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Originally Posted by OneFlyGuy
Hey I have a 2007 Camry and I think there is something wrong with the speedometer. It seems to be off by 3-5 miles at 30-60MPH and more at higher speeds.
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Borrow a GPS from a friend or neighbor and go for a ride. It isn't unusual for a speedometer to be off a little (usually a percentage which is why you're sensing a larger variation at higher speeds).
DOT allows a 10% error so if yours is less than that you're not likely to get any satisfaction from a dealer.
If the error 'really' is bothersome you might want to check out an electronic speedometer correction device. It's basically a tiny computer that's connected between the speed sensor and speedometer head unit. You set DIP switches to account for whatever % error you have. The result is a speedometer reading that's dead on at all speeds.
Cheers