How to Troubleshoot the TPMS
Control Unit
The vehicle is equipped with TPMS (tire pressure monitoring system) and the system is controlled by the 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. It will keep being turned on until calibration procedure starts.
CHECK SYSTEM (TPMS)
If a problem in the system is detected, the VSA indicator comes on 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 performing calibration, calibration will be suspended.

If the system is OK, the low tire pressure/TPMS indicator should come on when you turn the vehicle to the ON mode, and then go off 2 seconds later. If they don’t, there is a problem with the system.
Conditions for Data Rejection
Even if the system is normal, calibration or deflation detection cannot be done during the following conditions.
Brake pedal is pressed.
While stopping.
While going slower than 28 mph (45 km/h) or cruising over 65 mph (105 km/h).
Short turn, abrupt acceleration, and abrupt slowdown.
Conditions where 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).
Driving on a steep slope
Conditions Where TPMS Can 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, model, type or different sizes are used.
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 Tire Pressure Threshold
When changing tire/wheel size, it may be necessary to adjust the tire pressure threshold using the HDS. If it is not adjusted the system may not operate normally. This operation can be done through the ABS/TCS/VSA menu in HDS.