New Instrument Voltage Regulator - Replacement in Hamilton
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New Instrument Voltage Regulator – Replacement in Hamilton

What does the instrument voltage regulator do?New instument voltage regulator Hamilton NZ

Most modern vehicles have a set of gauges that display speed, RPM, engine temperature and other important information to the driver. This set of gauges is called the instrument cluster. Modern vehicles clusters utilise several sensors to gather the information required to display this information. These sensors then send the information to your car’s onboard computer, which is connected to the instrument cluster.

Since the instrument cluster does not operate on the same voltage as the battery, the instrument voltage regulator is used to ensure the right amount of power is supplied to the gauges. This keeps the gauges working at all times. Although very rare, the instrument voltage regulator can fail. This can affect the operation of your speedometer, RPM tachometer, engine temperature, fuel gauge and other dash gauges, making your vehicle unsafe to drive. Malfunctioning gauges may also cause your car to fail its Warrant of Fitness.

Speedometer WOF requirements 


Symptoms of a faulty instrument voltage regulator:

  • Gauges not moving – A faulty instrument voltage regulator can cut off power to the gauges. This means that you will be unable to check the speed and RPM of your vehicle.
  • Gauges only working intermittently – The gauges may also stop working unexpectedly and turn on again. This can be caused by dry solder joints or damaged wiring or a loose connection.

If only one of your gauges is not working correctly, it is likely that a faulty sensor or gauge is the cause of your problem. Your car has many sensors which gather information such as engine rotations, fuel levels and engine temperature. If one of these sensors fails, its corresponding gauge will not work.



Dash Instrument Voltage Regulator Replacement in Hamilton

Is your car in need of a new dash instrument voltage regulator? If so, we can help! At Grimmer Motors, our team of skilled mechanics can fix all sorts of problems relating to the gauges in your car. Whether it’s a faulty regulator, a bad connection or damaged sensors, we can quickly diagnose the problem, find high-quality replacement parts and organise the fix of the problem for you.

Not being able to see the speed of your vehicle can create safety risks and will mean you will fail your WOF. For this reason, it is important that you have the issue fixed before an accident occurs. For instrument voltage regulator repairs and replacement in Hamilton, contact Grimmer Motors today!

Please Note  we don’t generally stock or supply just “parts only” for this service. We are a general automotive repair workshop. If you are able to bring your vehicle to us, we can diagnose the problem, find and fit the necessary parts, or organise the appropriate service for you.



Phone: 07 855 2037

Address: 998 Heaphy Terrace, Fairfield, Hamilton

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