XC90 T8 Electric Drive Problems Glitch

Paulj1 · Nov 30th, 2018, 11:59

Hello...

anyone else having/had an issue when on electric drive, with the temperory loss of motive power ? its pulses, you loose 5/10mph then it comes back on or engine cuts in ?

It happens at low speed/high torque so starting off from start or going slow up a hill.

Dealer says it may need a new rear axle.... warranty here we come !!

PAul

PaulBendall · Nov 30th, 2018, 13:35

No issues to date with mine. How old is the car and does it do it in all driver modes e.g. Pure?

Milliner · Nov 30th, 2018, 13:42

A few on here, myself included have highlighted what feels like a loss of power when you really put your foot down and the hybrid system switches from electric to the ICE. More notable when trying to nip out of a junction - feels like nothing is happening for a second or two then, whoosh, you're away.

Never experienced a loss of power that causes me to lose speed though, only that there's a delay in acceleration.

Hopefully it's just a software/calibration issue affecting the synchronisation of the two drive chains.

BillyJay · Nov 30th, 2018, 16:38

Quote:

Originally Posted by Milliner

A few on here, myself included have highlighted what feels like a loss of power when you really put your foot down and the hybrid system switches from electric to the ICE. More notable when trying to nip out of a junction - feels like nothing is happening for a second or two then, whoosh, you're away.

I have a T6 at the moment and there is always a bit of hesitation, even though it has Polestar. You expect lag with a turbo but not with a supercharger so maybe the combination doesn't work too well. My previous car was a Jaguar XKR which was supercharged and it pulled away with no lag or hesitation at all.

Paulj1 · Dec 5th, 2018, 17:52

Update on this, defo an issue, basically there is a electric clutch in front of the electric motor on the rear axle, it is guffed.... parts on order.

Dealer used EC? acronym, clearly a known issue as theyve done one before, and much documentation from volvo on it. Hybrid technician said it a hell of a job, 7 hours on book, more like 10/11 hours minimum....

At least its being sorted....

Anyone seen anything on this on this or other forums ?

Director76 · Dec 7th, 2018, 01:06

Quote:

Originally Posted by Paulj1

Update on this, defo an issue, basically there is a electric clutch in front of the electric motor on the rear axle, it is guffed.... parts on order.

Dealer used EC? acronym, clearly a known issue as theyve done one before, and much documentation from volvo on it. Hybrid technician said it a hell of a job, 7 hours on book, more like 10/11 hours minimum....

At least its being sorted....

Anyone seen anything on this on this or other forums ?

Several ERAD failures reported on ‘the American site’ and a
Handful on here. Electric drive / motor / axle / clutch thingy I believe!

Paulj1 · Dec 9th, 2018, 11:11

ERAD that’s it.... got to a point where it’s now unsafe to drive, parts due in on 17th....

volvo for ever · Dec 15th, 2018, 11:45

when it being repaired??hopefully before christmas

Philip Fisher · Dec 15th, 2018, 17:35

Quote:

Originally Posted by Paulj1

ERAD that’s it.... got to a point where it’s now unsafe to drive, parts due in on 17th....

I heard a story that these were big bucks....

Haldex · Dec 15th, 2018, 19:34

Quote:

Originally Posted by Philip Fisher

I heard a story that these were big bucks....

You bet. And there’s dozens of failures reported on swedespeed..

Nov 30th, 2018, 11:59	#1
Paulj1 Junior Member Last Online: May 13th, 2021 23:48 Join Date: Jan 2016 Location: Glasgow	XC90 T8 Electric Drive Problems Glitch Hello... anyone else having/had an issue when on electric drive, with the temperory loss of motive power ? its pulses, you loose 5/10mph then it comes back on or engine cuts in ? It happens at low speed/high torque so starting off from start or going slow up a hill. Dealer says it may need a new rear axle.... warranty here we come !! PAul

Nov 30th, 2018, 13:35	#2
PaulBendall Junior Member Last Online: Yesterday 19:45 Join Date: Jul 2018 Location: Eastbourne	No issues to date with mine. How old is the car and does it do it in all driver modes e.g. Pure? __________________ - MY24-XC60 T8 Ultimate (Subscription aka Care) Black Edition, Onyx Black, Blond/Charcoal Interior. - [Previously] MY19-XC60 T8 Inscription Pro. Crystal White. 22" 5 Dbl Spoke Wheels. Blond/Charcoal, Metal Inlay.

Nov 30th, 2018, 13:42	#3
Milliner Member Last Online: Yesterday 15:10 Join Date: Feb 2017 Location: Newcastle	A few on here, myself included have highlighted what feels like a loss of power when you really put your foot down and the hybrid system switches from electric to the ICE. More notable when trying to nip out of a junction - feels like nothing is happening for a second or two then, whoosh, you're away. Never experienced a loss of power that causes me to lose speed though, only that there's a delay in acceleration. Hopefully it's just a software/calibration issue affecting the synchronisation of the two drive chains. __________________ XC90 T8 Ultimate (Dark) MY23. Denim Blue. Last edited by Milliner; Nov 30th, 2018 at 13:48.

Dec 5th, 2018, 17:52	#5
Paulj1 Junior Member Last Online: May 13th, 2021 23:48 Join Date: Jan 2016 Location: Glasgow	Update on this, defo an issue, basically there is a electric clutch in front of the electric motor on the rear axle, it is guffed.... parts on order. Dealer used EC? acronym, clearly a known issue as theyve done one before, and much documentation from volvo on it. Hybrid technician said it a hell of a job, 7 hours on book, more like 10/11 hours minimum.... At least its being sorted.... Anyone seen anything on this on this or other forums ?

Dec 9th, 2018, 11:11	#7
Paulj1 Junior Member Last Online: May 13th, 2021 23:48 Join Date: Jan 2016 Location: Glasgow	ERAD that’s it.... got to a point where it’s now unsafe to drive, parts due in on 17th....

Dec 15th, 2018, 11:45	#8
volvo for ever Premier Member Last Online: Feb 4th, 2023 15:10 Join Date: Apr 2015 Location: uk	when it being repaired??hopefully before christmas

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