In March of 2013 I purchased a Honda Odyssey EX-L Minivan from this Honda dealership. While signing the paperwork. I asked if there was an factory alarm system. I was told there was not and they offered me a package for $500. Feeling insecure about my vehicle not having needed protection, I made the decision to purchase the alarm system. Honda installed the new system. 3 yrs later, my alarm system is malfunctioning. Each time the vehicle is locked, the alarm goes off, all day. It is very stressful. I bring the vehicle in to this dealership for them to fix the alarm system. I am told, there is an aftermarket alarm system on the vehicle and they will not service the vehicle. I explain that they are the ones who installed it, but they refuse. I am given a number to call for the product. I call this number, which a voice mail immediately picks up the call. I have left messages with no return phone calls. Being desperate to fix the alarm, I look up in the manual how to disarm it. There is an option, using the Valet mode. However, under the dash, my Valet mode button has been removed. I do some further research, it turns out, there was a factory alarm on the vehicle, and this, and the valet button have been removed for the aftermarket alarm system that is now malfunctioning, that I paid Honda $500 to install, that they won't service. I have been misinformed by this dealership. I specifically inquired about a factory alarm system that they denied the vehicle having, which it did. They installed an alarm system to replace it, which they won't service, and they removed the Valet mode option, and I now cannot disarm a malfunctioning alarm system.