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Eagle, Idaho 83616
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TripTek Tire Troubleshooting Guide

No signals are received from the sensors directly after the installation is complete.
Confirm that the antenna cables are connected to the receiver. If the cables are connected, check to see if the system has been programmed with the ID numbers of the sensors installed on the vehicle. Refer to the operator’s manual “Programming for Tire Sensors”.

Transmissions are not being received at a tire location after a sensor was replaced or a spare tire was installed.
The ID number for the sensor at the location is not programmed into the system. Program the ID number of the new sensor into its respective location in the system. Reference operator’s manual “Replace Wheel Sensor or Rotating Tires”. If the sensor in a tire does not respond during programming, dismount the tire from the wheel to confirm that the sensor was installed. If the sensor is present, but not functioning, replace it.

Pressure deviation alert activates on one or more tires at start up when the initial transmissions are received.
One or more tires are not properly inflated to the cold inflation pressure (CIP) setting in the system. It is possible that the affected tire has a puncture and is losing pressure. Confirm that the affected tires are inflated to the recommended amount as indicated on the vehicle’s Placard. If not, inflate or deflate the affected tires as required and investigate the cause of the pressure condition (was the tire improperly inflated after installation?). If the affected tires are properly inflated, confirm that the CIP setting in the system matches the recommended CIP values for the vehicle. See operator’s manual “Programming Tire Warning Setup Screens”.

Please note that the system software assumes that tires are inflated to the programmed CIP value at an ambient temperature of 65°F (18°C). If the actual tire temperatures are higher than 65°F, initial inflation pressures should be correspondingly higher.

Pressure deviation alert activated on one or more tire locations after a period of driving.
Confirm that the affected tires are properly inflated. If not, inflate or deflate the affected tires by the amount indicated in the alert and investigate the cause of the pressure condition. Keep in mind that the inflation pressure of a tire hotter than 65°F (18°C) should be higher than the recommended cold inflation pressure (CIP). If the affected tires are properly inflated, confirm that the CIP setting in the system matches the recommended CIP values for the vehicle. See operator’s manual “Programming Tire Warning Setup Screens”. If the programmed CIP setting matches the vehicle’s recommended CIP values, the systems ‘Slope’ setting may not be optimal. See operator’s manual “Programming Tire Warning Setup Screens”.

Tire pressure reading on the display does not match the pressure value obtained from a hand-held gauge for one or more tire locations.
This condition can be the result of an inaccurate hand-held pressure gauge, altitude, or because the wheel positions in the display do not correspond to the tires the sensors are installed in. To diagnose the problem:

1. Adjust the inflation pressures of all tires to their recommended cold inflation pressure (CIP) value using the hand-held gauge.

2. Drive the vehicle over 15 mph (24kph) to activate the sensors. If the system indicates that all tires are inaccurately inflated by approximately the same amount, the problem is being caused by an inaccurate gauge or the pressure differential caused by altitude. See “Solution: Inaccurate Gauge” below.

3. If the display shows approximately the same values as the hand-held gauge for all other tire locations, stop the vehicle at your installation facility and, without powering down the system, deflate one tire by approximately 5 – 10 PSI. Note: Once the vehicle has stopped moving, the sensors will stay active for 15 minutes before going into a sleep mode. You now have 15 minutes to diagnose the problem or the vehicle will need to be driven over 15 mph (24 kph) again.

Confirm that the display shows the reduced pressure at the corresponding wheel position. If it does not, the sensor installed in the deflated tire is not programmed to the correct wheel position in the receiver. If it does, that wheel position has been correctly programmed.

Repeat for all other tires on the vehicle that do not match pressures to determine which sensor ID numbers need to be reprogrammed. See “Solution: Sensor ID Programming” below. Re-inflate tires to the recommended cold inflation pressure (CIP).

Inaccurate Gauge
Most hand-held gauges have an accuracy rating of plus or minus 5 PSI. The tire system is far more accurate, measuring pressure to an accuracy of plus or minus 1 PSI. As a result, the temperature compensated pressure deviation values provided by the system should be used over the non temperature compensated values provided by the hand-held gauge. Inflate or deflate the tires until the pressure deviation value for all tires is 0 PSI (plus or minus 1 PSI). The tires will now be properly inflated.

Please note that since the sensors measure tire pressure from the inside of the tire, they are not influenced by changes in atmospheric pressure due to elevation. If tire pressure levels are set with a hand-held gauge in a high altitude region, the system will display somewhat lower pressure values than the reading provided by the hand-held gauge. For example, a tire inflated to its correct CIP in Denver CO (approx 5280 ft above sea level) as measured using an accurate hand-held gauge will show a -2.5 PSI difference on the system display as a result of the elevation.

Sensor ID Programming
Reprogram the system by performing a tire rotation function using the operator’s manual “Replace Wheel Sensor or Rotating Tires” or by using the operator’s manual “Programming for Tire Sensors” to reprogram the sensor ID numbers into the correct wheel positions.
Note: Do not forget to re-inflate the tires to their proper CIP values.

The System initiates a Signal Lost error at one or more wheel positions after a period of driving at interstate highway speeds.
Higher vehicle speeds can reduce the systems ability to capture data from the sensors. Check antenna rods and clean away any excessive dirt buildup. Straighten antennas if they are bent. Also, relocation of an antenna may improve the signal strength of the system. If the condition persists and the system has been in use for over 5 years under normal driving conditions, the battery in the sensor installed at the affected wheel position may be discharged. Replace the sensor.

One or more wheel positions on the display are slow in being received after starting a trip.
Transmissions are not being consistently received from one or more wheel positions. Sensors are designed to transmit within 15 seconds of the vehicle moving 15 MPH. To improve signal reception, check the antennas to confirm absence of dirt or damage and adjust their position so that they have a clear line of sight to the tires. Sensor signal strength may also be adversely affected by tire additive liquids. If the condition persists, replace the affected sensor.

High Temperature alert is activated at one or more sensor locations without a low pressure alert or warning.
Tire is irregularly hot. Radial ply tires normally operate well below the activation threshold of the high temperature alert. Therefore, if the high temperature alert is activated without an earlier under inflation alert, the cause of the problem is most likely radiated heat generated by a dragging or over worked brake drum. Investigate possible causes and correct the condition.

Low Pressure alert is activated at one or more sensor locations due to very low ambient temperatures.
Tire manufactures never recommend inflating a tire less than the specified cold inflation pressure. The beads of a commercial tire can unseat if its pressure gets too low resulting in a catastrophic tire failure. The general rule of thumb is to inflate a tire to the recommended cold inflation pressure at temperatures below 65°F.


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