Abs light is on! The brake light and battery light is blinking at the same time.

Check your charging system. Most ABS systems require over 12 volts to operate properly, also Nissan/ Infiniti vehicles will have Brake light and Battery light to come on at the same time when alternator goes bad. May all be related.

Brakes JUST done? Check fluid level and float switch, check speed sensor wiring. Get ABS codes read and maybe that will help point in the right direction.