Brake Trouble, The amber and red brake/abs lights are on. The pedal is extremly hard to depress. Where should I start?

SOURCE: brake and ABS warning lights on, trac off on.

You may have a bad abs controller. You need to get the code for the abs light from a shop or auto parts store.

SOURCE: Renault Megane, 1999.

hey hows it goin im sure ur problem is at the the back its probably a bare wire or the connection is faulty where it geos in to the lamp just take out the lamps and check the wiring and the connections it should be easliy spotted if the car is wired up for trailer lights check that plug as well

SOURCE: 2001 Mercury Grand Marquis brake and ABS dash lights on and off

The red brake light is the key here. That usually indicateds a hydraulic problem. Check you fluid level in master cylinder and see if it is low. Also the level indicator sensor there in the master cylinder maybe sticking or corrioded. If ABS sees the red brake light it will shut off and turn on the ABS light,also traction control would be disabled as well.

SOURCE: 2003 Sonoma SLS 6 cylinder 4.3L ABS issue

I WOULD NOT KEEP DRIVING IT.WHEN ABS LIGHTS AND BRAKE LIGHTS COME ON.YOU HAVE BRAKE FAILURE. TOW IT TO DEALERSHIP HAVE IT SERVICE.AND CHECK THE ABS BRAKES SYSTEM .BECAUSE ABS BRAKE SYSTEM IS NOT A HOME FIX.BECAUSE THE ABS HYDRAULIC MODULATOR UNIT HAS LOWER FROM HOME POSITION .IN ORDER TO MOVE THE MASTER CYLINDER FROM UNIT.YOU NEED A TECH 2 SCANNER TO DO THE JOB.TO GET ABS BRAKES TO BLEED RIGHT BEST TO GET THEM PRESSURE BLEED INSTEAD OF MANUAL BLEEDING GET LESS AIR IN SYSTEM.THAT WHY SEE DEALER SHIP HAS THE THINGS TO DO THE JOB.

SOURCE: abs rear light stays on

The sensor is located I believe on the differential housing,could be faulty or corroded