A code reader for your car can mean the difference between dropping everything and heading for the mechanic and letting that warning light ride a little bit.

Electronic keys introduce new components that can be expensive, even without paying a dealer to program them. If you can do the job yourself, you can save both time and money by not having to visit ...

Check out this guide to ECU tuning for the do-it-yourselfer. Tech article brought to you by Honda Tuning Magazine.

If you bought a new Subaru, you will want to protect it in your garage. The most convenient way is to program its garage door opener. Here's how to do it.

If an ECU detects a problem, it broadcasts it as an alphanumeric code and the Check Engine light is turned on. Modern cars carry out these self-checks any time the car is running.