T e c h 4 0 0 S D E
User Guide R.59
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P a g e
T
OOL
P
OSITIONING
Proper tool positioning is important to insure sensor activation and decode.
Place the Tech400SDE on the tyre, at the TPMS sensor, pointed toward the
sensor location as shown below. Do NOT touch the metal rim. The tool needs
to point through the rubber at the sensor.
Sensor Activation/ Test
LF Activated Sensors
To test a sensor the tool should be placed alongside the valve stem
and the ‘Test’ key pressed.
(Note with Ford Banded sensor’s, the tool should be held 180°away from
the stem.)
Non-LF activated sensors (some Beru sensors up to 2009)
If the sensor requires rapid tyre deflation (of the order of 10psi or 0.5bar), then
deflate the tyre and place the tool alongside the stem while pressing the test
key.
During testing, the screen confirms the sensor type being tested and displays a
progress bar. The progress bar shows the maximum possible time for a
successful read.
Different makes of TPM respond at different speeds/ time intervals.