Do I Need a Bypass Module for Remote Start?

Have you realized that most (if not all) latest vehicles feature remote starting and keyless entry systems? Honestly its looks so cool that most truck owners of previous models are upgrading their engines.

However, at the same time, you don’t need to have a case where your factory security system is completely bypassed and rendered useless. Otherwise, if that’s what a remote start does to a motor vehicle, nobody would want it.

That’s where a bypass module comes in. Actually, it isn’t that complex; let’s break it down to simple terms.

Ever Heard of Transponder Keys?

If you look at most current ignition switch keys, you will notice they feature an encapsulation. The key incorporates a microchip. So it isn’t just a key but an electronic key.

When you insert it to start the engine, the vehicle’s computer system communicates with the electronic key. It does that by comparing the codes stored in its system and that in the microchip.

If the two codes agree, then the engine will start and run smoothly. But if they don’t match, that’s where problems begin. It may refuse to ignite, or ignite and stop thereafter. Such a computerized control system enhances the security of your car.

How does that relate to the Bypass Module?

To remotely start your engine, it means the transponder key is with you and not in the ignition. So it means it can’t communicate with the computer system and compare their “codes.”

So in simple terms, a bypass module when installed assumes the role of the transponder spare key. So when you press the remote start button, the bypass module sends a signal or code to the vehicle’s control system. It is programmed to send the same code as the original transponder key.

Thus the control system is made to assume that the electronic key is in place and allows the smooth starting and running of the engine. Remember, even after igniting the engine, the complex control system still needs to “see” the electronic key in place. The bypass module does the dual role effectively; allowing for both igniting and running of the engine.

But wouldn’t that defeat the Factory Security System?

Now that’s a good concern. The bypass interface will assume the role of the transponder key only when the remote starter is active.

That means once the remote starter goes inactive; the original factory security circuit takes up automatically. So even if a stranger gets hold of your vehicle when the engine runs, he can’t really get away.

The remote starting mechanism soon deactivates, and then your car’s security system takes over automatically.

Besides controlling the starting or running of the engine, the bypass module makes the keyless locking and unlocking of the doors smooth and sure.

So do you need a Bypass Module?

Here is what it all summarizes. If you need the benefit of a remote starter, and keyless entry without compromising the vehicle’s factory security measures, then it is a must. The integration module provides for the smooth operation of the car without hiccups.

Check out the review of the Viper 5706 remote car starter.