I searched for a while on the forum, but I couldn't find anything.
Recently, I've removed my gauge cluster twice to replace the tach and temp gauge needles. Never touched the speedo. (at least I didn't think so.) But I'm reading way slow. The last couple of those radars the cops put on the side of the road said 57 when my speedo said 50. Said 52 when my speedo said 45. Anyway, obviously I'm like 7mph off. With my hondas, I can just pull the needle out while on the road, and stick it back where it should be. How the hell can I do this with our needles!!!??? I don't even know what I could've done to screw it up...
Thanks you guys..
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Did you get new wheels recently? If so then that can change your odom speed.

 

speed sensor?
Sometimes my speedometer needle just flares up
(And mileage goes up on the odometer, even though I'm parked)

 

yeah try replacing you speed sensor it is mounted on top of your tranmission, if that doesnt work then you might have to replace your whole cluster.

 

Thanks for the input. That's crazy! So there's no calibrating a lexus speedo at all? That sucks. How much do spd sensor's run? Anyone that replaced one wanna give me any heads up before I buy and replace??

 

Calibrating...meaning taking the needles off and adjusting them to the correct location?

If that doesn't work then its either the cluster electronics, or something wrong with speed sensor/ outside of the cluster.