Q: how hard is it to install a viper remote start system on an 03 c-class benz? also, because i dont have a regular key ignition, and i have the sensor key, does this effect the installation?

A: It's up to you but keep in mind that a Benz is much more complex compared to most other models so if you do have one installed, make sure the installer is very familiar with the electronics of the C-Class. If any damage results from an incorrect installation, it may prove to be difficult and expensive to fix. Since you already asked the same question, I copied my answer...
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