MajorVery commonElectrical

GWM Haval H6: Overzealous ADAS: phantom braking, grabby lane-keep and driver-monitoring false alerts

Overzealous ADAS: phantom braking, grabby lane-keep and driver-monitoring false alerts is a very common electrical fault on the GWM Haval H6 on the 2021 onward cars, and we rate it major. Putting it right costs $0 to $600 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 7 documented faults on the GWM Haval H6.

Vehicle: GWM Haval H6
Years: 2021 onward
System: Electrical

This page covers the GWM Haval H6 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 H6 faults7 documented faults on this model

What you are looking at

No photograph available

We do not hold a verified photograph for this fault yet. We would rather show none than show a picture of something else.

What goes wrong

H6 driver-assist systems are documented as over-calibrated for AU/NZ roads: intrusive lane-keep steering inputs, driver-monitoring nagging within minutes of setting off, and CarsGuide owner reports of adaptive cruise unexpectedly braking mid-corner at highway speed. In September 2024 GWM publicly confirmed its Chinese engineers were rewriting ADAS/DMS software for New Zealand and Australia, with free updates promised for existing owners — so update status varies car to car. Not a safety recall, but an unsettling fault for buyers, and pre-update cars behave noticeably worse.

What you would notice

Steering tugging at lane markings on narrow roads
Fatigue/attention warnings minutes into a drive
Adaptive cruise braking unexpectedly on bends
Constant warning chimes for non-existent violations

How to check it

Where to look. Windscreen-mounted camera, front radar and driver-monitoring camera; software-wide

Drive a stretch of open road with lane-keep and adaptive cruise active, including a moderate bend — note any unexpected braking or steering tugs.
Count how many warning chimes you get in 15 minutes of normal driving, and check the settings menu to see whether systems stay off after a restart.
Ask the dealer to confirm the ADAS software version is the latest AU/NZ recalibrated release.

What it costs to put right

$0 to $600 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 free GWM ADAS/DMS software update announced in 2024 been applied?”
“Has the car ever braked or steered unexpectedly on the open road?”
“Which GWM dealer serviced it, and are software updates recorded in the history?”

Now check the GWM Haval H6 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.

Driven Car Guide NZ, 'GWM rewriting driver-assistance software for New Zealand models' (Sep 2024): drivencarguide.co.nz/news/gwm-rewriting-driver-assistance-software-for-new-zealand-models/
CarsGuide GWM Haval H6 problems page (2022 owner report: cruise control braking on highway corners): carsguide.com.au/gwm/haval-h6/problems
WhichCar 2025 GWM Haval H6 review (lane-keep intrusiveness, improved but still over-vigilant): whichcar.com.au/reviews/2025-gwm-haval-h6-review-updated-mid-size-suv

GWM Haval H6 buyer questions

Is overzealous adas: phantom braking, grabby lane-keep and driver-monitoring false alerts serious on a GWM Haval H6?

We rate it major and very common on the GWM Haval H6. H6 driver-assist systems are documented as over-calibrated for AU/NZ roads: intrusive lane-keep steering inputs, driver-monitoring nagging within minutes of setting off, and CarsGuide owner reports of adaptive cruise unexpectedly braking mid-corner at highway speed. In September 2024 GWM publicly confirmed its Chinese engineers were rewriting ADAS/DMS software for New Zealand and Australia, with free updates promised for existing owners — so update status varies car to car. Not a safety recall, but an unsettling fault for buyers, and pre-update cars behave noticeably worse.

How much does it cost to fix on a GWM Haval H6?

$0 to $600 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 H6 years are affected?

Our research records this fault on the 2021 onward GWM Haval H6. 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.

How do I check for it before I buy?

Drive a stretch of open road with lane-keep and adaptive cruise active, including a moderate bend — note any unexpected braking or steering tugs. Count how many warning chimes you get in 15 minutes of normal driving, and check the settings menu to see whether systems stay off after a restart. Ask the dealer to confirm the ADAS software version is the latest AU/NZ recalibrated release. Look here: Windscreen-mounted camera, front radar and driver-monitoring camera; software-wide