V1.2 TECH550PRO
Page 17
June 2022
TECH550PRO USER GUIDE
R
ELEARN
I
NFORMATION
:
This contains extra information about the relearn for the selected vehicle, which can assist you if you have any problems.
An example would be for some Toyota and Lexus vehicles which use a summer and winter tire set.
After selecting a Relearn method, follow the instructions given by the tool to relearn Sensors.
As well as the pressure and temperature, we also display the “mode” of the sensor. In some cases, the mode cannot be
changed and is not important, but in some cases, it will need to be changed for the relearn to work.
For example, if sensors for a vehicle show “Park” or “Drive” they are already in the
correct mode. Otherwise use the “Mode Change” command in the Quick Access Menu. If
the sensors are shown as Ship, Off or Test mode, put them in Park mode, using the
“Mode Change” command in the Quick Access Menu
Press the
to access the Quick Access Menu and see the options available for the
vehicle requiring a Relearn. Options that are not required on a vehicle will not be displayed.
Special service advice for Toyota Models:
Toyota ECU
Reset
If at any time the vehicle TPMS Reset button is pressed with the new sensor IDs fitted,
the ECU OBD relearn will not work until the Toyota ECU Reset is selected (with the tool
connected to OBD). The TPMS Reset button should only be used to set new tire
pressures, and on some vehicles to change between winter and summer ID sets.
Special service advice for Kia and Hyundai Models:
Reset YD Sensor
For some Kia and Hyundai vehicles with the newer low line TRW YD sensors, this allows
you to put the sensors back into the correct mode (Sleep or Rest) to work with the
vehicle.
This specific Service advice will only appear if applicable for the preselected Make, Model and Year
combination.
Selected tire.
Processing order:
Left Front,
Right Front,
Right Rear,
Left Rear