![]() ![]() In some vehicles it is mounted in the trunk or under the dash. The powertrain control module is usually mounted under the hood either near the engine or on the firewall. This computer receives signals to start the car remotely, and turns on the various components required to start the engine. Powertrain control module: The powertrain control module is the main control module that controls the functions of the engine and the transmission. In most vehicles, the body control module has the ability to control the lights, the horn, the alarm, the door locks, the windows, the climate control system and most of the other circuits. It is typically located under the dash of most cars and can even be part of the fuse box. It receives any signals from the remote related to door locks or window functions.īody control module: The body control module is what controls the majority of the interior electronics of the vehicle, as well as the alarm. Most of the time it is mounted in the driver door, under the dash or under the rear dash panel near the rear window.ĭoor control module: The door control module or the master window switch is what typically controls the functions of the windows and the door locks. This computer is usually programmed to work solely on the vehicle that it is installed on. It is used to pick up the signal from the remote and send the signal to the proper place from there. Remote receiver: The remote receiver is a control computer that usually has a small antenna on it. This signal can be interrupted due to distance or obstacles that may be in the path of the signal. When you press the button on the remote it sends a signal to the vehicle. In some cases they will be the key for push button ignition vehicles. They may come attached to the key or as a separate piece. Remote control: Remote controls come in all shapes and sizes. The most common components in this system are: The computer then controls the system that involves the desired operation, whether it be the locks, the alarm or any of the other controlled circuits. That signal is picked up by a computer which then deciphers the information that is sent depending on which button you pressed. When you press a button on the remote, it sends out a signal to the car. ![]() ![]() Remote control systems are much the same in most vehicles. Part 1 of 2: How an RF remote works and what components are involved Understanding how this system works can assist you in diagnosing problems, and it can keep you from getting taken advantage of should a problem arise. These conveniences are great, but can be costly to repair should something malfunction. In today’s automotive market, it is now commonplace for all cars to come with some sort of remote keyless entry that allows the owner to control the door locks, the alarm, the trunk, and even other components such as lighting and vehicle starting. If you wanted an alarm system, you would have to purchase that from an aftermarket company. It was not too long ago that you had to use your key to unlock your car doors and trunk, and to start your vehicle. ![]()
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