Scirocco 16v brake pressure valves Post Posted 19 December 2019, 4:30 PM #1624975 (In Topic #222720) steve1948 Settling In Dismantling Wondered if anyone took valve apart as my rear nearside mk4 callipers tends to lock up even under moderate braking,offside ok.what is difference internally between 16v and 1 on cabrio.? 0 guests and 0 members have just viewed this: None. Forum home Helllllpppp!!