Back to all

Diagnosing Your Vehicle at Tuffy Bloomington in Bloomington

March 18, 2018

When we Bloomington residents get a car repair bill, we really shouldn't be surprised to find “diagnostic fees” as one of the line items. When we get a computer fixed, there is usually a charge for the time it takes to diagnose the problem. When we go to a medical doctor, most of his fee is for his ability to diagnose what's wrong. It's no different with our vehicles.

Some diagnoses are fairly simple. Brake repairs at Tuffy Bloomington usually require only a visual inspection, for instance. But other problems are much more difficult to diagnose. An intermittent engine problem, for example, takes time and expertise to pinpoint.

Modern vehicles have multiple computers that monitor a variety of sensors throughout the vehicle. When one of those sensors has a reading that is higher or lower than the standard parameters, the computer turns on the Check Engine light. Technicians at a service center such as Tuffy Bloomington in Bloomington can scan the engine's computer for a trouble code. This code tells the technician which reading is too high or too low.

That's where some Bloomington residents get confused. They think that this reading concludes the diagnosis, and they don't understand why the diagnostic fee is as much as it is when all the technician did was to scan the computer. But the truth is the trouble code is only the beginning of the diagnostic procedure.

Remember, the trouble code only tells which reading is out of parameter. It doesn't say what is causing the reading to be too high or too low. Your Tuffy Bloomington service technician still has to find the underlying problem. It's a lot like going to the doctor. He can take your temperature and discover that you have a fever, but that doesn't tell him what is causing your fever.

Automotive diagnostic technology can cut down the time it takes to figure out what's wrong with a vehicle that isn't running right. But it doesn't do away with the need for your friendly and knowledgeable Tuffy Bloomington service technician to make a proper diagnosis. Car care, like medical care, still requires the human touch.

Tuffy Bloomington
1505 East Vernon Avenue
Bloomington, Illinois 61701
309.662.0537

More articles from Tuffy Bloomington

Feeling Powerless (Why Is My Battery Light On?)

September 14, 2025

When one of your vehicles warning lights comes on, the first thing that comes to mind is, Oh, no, whats wrong now? When its the battery light, it means theres something wrong with your vehicles battery or charging system. And because both are important for your vehicle to work properly, its a go... More

Motor Oil?The Synthetic Advantage (Synthetic oil vs Conventional)

September 7, 2025

Youve probably already heard that regular oil changes are extremely important for the health of your vehicles engine. Thats sound advice. But what you might not know is when it comes to motor oil, the real thing may not be the best thing for your engine. There are different types of motor oil: ... More

Easy on the Wheel (Power Steering)

August 31, 2025

Steering a vehicle these days doesn't take much effort, but if you got behind the wheel back before power steering was invented, you'd need to practically have the strength of Hercules to turn the wheel. The first power steering systems widely available changed everything. Chrysler introduced... More