Have you ever worked on a car problem that lit the check engine light, only to realize the light hasn’t gone off? Resetting a check engine light can be a complicated issue for a lot of modern vehicle owners. Some years back if this light came on, disconnecting and reconnecting the battery would solve the issue. However, most modern cars today are installed with the OBD 2 system (On-board Diagnostic System). You may still try to reset the light by simply disconnecting the battery, but having the right precautions in mind will assist you a lot in deciding whether or not you should do this.
DETERMINE IF YOUR CAR HAS OBD 2
Most vehicles manufactured after 1996 are fit with OBD 2. Simply disconnecting the battery to induce a reset is not guaranteed that it will work. Try to browse through your car manual to gather as much vital information as you can to know why disconnecting the battery will work or not.
CONSEQUENCES OF DISCONNECTING THE BATTERY
The OBD 2 system needs a constant flow of energy to keep the car memory accessible. If your vehicle is manufactured with an anti-theft system, it is possible that your car will stop functioning completely immediately you disconnect the battery, causing further complications. If you feel you can disconnect the anti-theft system with some help, then you could go through with this.
The radio memory may be lost too and you will have to enter a code to access it again. The code could be a pain to find, too, especially if you got your car secondhand. The original car manual will have the security code, so try to get hold of that before doing anything if you’re considering disconnecting the battery.
Disconnecting the car battery can also make stored onboard memory to be lost. Onboard memory usually saves your driving patterns and other vital information like gear shifting. The car will have to take time again to learn all these patterns again when you reconnect the power.
GET AN AUTOMOTIVE SCANNER INSTEAD
Although disconnecting and reconnecting the battery may work, the best and simplest way to reset your check engine light is to buy an automotive scanner. You can get one cheap at car stores or buy it easily online. Connect the automotive scanner to the vehicle and that’s it. The job is simple. The scanner will clear the check engine light, and as long as the problem has actually been solved it should not come back on again until you have another issue. You will not have to go through the complications that come with disconnecting and reconnecting the battery this way, and in the event that you don’t know what made the light to come on, this device can give you a code to figure it out.