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S5, Sport On, DSC M-track
Join Date: Jun 2008
Location: Auckland, New Zealand
Posts: 1,434
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DSC Pressure sensor (one of the two on the brake master cylinder).
Basically measures brake pressure - most likely the one closer to the firewall that's failed (the bitch one to take out).
If you plug it in the GT1 one sensor will show pressure whilst the other show 0psi
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