Consumer Protection Act. (Canada)
Any manufacturer or vehicle dealer stating that any aftermarket product installed on your vehicle will void your vehicle’s warranty is a violation of the Consumer protection laws established by the federal, provincial and territorial governments. The manufacturer or vehicle dealer would have to prove in a court of law that the after market product had a direct impact on whatever part or parts that you wanted changed under warranty before they could void the warranty of the vehicle. A properly installed remote starting system can’t have any negative effects on your vehicle.
All the Provinces have a Sale of Goods Act, which are the laws governing contracts for the sale of goods and implied warranties. Certain related warranty provisions may also be contained in other statutes. Such legislation may establish the basis for a private right of action against a merchant. Certain Provinces have also enacted much more extensive consumer warranty legislation. See New Brunswick’s Consumer Product Warranty and Liability Act (S.N.B. 1978, c. C-18.1) and Part III of the Saskatchewan’s Consumer Protection Act (S.S. 1996, c. C-30.1)
Many provinces have Business Practices Acts, to contact representatives in the provinces for more information you can find applicable addresses here:
http://strategis.ic.gc.ca/epic/internet/inoca-bc.nsf/en/ca01506e.html .

You can also consult Industry Canada’s web site for more information here:
http://strategis.ic.gc.ca/epic/internet/inoca-bc.nsf/en/ca01726e.html.