MajorCommonElectrical

GWM Haval Jolion: 12V battery drain and infotainment freezes; hybrid battery/EV-mode faults on HEV

12V battery drain and infotainment freezes; hybrid battery/EV-mode faults on HEV is a common electrical fault on the GWM Haval Jolion on the 2021 onward cars, and we rate it major. Putting it right costs $200 to $7,000 at New Zealand independent workshop rates. Below is what goes wrong, the symptoms to notice on a test drive, where to look, and what to ask the seller before you hand over any money. It is one of 5 documented faults on the GWM Haval Jolion.

Vehicle: GWM Haval Jolion
Years: 2021 onward
System: Electrical

This page covers the GWM Haval Jolion as a model. Some faults only affect particular engines or build years — enter a plate below to narrow the list to one car.

All GWM Haval Jolion faults5 documented faults on this model

What you are looking at

No photograph available

We do not hold a verified photograph of the 12V battery yet. We would rather show none than show a picture of a different part.

What goes wrong

Australian owner reports document the Jolion's 12V battery draining flat if the car sits unused for four to five days, with some owners disabling the wireless charger and comfort-entry features to stop the parasitic drain; the touchscreen is also reported to lag or freeze, needing a 10-second power-button reboot or dealer software patch. On hybrids, CarsGuide owner reports include a car that stopped switching into electric mode and a hybrid battery failure where warranty was denied because ride-share use had passed the 150,000km commercial-use cap. No recall exists; fixes are software updates, a new AGM battery, or on hybrids potentially major battery work.

What you would notice

Flat 12V battery after the car sits a few days
Touchscreen freezing, lagging or rebooting
Hybrid staying in petrol mode, never running electric
Hybrid system warning lights

How to check it

Where to look. 12V battery in engine bay; centre touchscreen; hybrid traction battery under the boot/rear seat (HEV)

Ask for the car to be left unstarted for a day or two before viewing, then watch it start from cold — hesitant cranking or a battery warning is telling. Work the touchscreen hard (camera, CarPlay, navigation simultaneously). On a hybrid, drive gently in traffic and confirm the EV indicator shows it actually running on battery, and check the trip computer's fuel economy against the ~5L/100km claim.

Parts involved: 12V battery.

What it costs to put right

$200 to $7,000 at New Zealand independent workshop rates. That is for this job on its own, not for the car.

An estimate, in NZD, for the repair as normally carried out. What a specific car costs depends on which part has failed and what it damaged on the way — treat this as the floor for a negotiation, not a quote.

Ask the seller

“Has the 12V battery ever been replaced or gone flat?”
“Was the car ever used for ride-share or business (this caps the warranty at 150,000km as commercial use)?”
“Have any infotainment software updates been done, and does the hybrid warranty balance transfer?”

Now check the GWM Haval Jolion you are actually looking at

Everything above is true of the model, and it is free. What it does not tell you is whether THIS car has been looked after: its odometer history and whether the reading has ever gone backwards, whether there is still money owing on it, whether it has been reported stolen, how many owners it has had and what it is really worth today. That comes from the official records for that plate. Enter the plate for the free details, or get the full history and a market valuation from $13.49.

Not sure what you would be paying for? See what a full KickTyres check includes.

Where this comes from

The failure described above is documented in the sources below. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them.

CarsGuide GWM Haval Jolion problems page (2023 hybrid EV-mode failure and hybrid battery warranty denial; electrical woes noted): carsguide.com.au/gwm/haval-jolion/problems
ProductReview.com.au Haval Jolion/H6 hybrid Q&A threads (owner reports of 12V drain to 40% after 4-5 days parked, disabling wireless charger to stop drain): productreview.com.au/listings/haval-h6-ultra-hybrid/q-and-a
CarsGuide 'GWM problems' hub (pattern of electronic issues across Haval range): carsguide.com.au/gwm/problems

GWM Haval Jolion buyer questions

Is 12v battery drain and infotainment freezes; hybrid battery/ev-mode faults on hev serious on a GWM Haval Jolion?

We rate it major and common on the GWM Haval Jolion. Australian owner reports document the Jolion's 12V battery draining flat if the car sits unused for four to five days, with some owners disabling the wireless charger and comfort-entry features to stop the parasitic drain; the touchscreen is also reported to lag or freeze, needing a 10-second power-button reboot or dealer software patch. On hybrids, CarsGuide owner reports include a car that stopped switching into electric mode and a hybrid battery failure where warranty was denied because ride-share use had passed the 150,000km commercial-use cap. No recall exists; fixes are software updates, a new AGM battery, or on hybrids potentially major battery work.

How much does it cost to fix on a GWM Haval Jolion?

$200 to $7,000 at New Zealand independent workshop rates. That figure is for this job on its own. A car showing the symptoms on this page is usually worth either walking away from or negotiating down by at least the repair figure.

Which GWM Haval Jolion years are affected?

Our research records this fault on the 2021 onward GWM Haval Jolion. Build dates move around, especially on imported cars, so treat the range as the years to look hardest at rather than a guarantee either way. The official records tell you the exact build and first registration date for the car in front of you.