Isuzu Rodeo brake pedal makes humming noise and activates lights, check 4x4 light also came on on Isuzu Rodeo

Some Isuzu Rodeo owners report experiencing a humming noise from the brake pedal, accompanied by the activation of warning lights such as the brake booster, battery, and 4x4 lights. These issues may indicate a malfunctioning brake booster, which can lead to the brake pedal feeling soft or going to the floor. Additionally, problems with the brake light switch could cause unusual pedal sensations and trigger warning lights. Other potential contributors include worn brake pads, a defective combination valve, or low-quality brake fluid, which can also result in a soft brake pedal and illuminate warning indicators. It is recommended that owners have their vehicle inspected by a qualified mechanic to diagnose and address these brake system concerns promptly to ensure safe operation.