Howdy. yes, its a big problem in my country. WHen I bought the Accord back in November 2021, there weren't many solutions yet. We were told that radar theft was rampant but I was adamant of staying with a honda (since my first car was a 2002 accord). Used car Dealerships were even taking the radars off and only installing them once someone was going to purchase the car.
There is a guy that put in protections for the side mirrors (yes, they steal the mirrors and innards here) said they had only found a solution for the CRV and had found a way to make it more difficult for the Civic (but could still be stolen with enough determination...technically steal the whole bumper if they wanted the radar)). But that the solutions he had tried out for the accord hadn't worked. He told me to write back to him periodically to see if he had found a solution. I messaged him back in January and still nothing. Well, come this past week, 6 months after owning my car, my radar was stolen :/ . Well, I contacted him and he said that yes, he found a solution to help protect the radar.
He sent me a pic of what the finished product looks like. I haven't done it because I'm honestly just gonna roll around without the radar for a month or 2. He is charging around $100 bucks to install it. Its a homebrew solution but it's something.
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Here is the pic. Maybe someone in your area can figure out what he's doing. Once I do decide to get a new radar and then protect it, i can post again and hopefully give more info into what he's doing exactly to help prevent the theft. For now, all I got is that picture. Looks like some metal going around the radar...attached to what? I don't know. How is it protecting it? DOn't know that either. But the guy seemed trustworthy when I spoke to him while he was doing my mirror protections. He said he had done a few things for the radar but it hadn't helped at all and it would still be stolen...so he wasn't charging anyone or doing that job until he found a real solution.
So yeah, there's definitely a way.
BTW, question, I obviously got all those errors like No Lane keep assist, Road mitigation, etc...but I also got an error which scares me a bit. Electronic Power Steering error.
Did yours also get that Electronic Power Steering error because of the stolen radar?