My 2018 XC60 T8 just threw the Hybrid System Failure warning. It stayed on for two days and then disappeared. The car has 16,000+ miles on it and prior to this has been flawless. All Hybrid/ICE functions appeared to work appropriately except the ICE seemed to come on more frequently when driving the car in Pure even though there was plenty of battery charge. Ambient temps were in the mid 50's so I don't think the ICE running is temperature related. It will be at the dealers on Wednesday for a dx. I'll post the results and error codes after the visit.

 

I experienced a Hybrid System Failure warning after a cold start the other day during cold winter weather (15 degrees F) in my 2016 T8 (45k miles). The failure warning was not accompanied by any noticeable defect in the hybrid driving systems. I was driving in pure mode, but the ICE did kick in for a bit as it often does on cold mornings, but eventually it reverted back solely to electric power. After turning the car off and restarting a few hours later the message had cleared. In the days leading up to this failure, I got a few failure warnings when I tried to turn on parking climate with the VOC app. I wasn't sure if this was connected to the hybrid system failure.

I took the car into the local Volvo dealer on the say that I received the hybrid system failure warning. They found there was a "fault" with the High Voltage Coolant Heater and replaced it. After replacement, the car would not start. They ran further diagnostics and found that there was also a "fault" with the A/C compressor, which they replaced. The dealer believes this has resolved the issue. I've been driving on it for a few days and have not expereied any recurrence of the failure warning and the parking climate is now working as before (until this 3g sunset gets me in a month or so).

I didn't have a tech explain it to me, but I'm guessing a failure of the coolant heater could generate a "hybrid system failure" notice because it is needed to warm up the battery in cold weather. I'm not sure why the heater and the a/c compressor would fail at the same time, or if perhaps the A/C compressor failed earlier but I didn't notice because I had not run it in several months.

As an aside, this was all fixed under an extended CPO warranty purchased through Steingold Volvo. The warranty paid out $1800 for parts and over $2,200 for labor for this particular repair, all told more than double the cost of the warranty itself.

 

I experienced a Hybrid System Failure warning after a cold start the other day during cold winter weather (15 degrees F) in my 2016 T8 (45k miles). The failure warning was not accompanied by any noticeable defect in the hybrid driving systems. I was driving in pure mode, but the ICE did kick in for a bit as it often does on cold mornings, but eventually it reverted back solely to electric power. After turning the car off and restarting a few hours later the message had cleared. In the days leading up to this failure, I got a few failure warnings when I tried to turn on parking climate with the VOC app. I wasn't sure if this was connected to the hybrid system failure.

I took the car into the local Volvo dealer on the say that I received the hybrid system failure warning. They found there was a "fault" with the High Voltage Coolant Heater and replaced it. After replacement, the car would not start. They ran further diagnostics and found that there was also a "fault" with the A/C compressor, which they replaced. The dealer believes this has resolved the issue. I've been driving on it for a few days and have not expereied any recurrence of the failure warning and the parking climate is now working as before (until this 3g sunset gets me in a month or so).

I didn't have a tech explain it to me, but I'm guessing a failure of the coolant heater could generate a "hybrid system failure" notice because it is needed to warm up the battery in cold weather. I'm not sure why the heater and the a/c compressor would fail at the same time, or if perhaps the A/C compressor failed earlier but I didn't notice because I had not run it in several months.

As an aside, this was all fixed under an extended CPO warranty purchased through Steingold Volvo. The warranty paid out $1800 for parts and over $2,200 for labor for this particular repair, all told more than double the cost of the warranty itself.

Nice to hear a real world scenario proving how valuable the VIP plans can be. Glad it paid off well


Michael Bernardo
Director of Marketing
Steingold Volvo Cars
(401) 723-4700 x126
michael.bernardo@steingoldvolvocars.com
www.steingoldvolvocars.com

 

@withasigh

See my posts 19-22 in Hybrid battery not showing full charge.

https://r.tapatalk.com/shareLink/to...09/&share_type=t&link_source=app[/URL]"]Hybrid battery not showing full charge?

I experienced what seems to be similar issues as you with my HVCH (shorted/fault) and a/c compressor (shorted/fault) 1 1/2 years ago. However, my car did not display any error message in DIM.


Sent from my iPhone using Tapatalk Pro

 

Ya a few times, in my case a vehicle restart and a charge made it go away.

In others, it took new hybrid modules, updates, etc..

Message seems to be generic.

Sent from my SM-G955U using Tapatalk

 

Crazy thing is I just had a module changed out.



Sent from my iPhone using Tapatalk

 

I had something like that when the motor generator failed.

 

I am wondering if possible to design the T8 that in case of hybrid system failure, still possible to drive it like a T6? At least don't need a tow truck to rescue.

 

had the same issue when they replaced my IGM take it back in and have them recalibrate the IGM, it fixed my problem .

mind you I just had the error, everything in the car worked fine, including the hybrid system.

 

I just had the problem this weekend also. I was 70 miles away from the closest dealer and on vacation. Error cleared after charging it a bit and waiting overnight. Car was working correctly the whole time. Will see what the dealer comes up with during the service appt.


Sent from my iPhone using Tapatalk

 

I got this error today, just after a total upgrade done on July 27. Everything works fine,. Will let dealer to take a look.

Sent from my SM-N910W8 using Tapatalk

 

I too have had this problem here in the UK.

After a dozen trips or so to the dealer, the problem has finally got resolved.

My advice to you is not to get fobbed off by any talk of a "software upgrade". This is not a SOFTWARE problem in spite of what the dealer will likely tell you.

After multiple "software upgrades on my car and at my insistence, the IGM module got changed under warranty and , hey presto, no more error messages!

Bear in mind that the T8 does not have an alternator to charge your 12 V battery, therefore whenever the Hybrid system fails , your 12 V battery is not being recharged and will deplete faster than you can imagine.

Your are very likely to be left on the roadside as the car will go into limp mode.

Admittedly, the module costs several thousand quid and your dealer will try very hard not to change in it.

Good luck.

 

Endee,

Thanks for sharing. Yes they did in fact claim it needed a software patch to resolve the hybrid system failure. Its been over 3 weeks at the shop so far with no communication from the dealer whatsoever except for when I called to ask at week 2. Interestingly, this is not the first time I've had to take the car in for dashboard alerts. Within days of purchase, the dashboard screen began to show a lit engine block icon. The dealer fixed that, but later it came back. They fixed it again. Now the hybrid system failure message. The car had a couple thousand miles on it when I bought it "new" from the dealer.



Sent from my iPhone using Tapatalk

 

Yes, I got the message Friday, drove to the dealer service department and was told because of staff shortages I would have to bring it in Thursday, Aug 10.
What is the IGM?

 

Inverter generator module, the silver item under the hood with the high voltage orange cables connected to it.

Sent from my iPhone using Tapatalk

 

Car in garage. I was told that IGM cooler valve needs to be replaced. Parts on the way.

Sent from my SM-N910W8 using Tapatalk

 

Does the IGM cooler valve have a part number and is there a website for that part?
I might need to inform my service technician.

 

will report once I get invoice.

Sent from my SM-N910W8 using Tapatalk

 

Ugh...T8 bricked...16 mos in no problems



This happened to me yesterday, then I got 12V battery failure -do not turn off vehicle...at the dealer now...seems to be this IGN module but they are running all tests and software now.....

so dissapointing,..trouble free till now...10000 miles.,,,,cie la vie

 

My concern is that these problems with the IGM etc may have taken a permanent toll on the life of the battery, or perhaps on other components. Is there any way to test whether the battery has suffered ?


Sent from my iPhone using Tapatalk

 

Anyone seen this error ?

I have a thread about this error and my month long experience. In my case they ended up replacing the hybrid battery, not the IGM. I asked about the IGM and they said my vehicle was not on that recall list.

 

Invoice attached

Sent from my SM-N910W8 using Tapatalk

 

Unfortunately, it came back.


Sent from my iPad using Tapatalk

 

Yeah so this just happened to me last week while I was on vacation of course.

My T8 is 18 months on the road (10000mi) and NO issues (except Sensus restarts).

Started the car (bright hot morning) was on my way 2 minuntes when I received an error message that said "hybrid system failure" immediately followed by "12 low battery failure do not turn vehicle off" this resulted in the car engaging in a low speed limit governor mode. Fortunately,I was minutes from my home so I returned there and parked the vehicle in front of my house. I then called Roadside Assistance who towed the vehicle( that is a WHOLE other story ) to the local dealer. The dealer could not start the car, get their computer to even "see" the car for day 1. Day 2 they had it on the charger overnite they were able to update the car.Day 3 stress tests, road tests etc....returned the car to me and all is good... an nail biting ride home with 3 dogs on board was no" fun"

I have ZERO CONFIDENCE that this event will not recur...and that is a BIG problem for a car to commute 50 miles to work each day. The problem is random and asymptomatic..so that is not a way for ANY luxury car ot behave...Im out of the T8 variants and am negotiating for a "normal" XC90 ...stay tuned.

 

Yeah so this just happened to me last week while I was on vacation of course.

My T8 is 18 months on the road (10000mi) and NO issues (except Sensus restarts).

Started the car (bright hot morning) was on my way 2 minuntes when I received an error message that said "hybrid system failure" immediately followed by "12 low battery failure do not turn vehicle off" this resulted in the car engaging in a low speed limit governor mode. Fortunately,I was minutes from my home so I returned there and parked the vehicle in front of my house. I then called Roadside Assistance who towed the vehicle( that is a WHOLE other story ) to the local dealer. The dealer could not start the car, get their computer to even "see" the car for day 1. Day 2 they had it on the charger overnite they were able to update the car.Day 3 stress tests, road tests etc....returned the car to me and all is good... an nail biting ride home with 3 dogs on board was no" fun"

I have ZERO CONFIDENCE that this event will not recur...and that is a BIG problem for a car to commute 50 miles to work each day. The problem is random and asymptomatic..so that is not a way for ANY luxury car ot behave...Im out of the T8 variants and am negotiating for a "normal" XC90 ...stay tuned.

Fully agree with you. My T8 is still drivable. It lost the electric range after I had drove few hundred KM using ICE (I should have about 50% power leftover).
Not sure what is the next.

 

I had my vehicle in for the engine light problem with the hybrid system failure.
The dealer gave me a software upgrade and upgraded the maps.
Of course I had to reconfigure my my options and lost my map addresses.

 

If you have a T8 that is either a MY16 or an early MY17, you should have these TJs and SBs checked out and performed:

1. IGM replacement pursuant to TJ 31949 and QB 32-S39938 (which may need to be ordered).
2. Service Action 39816 which is the VDDM PBL Upgrade.
3. Remote Start with part Number is 31678916 and the relevant bulletins are QB S39820 and TJ32440. Although optional, it is best to get this feature installed sooner than later.

The IGM TJ is no longer limited to certain IGM serial number-specific - just chassis and structure week. Mine was upgraded in May 2017 with ~15K then. I am coming up on 19K with my T8 and have never had the hybrid system failure error. I have no concern or anxiety with the T8 FWIW - especially after the updates. (Knock on wood).

 

I have had this issue three times in August, 2017. The dealer tried to fix it two times and now it is in the garage for their third try.

 

I was told that Volvo developed a special software patch to change the parameters for my T8 and this patch will be included in the next release. I have my T8 back today and will see whether it pops up again. Fingers crossed!

 

Add me to the list as this error flashed on my dash today. Dropped it by the dealer this afternoon and gave them the whole list of IGM service actions and TJ's. We will see what happens....

Also in for 20K service, Dash leather, b-pillar road noise TJ, Sensus software update, front brake noise TJ, And Ambient temp TJ.

Sent from my iPhone using Tapatalk

 

Please let me know whether they apply b-pillar road noise TJ for you. I'd like to have it done as well.

Thanks!

 

Hybrid System Failure apparently caused by cooling valve error. No IGM replacement. All they did was reset it.
Entire dash Replaced; both B pillars sound insulation added, front brake pads replaced, ambient temp sensor replaced.


Sent from my iPhone using Tapatalk

 

Hybrid System Failure apparently caused by cooling valve error. No IGM replacement. All they did was reset it.
Entire dash Replaced; both B pillars sound insulation added, front brake pads replaced, ambient temp sensor replaced.

Sent from my iPhone using Tapatalk

My dealer had fixed the cooling valve as well. That was the first time fix. However, the issue is back the day before yesterday. I will let them take a look tomorrow which will be the fourth time visit for this within 30 days.

Sent from my iPad using Tapatalk

 

Im done with the "adventure" of this T8 2016...done....the ghost of my Dad is in my head saying "never buy a car first year"