Check testing equipment for leaks!

Select "Measurement" function on Diagnosis and Information System (DIS).

Set measuring range according to pressure sensor to 0-3.5 bar.

Increase pressure by 0.2 bar with pressure regulator on special tool 16 1 171.

Using special tool 13 3 010, disconnect delivery line from special tool 16 1 171 to tank filler neck.

Wait 60 secs.

Read off final pressure value and compare with starting pressure value.