If this appears on the display, it means the monitor has lost the signal from one or more transmitters. This issue needs to be addressed when convenient, preferably before leaving on a trip, or at the next rest stop or campground, etc.
Below are some potential reasons you may be seeing this alert.
- Booster: Your booster may not be functioning. All TireMinder systems come with a booster included, unless otherwise indicated. Please check that it is installed properly, as recommended here: TireMinder Signal Booster Installation Instructions.
- Antenna: Your antenna may not be fully extended, causing weak reception. Note: This does not apply to the Smart TPMS or TM-77.
- Batteries: Your transmitter batteries may need to be replaced. You should change your TireMinder transmitter batteries every 9 to 14 months.
- Damage: One of the transmitters has been damaged or lost.
- Electronic interference: With the constant addition of new wireless products (many running at 433 MHz), it is possible that the TireMinder signal is being interrupted by electronic interference. If the signal comes back or is lost intermittently, you can rest assured the loss is due to such interference. 90% of this problem is cured by using the booster. Is yours installed with a green LED glowing? If so, and all other possible signal loss reasons have been eliminated, consider moving the booster to a more central location.
- Distance: Under normal operating conditions, distance is not an issue if you have installed the booster. At the same time, extreme cold and low transmitter battery (under 3 volts) power will shorten the operating distance even with a booster installed.
- Missing vehicle: “no5 (S)”: The appearance of the “no5 (S)” is inevitable when a towed vehicle/trailer is separated from the towing unit unless you implement the unique “Disconnect Mode”
If you do not use the “Disconnect Mode” but are aware you left the vehicle behind, you may simply ignore the warnings.
When the two systems are re-united, the monitor will pick up the missing tires automatically. This usually happens within the first 20 minutes. If you need them to re-connect immediately, simply loosen (depressurize) and tighten (re-pressurize) the transmitters on any missing wheels.
Our Recommended Alternative: Put the unit in the full Auto-Search Mode. Auto-Search Mode allows the TireMinder TPMS to completely “erase” all previous tire pressure and temperature readings and actively find new, updated readings.