w639 111cdi 2007 what are the sensors under the boost inlet pipe ?

[Durtlocker]

Hi guys having done some more work to my vehicle today i noticed while she was up on the ramp there were two sensors on the high pressure boosted side of the the intercooler within the hard plastic pipe at the bottom of the engine just under the inlet manifold on the nearside of the vehicle ,could any one tell me what these sensors are please ?

 

[Durtlocker]

Here are the sensors on this picture circled n yellow

 

[Supernoodle]

Don't know that engine but if it's a boost pipe all I expect in there iare pressure and temp sensors.
Can't see the detail in the pic, but the one not circled looks like a boost sensor, aka manifold air pressure{MAP). If 3 wires it's just pressure. Some will be 4 or 5 wires and so a includes a temperature making it a TMAP.
If the one you have circled is 2 wires, it's a temperature sensor.
In some literature these may be referred to a charge air pressure and temperature.