What Does This Indicator Mean?
The Jetour Yellow Tire Pressure Monitoring System (TPMS) warning light illuminates on your instrument cluster when the vehicle’s Body Control Module (BCM) or dedicated TPMS module detects an abnormal operating pressure or a functional fault within one or more of your tires. Specifically, this yellow indicator—featuring a horseshoe-shaped profile with an exclamation point in the center—signals that tire pressure in at least one wheel has dropped approximately twenty-five percent or more below the manufacturer’s recommended cold inflation pressure, or that the system has suffered an electronic sensor failure. Jetour vehicles utilize either direct TPMS, which employs radio frequency (RF) transmitting pressure sensors mounted directly to the valve stems inside each wheel assembly, or indirect TPMS, which monitors wheel speed differentials via the Anti-lock Braking System (ABS) wheel speed sensors. When pressure drops, the tire’s structural deflection increases, altering its rolling radius and generating the warning signal to preserve vehicle handling, braking efficiency, and fuel economy.
Can I Still Drive with This Light On?
Because this indicator features a yellow severity rating, it signifies a non-immediate catastrophic failure, but it demands prompt attention and cautious operation. You can technically drive the vehicle short distances to reach a safe service area, but you should not ignore the warning. Operating a Jetour with significantly under-inflated tires severely compromises vehicle stability, increases stopping distances, and causes excessive heat buildup within the tire carcass due to high sidewall flexing. This extreme thermal cycling drastically accelerates tread wear and drastically elevates the risk of a catastrophic tire blowout at highway speeds. If the light is flashing initially upon vehicle startup before turning solid, it typically indicates a system communication fault rather than a pressure loss, but physical tire inspection remains mandatory.
Common Causes of the Warning
- Natural Ambient Temperature Fluctuations: Changes in weather and ambient temperature directly impact tire pressure, with every ten-degree Fahrenheit drop causing a loss of approximately one to two PSI in closed pneumatic systems.
- Pneumatic Punctures or Slow Leaks: Embedded foreign objects such as nails, screws, or damaged valve cores can cause gradual air loss over time, dropping tire pressure below the calibrated safety threshold programmed in the Jetour BCM.
- Direct TPMS Sensor Battery Depletion or RF Interference: The internal lithium-ion batteries powering the valve-stem-mounted pressure sensors have a finite lifespan (typically five to seven years), and internal battery failure or severe RF signal blocking will trigger the warning light due to lost sensor telemetry.
How to Diagnose and Reset It
To properly diagnose and clear the Jetour TPMS warning light, start by performing a manual pressure check on all four road tires—and the full-size spare if equipped—using a calibrated digital tire pressure gauge when the tires are cold. Compare your measured PSI values against the manufacturer specification placard located on the driver-side door jamb. If any tire is low, inflate it to the exact specified pressure using an air compressor. If all tire pressures are correctly set and the light remains illuminated, you may need a dedicated TPMS scan tool capable of reading 315MHz or 433MHz frequencies to trigger and read individual sensor IDs, identifying which specific sensor has failed or lost synchronization. Once physical pressures are corrected, many Jetour models require you to navigate through the multi-information display using the steering wheel controls to locate the TPMS reset or calibration menu, and hold the enter button until the system acknowledges the new baseline values and extinguishes the yellow warning indicator.