Disconnect reverse sensor? - 2008 Jeep Commander

This was answered in 2012 by yadayada (Mazda Expert):
"The knock sensor is located under the intake manifold to replace do the following
Disconnect the negative battery cable.
Remove the intake manifold.
Disconnect the sensor connector.
Remove the sensor from the engine block.
Installation is the reverse of the removal procedure"
My 2 cents ... there might be chance to access the sensor from underneath

Disconnect wires and sensors from above (under the hood). Raise car. Disconnect wires and sensors underneath the car. Support the engine and transmission. Loosen or disconnect some motor mounts. Remove the bolts that hold the engine and transmission together. Remove bolts that attach clutch to flywheel. Seperate engine and tranny. Remove clutch. Installation in reverse.

Better directions given if you say what car you're asking about.

OIL PAN
Removal & Installation
1. Disconnect negative battery cable. Remove engine torque strut. Raise and support vehicle. Drain
crankcase. Disconnect oil level sensor electrical connector. Remove oil level sensor and oil filter.
Disconnect front exhaust pipe from manifold. Remove right front wheel and splash shield.
2. Disconnect oil cooler pipes. Disconnect A/C compressor electrical connector. Remove A/C compressor,
and position aside. Disconnect engine mounts from frame.
3. Remove flexplate access cover. Use transmission jack at transaxle to raise engine. Remove oil pan bolts
and oil pan. To install, reverse removal procedure. Install oil level sensor after oil pan is installed. Tighten
retaining bolts to specification. See TORQUE SPECIFICATIONS.

Get the new sensor. Disconnect battery. Find the old sensor near the crankshaft, remove the 2 bolts that hold it in place, disconnect the sensor from the plug. Replacement is the reverse

Well the basic and most simple way to describe your answer which is very basic as well, is 1st disconnect your Neg battery cable from the battery then disconnect the pigtail from the sensor and then remove the sensor replace it with the new sensor and install is reverse of the removal. Of course depending on what sensor your replacing the job will be either easy or difficult depending on its location and access.

The Crankshaft Position Sensor (CKP):
4 CYL - located on the front of the engine, near the flywheel end of the block. remove exhaust manifold, disconnect electrical connector, remove bolt. installation is reverse of removal, no gasket req'd. torque to 62 inch-pounds
6 CYL - located next to crankshaft pulley - remove right wheel, remove lower right splashshield. disconnect electrical connector, remove bolt. installation is reverse of removal, no gasket req'd. torque to 89 inch-pounds

follow the wires back from the sensors and you will find that they go into one connector for the reversing lights,just disconnect(or fit an inline switch) to disable........(why?).

first disconnect the negative wire frim the battery. then look on the front side of transmission about middle ways to locate vehicle speed sensor. disconnect the electrical plug from sensor. remove the retaining bolt and lift the vehicle speed sensor from the transmission. replace in the reverse of removal.

Ambient Sensor (Auto A/C Model)

REMOVAL

1. Open the front hood.
2. Disconnect the ground cable from battery.
3. Disconnect the ambient sensor connector
   1. Remove the ambient sensor from radiator lower panel.
   INSTALLATION
   
   Install in the reverse order of removal.
   

Removal & Installation

1. Disconnect the negative battery cable.
2. Remove the intake manifold.
3. Disconnect the sensor connector.
4. Remove the sensor from the engine block.
5. Installation is the reverse of the removal procedure.
   
   Fig. Knock sensor removal and installation-Mazda 3
   

1. Disconnect the negative battery cable.
2. Remove the intake manifold bracket.
3. Disconnect the sensor connector.
4. Remove the sensor from the engine block using special tool 49H018001 or equivalent.
5. Installation is the reverse of the removal procedure.
   
   GL G