Could you please tell me where the reset button is at on the Tom Tom model number 4en52z1230

SOURCE: Can you tell me where

I'm a little confused about which unit you have, but the answer is simple enough..... If there isn't a small hole on the bottom of the GPS, then simply hold the on/off button for approximately 15 seconds -- until the unit restarts. The small "hole" that I'm referring to will be in the same vicinity as the connector that the cable plugs into. It should say reset right by it, if the reset button is there. If you do have a reset button on the bottom of the device, you'll need to use something to press the button. A paper clip straightened out a bit works perfectly.

The following lists are from Tom Tom's website. I hope this helps:

Devices that are reset by holding the On/Off button
(GO x50, Blue&Me TomTom, GO x40,
XL IQ Routes, XL,
ONE IQ Routes,
Rider Pro, Urban Rider)

Devices that are reset by pressing a reset button
(GO x30, GO x20, GO x10, GO,
XL IQ Routes ², ONE XL,
ONE 3rd Edition, ONE 2nd Edition, ONE 1st Edition
TOYOTA, ECLIPSE, DAIHATSU, ECLIPSE II,
Toyota Aygo Connect Multimedia,
Start ², Start
RIDER 2nd, RIDER 1st)