First time I sent it they said they could not find a problem with the computer
So I put it back in my vehicle and it still didn't work. They asked me to send it back to them for a 2nd look and was told they did not find anything wrong with the computer. Needless to say it still did not work when I installed it into my vehicle. Bought a brand new computer and it worked immediately. I was out $40 in postage and wasted time. They did refund my $200 though