Air Con not cold - Advise required

[Ranju209]

Hi,

I drive a BMW X5 E53. My problem is the vent blows only warm air (depending on the outside temp). When I checked usig the knowledge what i got from reading different posts I found that the Clutch doesn't get engaged. When I unplug the sensor from the high pressure line (i have a 3 wire sensor) the Aux fan starts and as soon as i plug the sensor back it stops. But could never get the clutch engaged. Also what I would like to check now is to find the relay which switchs the clutch on/off and short it as per the video attached. (How To Make AC Ice Cold, Recharge air, and Force the Compressor Clutch to Engage - YouTube ).

Does anyone know where is the relay for the E53 located? And how to get to it. And is it the Final Stage Resistor in a BMW's case that acts as a relay?

Any help is much apprecieated.

Cheers