Vehicle Electronic Testing


Grimmer Motors Hamilton offers FREE Electronic Tests (worth $90) when you spend over $49.

At Grimmer Motors, we believe that you have the right to know all the details about how your vehicle is running. This way, you can take control of your vehicle and help prevent unwelcome surprises.

Our goal is to build and maintain a long-term mutually beneficial relationship of trust with all our customers, so that you have complete peace of mind motoring.

Our unique, state of the art technology tracks and analyses your vehicle’s health. This includes your engine’s state of tune over time to help prevent excess fuel consumption, breakdowns, emissions and expensive engine and exhaust damage.

Vehicle Report

At Grimmer Motors, we use advanced Rennacs Scan Tools to create reports of your vehicle’s status. These reports give you an overview of your cars general health through several detailed graphs, tables and charts.

Our Electronic Tests can:

– Scan the vehicle’s system for fault codes.

  • The tests will show the self-diagnostic fault code information that we have been able to read from the vehicle. The vehicle manufacturer has designed fault codes to be stored in your vehicle computer memory if components go over a certain tolerance. They are used as a diagnostic guide for us.

– Detect “misfires” which:

  • Could cause excess fuel consumption.
  • Could damage expensive to repair / replace engine and exhaust components.
  • Could reduce engine power.
  • Cause a variety of problems that can cause damage when left unnoticed.

When a car’s faults remain undiagnosed, they can become worse, causing serious damage to the vehicle which could become expensive. Our electronic test tools can quickly detect imminent problems so that you have the choice of them being fixed immediately, ultimately saving you lots of time and money.

At Grimmer Motors, we believe that you have the right to know all the details about how your vehicle is running. This way, you can take control of your vehicle and help prevent unwelcome surprises.

Our goal is to build and maintain a long-term mutually beneficial relationship of trust with all our customers, so that you have peace of mind motoring.


Our Testing Equipment

Grimmer Motors uses a variety of electronic test equipment to diagnose errors in vehicles. This equipment allows us to give our customers the most advanced, in-depth vehicle tests available in Hamilton.

Main Diagnostic Tools

  • Rennacs Scan Tool
  • Rennacs Relative Compression / Battery / Alternator Tester
  • Rennacs Idle Cylinder Balance Tester
  • Rennacs Live Data Analysis System

Other Scan Tools

  • Hanatech Scan Tool with 4 Channel Digital Oscilloscope 
  • Hanatech Scan Tool
  • Carman Lite
  • Tech 2
  • Launch / Launch Pad 2
  • MUT – Mitsubishi
  • Snap On
  • Hybrid scan tool

Other Electronic Diagnostic Equipment

  • Auto Data
  • Pico Scope 4 Channel Digital Oscilloscope 
  • Handheld 4 Channel Digital Oscilloscope 
  • Wide Band Exhaust Sensor
  • Conductance Battery Tester
  • Carbon Pile Battery Tester
  • Electronic Vacuum Gauge
  • Vacuum Pump and Gauge
  • Electronic Exhaust Pressure Gauge
  • Electronic Timing Lights
  • Infrared Digital Thermometer

Come see us today to take advantage of our advanced vehicle electronic testing and scanning solutions.


Live/work in any of the following areas? Grimmer Motors could be extra convenient for you.

  • Fairfield
  • Enderly
  • Fairview Downs
  • Claudelands
  • Chartwell
  • Hamilton East
  • Chedworth
  • Central Hamilton
  • Forest Lake, Beerescourt
  • Frankton
  • Melville
  • Waikato

BOOK YOUR APPOINTMENT

Terms and Conditions

Rennacs Limited or Grimmer Motors staff may perform the electronic testing on your vehicle (if it is compatible) worth $90 with every purchase over $49 at Grimmer Motors (pricing may change). Electronic testing may include all or some of the following: Idle Cylinder Balance, Code Reading, Live Data scans plus recordings, Alternator, Battery, Relative Compression, Fuel Pump or any new tests under development by Rennacs Limited. Erasing codes is not included as a free service. The number and type of free electronic tests performed are at Grimmer Motors and Rennacs Limited sole discretion. Depending on your vehicle’s compatibility, Grimmer Motors may perform different tests to the ones shown. There may be occasions due to staff unavailability or lack of time that free electronic tests can’t be performed for you. In exchange for performing the free electronic tests, you give Grimmer Motors and Rennacs Limited irrevocable rights to use your vehicle’s data for their respective commercial benefits. The entire electronic testing, analysing and printing process can take 30 to 60 minutes. When possible a printout of the electronic testing results will be provided to you. If you do not want FREE electronic testing of your vehicle, then please let reception staff know when booking in.