back this week. Not sure I'll get a chance to use the the HVCH any time soon as the morning temp is getting warm enough for me.

 

Got my heater replaced earlier this week, so we're back in business ladies and gents! Nice and warm cabin. Like Ivan33 just in time for t-shirt weather.

 

Do you know which fuse the fuse box controls this ?
Mine is out as well but I'd like to check the fuse first. If the unit is bad, I might just wait a couple of months for my oil change. It's warm here now and good S/R open time or A/C time.

 

Not sure. I didn't check. If you locate the fuse box in the engine compartment it should have a diagram underneath, or in the manual but it could be cryptic.

I did not confirm for sure the car was aware of any heating error until one day I sent a remote request from my phone, to the stopped car, to turn on climate control. Then, standing outside of the car, I could see on the dashboard the error about the climate system. That's when I finally made the appointment to bring it in. Until then no errors whatsoever despite months of the heat not working.

 

I finally got my one year service (9000 miles) last week and the diagnostic check confirmed the HCVH was broken. They said they ordered one. Do you remember what the time period was for yours to arrive?
Thx

 

Post 14 to Post 27, so just under a month. I waited 71 days. I was given the option to get my car back while I wait or get a free rental from them.

 

Yup, same thing happened to me. Actually failed within 2 months (it might have never actually worked, because I bought it during the summer, so the first time I went to use my heat, it didn't work). So I'm also not a very happy first time Volvo owner. What'd I get myself into?

 

Can confirm, mine is also not working. I will say, for a car with 6k miles on the ODO, not very confidence inspiring, owning out of warranty seems like an expensive endeavor.

 

same problem here with my 2022 XC90 recharge. I’m a first time Volvo owner and very unhappy that my first EV cannot be used in electric mode if I want to have the heat work. The part is back ordered and the dealer won’t give me a date on when it’s coming.

 

My Dealer ordered the part between four and five months ago. Yesterday he called me real excited that the part for 'MY' car had finally arrived. I made an appointment for the 18th to drop it off and a loaner will be made available to me.
And yes, I'll be very glad to get heat (instantly) via battery once more .

Having been in the business for 20 years in the past, I totally understand when a part supplied from a Vendor causes this much trouble. Volvo assembles the car from all of the vendor inventory. I am a bit concerned however that it took Volvo so long to realize almost each and every car with this system had the issue and it results in down time, loaners, and disgruntled customers. So no, I don't blame Volvo for the failure, but I do think Volvo dropped (ignored) the ball when it was apparent it was such a problem. Seems like they devoted every working moment to the issues '22 models and up are having re: Google integration to the Navigation and car operation. That's another story.

Will report back after the 18th and successful (or not) operation in cold weather.