Because small plastic clip has broken off white plastic part.
It's below the gear selector lock button on the automatic transmission cosole shift
On the Ford Explorer , on the end of the automatic transmission gear selector lever ( park , reverse etc ) there is a push button that allows you to turn off the OVERDRIVE feature if you wish
It allows you to manually shift the transmission when the selector is in the L position.
Automatic Transmission
You have probably turned off the overdrive function of the automatic transmission. Look for a small button on the gear selector reachable with your thumb.
That would be the OVERDRIVE selector switch.
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Are you stepping on the brake? On my 2004,you have to push in on the button on the side of the gear shift selector. There is also a small panel adjacent to the selector that can be removed to manually release the selector from the park position. Not sure about the 07
AT button on 1994 Nissan maxima stand for automatic transmission.
though it has a manual push button option... It is a Automatic transmission. You can change between push button manual and Auto.
If you don't want the automatic transmission to shift into overdrive, press the button on the end of the gear selector lever. An indicator light will come on in the bottom right corner of your guage cluster displaying O/D OFF
The button on the end of your automatic transmission gear selector lever " P " " R " etcetera got pushed , push it again and that will allow the overdrive feature and the light will turn off