Monday, December 9, 2013
How to Troubleshoot a Freightliner Air Pressure Sensor
Freightliner tractor trucks are used to transport goods around the country and for other heavy-duty tasks. Air pressure monitors are used to let the driver know whether or not the air pressure in one of the tires is too low for driving. If the Freightliner is driving on a tire in which the pressure is too low, the tire could blow. This increases the chance of losing control of the vehicle. You can troubleshoot an issue with your tire pressure monitor, but it will take a professional to replace it.
Instructions
- 1
Park the Freightliner on a level surface. The weight of the vehicle should be evenly distributed on all of the tires. Park near an air pressure machine, such as at a truck stop or large service station.
2Go to the first tire on your Freightliner that you think may have a defective pressure monitor.
3Make a note of the required pressure from the label on the tire. If you do not know the required pressure, contact the manufacturer or the tire retailer.
4Turn the key inside the Freightliner to the "Accessory" or similar position so the electrical system turns on. The trucks dashboard gauges need to be functioning so you can get a reading from the pressure monitor.
5Locate the valve stem on the tire and remove the cap from the stem. Use a small flat-head screwdriver to press down on the tip inside the valve stem to release the air out of the tire.
6Wait until the tire is about halfway flat and then check the gauges inside your truck. The pressure monitor should be lit. Replace the pressure monitor if it is not lit. Replace the air removed from the tire.
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