The problem why these aftermarket central lock fail is the installers work, how did it install, in what condition and the time the installer spent on it. There are several ways to do it and defends on what type of car, what kind of central lock(all are not the same in quality) and what kind of installer is working on it, for i have install many of these, there was still a back job, not the way it was installed, it's because the connection being losses as the time goes, if you notice how many times it been triggered in a day, and if you look to the connector, it just fix by hand with a screwdriver, what do you think happen if its like a pistons in the engine..

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The installer need time to install it, if in good condition by the costumer, sometimes the installer perfect the installation and those are not fail for years, for installer like me, i can give lifetime warranty for my work, just for that, not for the motor or the relay fail itself, its like a bulb, no warranty. just for the electrical's and loss connection.
