How to Troubleshoot the TPMS
Control Unit
The vehicle is equipped with TPMS (tire pressure monitoring system) and the system is controlled by VSA modulator-control unit.
System Indicator
The TPMS has the low tire pressure/TPMS indicator (A).

The Low Tire Pressure/TPMS Indicator
If the system detects low tire pressure in any of the four tires, the low tire pressure/TPMS indicator comes on, as well as the message indicator. It will keep being turned on until calibration starts.
CHECK SYSTEM (TPMS)
If a problem in the system is detected, the VSA indicator comes on, and CHECK SYSTEM message (TPMS) on the MID is displayed, and the low tire pressure/TPMS indicator comes on after blinking for about 75 seconds.
If VSA falls into error mode, TPMS also falls into error mode and stops all operation. If TPMS is during calibration, calibration will be suspended.

If the system is OK, the low tire pressure/TPMS indicator should come on when you turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, and then go off 2 seconds later. If they don’t, there is a problem with the system.
Condition for Data Rejection
Even if a system is normal, calibration or deflation detection is not performed during the following conditions.
Brake pedal is pressed.
While stopping.
While going slower than 31 mph (50 km/h) or cruising over 62 mph (100 km/h).
Short turn, abrupt acceleration, and abrupt slowdown.
In case speed variance of the right and left driven wheels is different (on sandy, gravel, extremely rough, snowy, or icy roads).
During operation of ABS, EBD, TCS, VSA.
Cornering radius of less than 150 m (492 ft).
Steep slope
Conditions When TPMS Will Not Operate Normally
In the following cases, false warning might occur or deflation might not be detected.
Non-recommended tires are used.
Tires with different wear level, different brand or different sizes are used.
If all four tires are not replaced with the recommended tires at the same time.
Calibration with non-recommended tire pressure.
Temporary spare tires or tire chains are mounted.
On sandy, gravel extremely rough, snowy, or icy roads.
With trailer towing.
With roof carrier.
With very heavy load.
With extremely unbalanced load.
Rapid deflation like a tire burst.
Change of The Threshold
When changing wheel size, it is necessary to change the threshold using the HDS. If it is not changed the system may not operate normally. This operation can be done through ABS/TCS/VSA menu in HDS.