Did you clamp the flexible pipes and crack the caliper bleed nipples to push the pistons back in when changing the brake pads or, did you let the fluid go back up through the ABS into the reservoir?
Is the fluid level ok in the reservoir?
Cheers, Kev
02 plate C5 2.2 Hdi Exclusive SE (now 170k miles 03/21).
Used to have:- Xantia 1.9 TurboD SX. 1996 Blue & 1998 Silver Activa. + 1992 BX TZD Turbo.