Modern vehicles are equipped with hundreds of sensors constantly reporting feedback about how they are performing back to the main electronic control unit, or more commonly known as the ECU. If a problem occurs, it is reported and logged in the ECU. Most often a warning light will display on the dash to let you know there is a problem, although this is not always the case. If your car is displaying a warning or error it should be looked into as soon as possible.
The good news is you no longer have to take your car to the main dealers to have these faults checked out. Here at Lone Pine, we can do just that for you, we have diagnostic equipment that works on most makes and models.