Spongy Brake Pedal, With/Without Abs Operation (No Warning Lights Illuminated)
- Check brakelines or hoses, fittings, master cylinder, and calipers. If conventional brake system components are okay, go to next step. If conventional brake system components are faulty, see appropriate DISC & DRUM article for diagnosis.
- Bleed brake system. See BLEEDING BRAKE SYSTEM . Check brake system for proper operation. If brake pedal is still spongy, replace Hydraulic Control Unit (HCU).