Autel MaxiTPMS TS501 - Manual (Page 17)

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 Verify that the vehicle is OBD II compliant.
 Verify that the vehicle is equipped with TPMS.
 Verify the tool battery is sufficiently charged.
 Turn the ignition off and wait for about 10 seconds. Turn the
ignition back to on and continue the testing.
 Verify the control module is not defective.
Operating Error
If the scan tool freezes, then an exception occurs or the vehicle’s
ECU (Engine Control Unit) is too slow to respond to requests, do the
following to reset the tool:
 Reset the scan tool.
 Turn the ignition off and wait for about 10 seconds. Turn the
ignition back to on and continue the testing.