How to display the outside temperature in a car

Written by michael roennevig Google
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How to display the outside temperature in a car
Most thermometers allow you to switch between Fahrenheit or Celsius readings. (Justin Sullivan/Getty Images News/Getty Images)

The majority of modern cars come with an inbuilt exterior thermometer as standard. This allows drivers to consult a readout on their dashboard that displays the temperature on the outside of the car. If you drive an older motor or have bought a new or secondhand car that doesn't boast an inbuilt exterior thermometer, you can pick up a temperature gauge accessory that's easy to install an read for next to nothing.

Skill level:
Moderately Easy

Things you need

  • Second reliable thermometer

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  1. 1

    Pick up a car thermometer accessory from a local garage, electrical retailer or online. As of May 2013, it was possible to buy one for less than £15 from retailers on eBay and from Amazon and the electronics specialist Maplin. Most car thermometer accessories will work with all vehicles, unless otherwise stated. Check a device's suitability for your car before making a purchase.

  2. 2

    Insert batteries into your device or connect it your vehicle's cigarette lighter connector as per the directions in its instruction manual. You can then mount your thermometer. Some come with sticky Velcro that can be used to secure your unit to your windscreen or dashboard, while others are supplied with frames/docks.

  3. 3

    Run the external temperature gauge sensor out of your vehicle as directed by your device's user guide. You may need to secure your sensor in your car's door sill, run it under your windscreen's frame and under your bonnet or through to the underside of your vehicle. Additional tools may be required as directed by your specific model's installation instructions.

  4. 4

    Make localisation adjustments such as selecting whether your device displays temperature readings in Fahrenheit or Celsius and change time and date settings as required. Once you're done, you'll be free to go for a test drive to check your new accessory's performance. After you've done so, return home to compare the exterior temperature displayed on your car thermometer with the reading of another temperature gauge you know to be accurate.

Tips and warnings

  • Placing your exterior temperature gauge too close to your engine could result in heat affecting your thermometer's readout.

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