More commonly known as AdBlue, DEF is an additive that mixes with exhaust emissions to neutralize NOx. It is a urea and water solution that you add to a separate tank in the vehicle. This solution is ...

A solid or blinking red light, especially if the vehicle is parked and locked, usually is a normal indicator related to the ...

It’s 2 AM, and there are still 300 miles to the destination when a disturbing yellow warning light suddenly illuminates the ...