ZE1 40 kWh Leaf service in Auckland

The car this page covers

The ZE1 is the second-generation Leaf, 2017 to 2024, with the 40 kWh pack, a 110 kW motor, e-Pedal and ProPILOT on some grades. It is a much newer car than the AZE0 in every way except one: the pack is still air-cooled with no active thermal management, and that single fact explains most of what owners ask us about.

How we refer to the four Leafs:

• Gen 1 Leaf ZE0 24 kWh, 2011–2012
• Gen 2 Leaf AZE0 24 kWh & 30 kWh, 2013–2017
• ZE1 40 kWh Leaf, 2017–2024 (this page)
• ZE1 e+ 62 kWh Leaf, 2019–2024

If yours is the long-range e+, that's the ZE1 e+ 62 kWh page.

Where these batteries sit now

These packs are holding up well. A 40 kWh ZE1 we read now is typically high 70s to high 80s percent state of health, so range is rarely the reason a ZE1 comes in. What matters on this car is heat rather than age: an air-cooled 40 kWh pack warms up under load and on rapid charges, and it has no way to shed that heat quickly.

That's what sits behind rapidgate. The first CHAdeMO charge of the day is quick; the second and third, on a hot pack, slow right down, sometimes to little better than a home charger. It is the battery protecting itself, not a fault, but it changes how you plan a long trip and it is worth knowing your car's actual behaviour rather than reading forum numbers. We read pack temperature and charge history alongside state of health so you can see it in your own data.

Bar count on its own isn't enough here either. We read the complete Enhanced Diagnostic Battery Report, SOH, then the individual cell-pair voltages, variances and cell resistance, because a weak cell group shows up in behaviour long before it shows up on the dash.

Faults we see on ZE1 40 kWh Leafs

• Rapid charging slowing down. Back-to-back CHAdeMO charges on a warm day taper hard. Before assuming that's normal for your car, it is worth checking pack temperatures, cell balance and the charge log, because a genuinely unbalanced pack behaves the same way and needs a different answer.
• 12V battery. Still the most common reason a Leaf suddenly does nothing, or lights the dash up with faults that have nothing to do with the real problem. It does no cranking, just constant small loads, and on an import it is often original or an unbranded replacement. First thing we test.
• Rear brakes seizing. The ZE1 uses its friction brakes even less than the older cars, especially with e-Pedal driving, so the rear calipers and slide pins corrode and stick. It is still the most valuable job on the car, and still a WOF failure.
• Squeaky brakes? A common complaint for EV owners but normally easily sorted by our team. Book in for a disc skim and pad de-glaze.
• Tyres and alignment. The pack sits low and in the middle, so the car weighs more than a petrol hatch its size, and the motor delivers everything from a standstill. Alignment out even slightly shows up as premature and uneven wear: one shoulder scrubbed off while the rest of the tread still looks fine. Imports arrive with alignment set for another country's roads, and Auckland kerbs and potholes do the rest. We check wear pattern, pressures and alignment at every service, because a wear pattern read early is a tyre saved rather than a set of tyres and a WOF fail.
• Strut tops. The front strut towers sit under the bonnet where road spray and rain collect, and on an ex-Japan car that has spent winters on salted and gritted roads this is one of the first places to show corrosion. Water sits around the top mount and bearing, the bearing dries out and rusts, and it announces itself as a knock over bumps, a creak or notchiness when the wheel is turned at low speed, and eventually a mount that has to be replaced rather than cleaned. Because it is a structural mounting point, heavy corrosion here is a WOF concern, not just a noise. Strut tops: we check, clean and treat and fit caps to cover so no more water ingress.
• ProPILOT and driver assistance. On cars that have it, the camera and radar need to be right for the systems to behave, and they are affected by windscreen replacement, alignment work and panel repairs. If lane keeping or cruise has started behaving oddly, that is a calibration question, not a driving-style one.
• Reduction gear oil. There is one gearbox and it does have oil in it. On an import it has very often never been changed. Recommended every 60,000 km. Unsure if yours has been done? Book in with the team today.
• Coolant. The charger and inverter loop has its own coolant with a service life. General workshops miss it because they are looking for engine coolant.
• Heat pump and air conditioning. Most ZE1s have a heat pump, and when it weakens the car quietly falls back on resistive heating and you pay for it in range. Weak heating and weak cooling are often the same fault.
• Japanese-market electronics. Japanese menus, navigation that no longer applies, and a telematics unit with nothing left to connect to. We convert the dash and instrument cluster to English and can add CarPlay.
• Charge port and lid. Weather on the port surround and the lid catch. Cheap to sort, annoying when it fails on a cold night.

What we check on a service

No oil change, no cambelt, no exhaust, a Leaf service is a different job from a petrol car. On a ZE1 we go through:

• Battery state of health, cell-pair balance, pack temperatures and stored fault codes, with a printed report
• 12V battery condition and charging behaviour
• Brakes stripped, cleaned and lubricated, and pad and disc condition
• Reduction gear oil level and condition, and coolant condition
• Brake fluid condition, and the brake system read for stored faults
• CV boots, driveshafts and joints for splits, grease loss and play
• AC charging at 6.6 kW and DC charging on CHAdeMO, with charge behaviour checked hot as well as cold
• Heat pump and air conditioning performance, and HVAC codes
• Driver assistance systems checked for stored faults where fitted
• Tyres, wear pattern, pressures and alignment
• Suspension, bushes and shock condition, and strut tops cleaned, treated and capped
• Cabin filter, wipers, lights and underbody inspection

A battery health check is included free with a full service.

WOF items these cars fail on

We're an MTA Assured and AA Approved workshop and do the WOF here, so anything we find gets quoted before we touch it.

• Rear brakes seized by regen, the number one item on a ZE1 WOF
• Tyre wear, instant torque and a heavy pack chew tyres, often unevenly
• Suspension wear, the extra weight shows up in bushes and shocks sooner than owners expect
• Warning lights, including anything the brake or driver assistance systems have stored
• Corrosion at the strut tops and underbody, worth a proper look on any ex-Japan car
• A tired 12V battery, which throws warning lights that fail an inspection even when nothing else is wrong

More detail on the Nissan Leaf WOF page.

Frequently asked

How often should a ZE1 40 kWh Leaf be serviced?

Recommended service intervals are 12 months or 15,000 km, whichever comes first. The brakes are the reason: with e-Pedal doing most of the slowing, the friction brakes seize if they are left alone.

Is rapidgate a fault?

No. It is the pack protecting itself from heat, because there is no active cooling to shed it. What is worth doing is confirming your car behaves the way a healthy ZE1 should, since an unbalanced pack looks the same from the driver's seat.

What state of health should my 40 kWh have?

High-70s to high 80s percent is the range we usually see. Well below that on a car of average mileage is worth investigating rather than accepting.

Does e-Pedal wear the brakes out?

The opposite problem: it barely uses them, so they corrode from disuse. That is why the brake service matters more on this car than on a petrol equivalent.

Why do the tyres wear out so fast?

Weight and torque. The pack makes a Leaf heavier than a petrol car its size, and the motor delivers full torque from a standstill. Add alignment that is out, which is common on an import, and the wear goes uneven as well as quick. Alignment checked at service, and pressures kept where they should be, is the cheapest maintenance on the car and it buys back a little range too.

Can a ZE1 40 kWh Leaf pass a WOF with a degraded pack?

Yes. Battery capacity is not a WOF item, so a tired pack does not fail an inspection. What fails these cars is seized rear brakes, tyres, suspension wear, lights and a 12V battery throwing warning lights.

Can a general workshop service a Leaf?

They can do the tyres, the brakes and the WOF. What they usually cannot do is read the pack properly, and there is no oil change to fall back on, so the jobs that actually matter, cell-pair balance, reduction gear oil, the charger and inverter coolant, HVAC and stored codes, tend to go unlooked at. That is the gap we fill.

Do you work on cars you didn't sell?

Yes. Most of the Leafs we service came from somewhere else.