The owner's manual warned that the dealer should be contacted before installing two-way radios, CD players, etc. So, I contacted my dealer regarding the installation of a 2-meter amateur radio but they didn't know anything. However, they did contact a regional tech rep at my request and this is what I was told: "I spoke with an individual from the Electrical department at TMS and he stated that besides possible smart key interference, there is confirmed cases where the Ham radio has damaged engine, body, or other ECUs due to EMP type pulses from the radio into the vehicle’s wiring harness. He wasn’t able to give me any specifics concerning the issue, but that is the reason the owner’s manual states “no ham radios”. Anyway, there you go. Talk to you later." First of all, the owner's manual doesn't state "no ham radios." And radio waves can't possibly harm the car's body. And only atomic bombs generate high EMP levels. So, I question the accuracy of just about everything Toyota said regarding the issue. I know that two-way radios are installed in Prius taxi cabs (I saw three of them last Saturday, though I didn't notice if they were v's), so it's obviously possible to intall two-way radios without the car exploding. I originally thought that I'd be given guidance about wire routing so as to keep the radio's wiring away from sensitive air bag sensors, etc. Instead, I was told I can't install my radio at all. So, what happens if a taxi cab, police car, or other two-way radio equiped car pulls up beside me at a traffic light and the driver transmits on their radio? Will my car explode? Will my car suddenly accelerate and crash in a blaze of fire? Afterall, a properly installed two-way radio in my car will not cause much more RF energy in the passenger compartment than would a radio in an adjacent car.