Answers from your local Napier workshop to common vehicle questions. Find the question that sounds closest to your issue, click it, and read the quick answer first.
Servicing
Quick answer
For most vehicles, a service every 10,000 km or 12 months is a good rule of thumb.
More detail
Some vehicles have longer manufacturer service intervals, but in real-world driving, shorter servicing often gives the best long-term result. Short trips, stop-start driving, towing, hills, and older vehicles can all be harder on oil, filters, brakes, tyres, and cooling systems. Regular servicing helps pick up small problems before they become expensive ones.
What to do next
Check your service sticker, service book, or contact J.R Automotive if you are not sure when your vehicle is due.
Quick answer
Yes, many automatic transmissions benefit from regular servicing.
More detail
Some vehicles are described as having sealed or lifetime transmission fluid, but in real driving conditions, transmission fluid still wears, gets hot, and becomes contaminated over time. Transmission servicing can help with smoother shifting and long-term reliability, especially for vehicles used for towing, hills, heavy traffic, or high kilometres.
What to do next
Ask whether your vehicle is due for transmission servicing at your next service.
Quick answer
A WOF checks safety. A service maintains the vehicle.
More detail
A WOF inspection checks whether the vehicle meets minimum safety standards at the time of inspection. A service looks after maintenance items such as engine oil, filters, fluids, brakes, tyres, belts, hoses, and general vehicle condition. A vehicle can pass a WOF but still be overdue for a service.
What to do next
Keep up with both. They do different jobs.
Quick answer
Because many problems start quietly before you notice them.
More detail
Oil breaks down, filters block, fluids age, tyres wear, brakes wear, belts crack, batteries weaken, and small leaks can turn into bigger repairs. Regular servicing helps keep the vehicle reliable, safe, and less likely to surprise you with a large repair bill.
What to do next
Book routine servicing based on time and kilometres, not just when something goes wrong.
Oil & Fluids
Quick answer
Use the correct oil grade and specification for your vehicle. Do not guess. Or just call Jase and he will let you know.
More detail
Modern engines can be very particular about oil. The wrong oil can affect engine wear, oil pressure, timing chains, turbochargers, emissions systems, and fuel economy. The number on the bottle, such as 5W-30 or 10W-40, is only part of the story. Some vehicles also require a specific manufacturer approval or oil specification.
What to do next
Check your owner's manual, service information, or ask J.R Automotive before topping it up.
Quick answer
Check your oil about once a month, and before long trips.
More detail
Even a healthy engine can use some oil between services. Checking it regularly helps prevent low-oil damage, which can become expensive very quickly. Make sure the vehicle is parked on level ground. Some vehicles have a dipstick, while others use an electronic oil level display.
What to do next
If the oil level keeps dropping, or you notice oil leaks or smoke, book the vehicle in to be checked.
Quick answer
Most vehicles should have brake fluid changed about every 2 years.
More detail
Brake fluid absorbs moisture over time. Moisture can lower the boiling point of the fluid and contribute to corrosion inside the braking system. Old brake fluid can affect braking performance, especially under heavy braking, towing, hills, or repeated stop-start driving.
What to do next
Ask J.R Automotive to test the brake fluid during your service.
Quick answer
Yes. Coolant does not last forever.
More detail
Coolant helps control engine temperature and protects the cooling system from corrosion. Old or incorrect coolant can contribute to overheating, corrosion, leaks, blocked radiators, heater problems, and water pump issues. Different vehicles use different coolant types, so it is important to use the correct one.
What to do next
If the coolant is dirty, rusty, low, or unknown, book a cooling system check.
Tyres
Quick answer
Use the tyre pressure shown on the vehicle's tyre placard, not the number written on the tyre sidewall. If you are in a pinch and just want to put some air in the tyres, 36 psi is a safe place to start.
More detail
The tyre placard is usually found inside the driver's door opening, fuel flap, glovebox, or owner's manual. It tells you the correct pressure for your vehicle. The number on the tyre sidewall is usually the tyre's maximum pressure, not the recommended everyday pressure. Incorrect tyre pressure can affect handling, braking, tyre wear, and fuel economy.
What to do next
Check tyre pressures when the tyres are cold. If your tyres are wearing unevenly, the vehicle may need a wheel alignment or suspension check.
Quick answer
It could be tyre balance, tyre damage, wheel alignment, suspension wear, or brake issues.
More detail
A shake at certain speeds is often related to wheel balance or tyre problems. A shake when braking may point toward brake rotors or suspension movement. Ignoring a steering shake can lead to tyre wear and may affect safety.
What to do next
Book the vehicle in for a check, especially if the shaking is getting worse.
Quick answer
Uneven tyre wear is often caused by wheel alignment, tyre pressure, suspension wear, or driving conditions.
More detail
Tyres can wear on the inside edge, outside edge, centre, or in patches. Each wear pattern tells a different story. Uneven wear can reduce grip, increase road noise, and shorten tyre life.
What to do next
Have the tyres, suspension, and wheel alignment checked.
Warning Lights
Quick answer
It depends on the warning light. Red lights usually mean stop safely. Orange or amber lights usually mean get it checked soon.
More detail
A red oil pressure light, temperature warning, brake warning, or charging warning should not be ignored. Continuing to drive with some red warning lights can cause serious damage or become unsafe. An orange engine light, ABS light, airbag light, or traction control light may still allow the vehicle to drive, but the fault should be diagnosed.
What to do next
If the light is red, stop safely and call for advice. If the light is orange, book the vehicle in for a diagnostic check.
Quick answer
It means the vehicle's computer has detected a fault.
More detail
A check engine light can be caused by many things, from a minor sensor fault to a misfire, fuel issue, emissions fault, or engine management problem. A scan tool can read the fault code, but the code does not always tell the whole story. It points us in the right direction, then proper testing confirms the cause.
What to do next
Book a diagnostic check. If the light is flashing, avoid driving and call for advice.
General Repairs
Quick answer
New noises are worth checking, especially if they are getting louder or happen while braking, steering, or accelerating.
More detail
Squeaks, knocks, grinding, humming, rattles, and clunks can come from many areas: brakes, suspension, wheel bearings, belts, engine mounts, exhausts, tyres, or driveline parts. Some noises are minor. Others can become unsafe or cause more damage if ignored.
What to do next
Take note of when the noise happens: speed, braking, turning, bumps, cold start, or acceleration. That information helps us find the fault faster.
Quick answer
A burning smell should be checked, especially if it is strong or new.
More detail
Possible causes include oil leaking onto hot parts, slipping belts, overheating brakes, clutch smells, electrical faults, plastic touching exhaust components, or cooling system issues. Some smells are minor. Others can be serious.
What to do next
If you see smoke, warning lights, or the smell is strong, stop safely and call for advice.
Quick answer
No. Stop safely and turn the engine off.
More detail
Driving an overheating vehicle can cause serious engine damage. Overheating can be caused by low coolant, leaks, radiator faults, thermostat problems, water pump failure, cooling fans, blocked hoses, or head gasket issues. Do not remove the radiator cap when the engine is hot.
What to do next
Stop safely, let the vehicle cool, and call for advice.
Brakes
Quick answer
Not always, but brake noises should be checked.
More detail
Brake squeal can be caused by worn brake pads, dust, glazing, moisture, poor-quality pads, sticking calipers, or worn rotors. A grinding noise is more serious and can mean the brake pads are worn out or metal is contacting metal.
What to do next
Book a brake inspection. If the brakes feel weak, the pedal feels different, or the vehicle pulls to one side, stop driving and get advice.
WOF
Quick answer
The faults need to be repaired before the vehicle can pass its WOF.
More detail
A Warrant of Fitness checks that the vehicle meets minimum safety requirements at the time of inspection. If it fails, we will explain what needs fixing and why. Some faults are straightforward. Others may need further inspection before an accurate repair cost can be given.
What to do next
We can talk you through the failed items, explain what is urgent, and repair the vehicle so it can be rechecked.
Quick answer
Most vehicles in New Zealand need a regular WOF, but the exact period depends on the vehicle's age and type.
More detail
A WOF is a safety inspection. It does not replace servicing. A vehicle can pass a WOF and still be due for maintenance such as oil, filters, coolant, brake fluid, spark plugs, or transmission servicing.
What to do next
Check the WOF label on your windscreen. If it is nearly due, book ahead so you are not caught out.
Quick answer
Yes, J.R Automotive does WOF inspections for cars, trailers, and LAMS motorcycles.
More detail
A WOF checks key safety items such as brakes, tyres, steering, suspension, lights, seatbelts, structure, glazing, and other required components. For motorcycles, we carry out WOF inspections, but we do not focus on motorcycle repairs.
What to do next
Book your WOF before it expires, especially if you need the vehicle every day.
Air Conditioning
Quick answer
Maybe, but if the gas is low, there may be a leak.
More detail
Air conditioning systems are sealed. If the refrigerant level is low, it usually means the system has lost gas somewhere. Simply filling it may only be a temporary fix if the leak is not found. Poor cooling can also be caused by pressure faults, compressor issues, electrical faults, blocked cabin filters, fans, sensors, or blend door problems.
What to do next
Book an air conditioning check so the system can be tested properly.
Batteries & Starting
Quick answer
It could be the battery, but it could also be a charging fault or something draining power.
More detail
Batteries can fail with age, but other causes include alternator faults, loose connections, poor earths, lights staying on, electrical drains, or short trips that do not give the battery enough time to recharge. Replacing the battery without testing can sometimes miss the real problem.
What to do next
Book a battery and charging system test.
Quick answer
Check whether the dash lights come on, whether the engine cranks, and whether you hear clicking.
More detail
A no-start problem can be caused by a flat battery, starter motor, alternator, key issue, immobiliser fault, fuel problem, sensor fault, or engine mechanical issue. The symptoms matter. A car that cranks but will not fire is different from a car that does nothing when you turn the key.
What to do next
Take note of what happens when you try to start it, then call J.R Automotive for advice.
Quick answer
Try gently moving the steering wheel while turning the key. Do not force it.
More detail
Sometimes the steering lock puts pressure on the ignition barrel. Gently moving the steering wheel left and right while turning the key can release it. Other causes can include a worn key, worn ignition barrel, damaged lock, flat battery, gear selector not fully in park, or immobiliser issue.
What to do next
If the key still will not turn, stop forcing it and call for advice. Forcing it can make the repair more expensive.
Hybrid / EV
Quick answer
Yes, J.R Automotive can help with servicing and repairs on many hybrid and electric vehicles.
More detail
Hybrid and electric vehicles still have many regular service items, including brakes, tyres, suspension, cooling systems, cabin filters, 12-volt batteries, air conditioning, and WOF requirements. High-voltage systems need the correct training and care.
What to do next
Contact J.R Automotive with the vehicle make and model so we can confirm how we can help.
Older Vehicles
Quick answer
Yes. Older vehicles often need a more practical, hands-on approach.
More detail
Older vehicles may need attention to carburettors, ignition systems, cooling systems, oil leaks, belts, hoses, suspension wear, and general age-related issues. They may not have the same diagnostic systems as modern vehicles, so experience and careful testing matter.
What to do next
Tell us what the vehicle is doing, what has already been repaired, and how often it is used.
