MajorCommonElectrical

Toyota Voxy: 2ZR-FXE Hybrid HV Battery Cell Degradation

2ZR-FXE Hybrid HV Battery Cell Degradation is a common electrical fault on the Toyota Voxy on the 2014 onward cars, and we rate it major. Putting it right costs $2,000 to $5,000 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 32 documented faults on the Toyota Voxy.

Vehicle: Toyota Voxy
Engine: 2ZR-FXE
Years: 2014 onward
Fuel: hybrid
System: Electrical

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

All Toyota Voxy faults32 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

The ZWR80-series Noah hybrid uses a NiMH high-voltage battery pack located under the rear seat. Individual cell modules degrade at different rates causing voltage imbalance across the pack, reducing usable capacity and triggering protection codes. A frequently overlooked accelerant is the HV battery cooling fan, which draws cabin air through a filter near the rear seat base; a clogged filter causes sustained battery overheating that significantly accelerates cell degradation and can cause premature pack failure.

What you would notice

Hybrid system warning light or Check Hybrid System message on dash
Fuel economy noticeably below factory specification
HV battery state-of-charge dropping faster than normal between journeys
DTCs P3000 or block-specific codes P3020 through P3027

How to check it

Where to look. Under rear seat (HV battery pack); cooling fan intake at rear seat base or lower B-pillar

Physically inspect the HV battery cooling fan filter located at the base of the rear seat or B-pillar — heavy clogging indicates the battery has been running hot. Request battery balance test data showing voltage spread across all modules under load; a spread greater than 0.3 V across blocks indicates a failing pack. Confirm the 12 V auxiliary battery is healthy as a weak 12 V battery can trigger false P3000 codes. If a workshop inspection is possible: Scan all hybrid-specific fault codes using a Toyota-compatible tool rather than a generic OBD-II reader.

What it costs to put right

$2,000 to $5,000 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 hybrid battery been professionally tested or any modules replaced?”
“When was the HV battery cooling fan filter last cleaned?”
“Are there any hybrid system warning codes currently stored?”

Now check the Toyota Voxy 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 published sources — owner forums, technical service bulletins, recall notices and workshop write-ups — held in our fault database. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them, and it is a starting point for an inspection rather than a manufacturer statement.

Toyota Voxy buyer questions

Is 2zr-fxe hybrid hv battery cell degradation serious on a Toyota Voxy?

We rate it major and common on the Toyota Voxy. The ZWR80-series Noah hybrid uses a NiMH high-voltage battery pack located under the rear seat. Individual cell modules degrade at different rates causing voltage imbalance across the pack, reducing usable capacity and triggering protection codes. A frequently overlooked accelerant is the HV battery cooling fan, which draws cabin air through a filter near the rear seat base; a clogged filter causes sustained battery overheating that significantly accelerates cell degradation and can cause premature pack failure.

How much does it cost to fix on a Toyota Voxy?

$2,000 to $5,000 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 Toyota Voxy years are affected?

Our research records this fault on the 2014 onward Toyota Voxy. 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.